Yunedia Tools

Clock

A precise clock with digital and analog displays, a world clock and a distraction-free full-screen mode. Everything runs in your browser.

Time Zone Converter

Convert a date and time between time zones around the world, with daylight saving time handled correctly.

Timer

A countdown timer with multiple simultaneous timers. Remaining time is computed from the absolute end time, so it stays accurate in background tabs.

Pomodoro Timer

A Pomodoro timer with configurable focus and break lengths and a session history kept only on your device.

Interval Timer

An interval timer for workouts and study, with configurable work and rest rounds and audible cues.

stopwatch.yunedia.com

Stopwatch

A stopwatch with lap times, fastest and slowest lap highlights, and CSV export. Runs entirely in your browser.

Calendar

A clean monthly calendar with week numbers and holidays awareness, plus quick links to date calculators.

Date Difference Calculator

Calculate the exact number of days, weeks, months and years between two dates.

Business Days Calculator

Count business days between two dates, or add business days to a date. Weekends are excluded and holidays can be toggled.

Age Calculator

Calculate an exact age in years, months and days from a date of birth, plus the day of the week you were born.

schedule.yunedia.com

Schedule Coordinator

Coordinate a meeting time: create an event with candidate times, share the link, and see everyone's availability in one grid. Events expire automatically.

memo.yunedia.com

Memo

A fast memo app with Markdown support, search and automatic saving. Notes never leave your device.

list.yunedia.com

Checklist & ToDo

Checklists, to-dos and shopping lists with progress tracking, stored only on your device.

count.yunedia.com

Counter

Multiple named counters with history, totals and CSV export. Useful for counting anything, anywhere.

QR Code Generator

Generate QR codes for URLs, text, Wi-Fi credentials and contacts. Download as PNG or SVG. Generated locally, nothing is uploaded.

QR Code Scanner

Scan QR codes with your camera or from an image file. Decoded content is shown as text and never auto-opened or sent anywhere.

Character Counter

Count characters, words, lines, sentences and bytes in real time, including a report-length mode used for essays and assignments.

Text Transform Tools

Transform text in your browser: replace, remove whitespace, delete duplicate lines, sort lines and convert case and width.

Text Compare (Diff)

Compare two texts side by side and highlight the differences line by line and character by character.

translate.yunedia.com

On-device Translator

Translate between major languages with on-device OPUS-MT models. Text never leaves your device; the model for a language pair downloads on first use.

paint.yunedia.com

Paint

A simple drawing app with pen, shapes and an eraser. Your drawings stay on your device and can be saved as PNG.

pdf.yunedia.com

PDF Tools

Merge, split, rotate and extract PDF pages, convert PDFs to images and images to PDF. Files are processed locally in your browser and never uploaded.

Image Tools

Resize, rotate, flip, filter and convert images (PNG, JPEG, WebP) with quality control. Processing happens entirely in your browser.

Image OCR

Extract text from images with on-device OCR (English and Japanese). The image never leaves your device; only the OCR engine is downloaded on first use.

Background Remover

Remove the background from a photo with an on-device AI model and download a transparent PNG. The image is processed locally and never uploaded.

Color Picker & Converter

Pick a color and convert between HEX, RGB, HSL and HSV, with a history of your recent colors kept on your device.

Palette Generator

Generate harmonious color palettes (complementary, analogous, triadic, shades and more) from any base color, with CSS export.

Gradient Generator

Design linear and radial CSS gradients with up to four color stops, preview them live and copy the CSS.

Contrast Checker

Check text/background color contrast against WCAG AA and AAA, and automatically adjust a color until it passes.

closet.yunedia.com

Closet Manager

Manage your wardrobe on your device: item photos, categories, seasons and outfit sets. Photos are stored only in your browser.

JSON Formatter & Validator

Format, minify, sort and validate JSON in your browser, with precise parse error reporting. Nothing is sent to a server.

JSON Schema Validator

Validate JSON data against a JSON Schema with Ajv, listing every violation with its path. Runs entirely in your browser.

JSON / CSV / YAML Converter

Convert between JSON, CSV and YAML formats in both directions, entirely in your browser.

URL Encoder / Decoder

URL-encode and decode text with encodeURIComponent or encodeURI semantics, with clear errors for malformed input.

HTML Entities Converter

Encode text as HTML entities (minimal, named or numeric) and decode entities back to text.

JavaScript / CSS Minifier

Minify JavaScript, CSS, HTML and JSON in your browser and see exactly how much space you save.

Excel to HTML

Open an Excel or CSV file and convert a sheet to an HTML table. The file is read locally and never uploaded.

Unicode Converter

Escape and unescape Unicode sequences and inspect every character's code point, UTF-8 bytes and UTF-16 units.

Base64 Encoder / Decoder

Encode and decode Base64 for text (UTF-8 safe) and files, with URL-safe output. Everything runs locally.

UUID Generator

Generate UUID v4 and v7 values in bulk, and validate existing UUIDs to see their version and variant.

Hash Calculator

Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or files with the Web Crypto API. Data never leaves your device.

JWT Decoder

Decode a JSON Web Token to inspect its header and claims. Decoding is not verification: the signature is not checked.

Regex Tester

Test regular expressions with live match highlighting and capture group details, with input limits for safety.

Cron Expression Parser

Parse a cron expression, see each field explained and preview the next run times in your local time zone.

Markdown Preview

Write Markdown and preview the sanitized HTML side by side, then copy the HTML. Runs entirely in your browser.

Mermaid Editor

Write Mermaid diagrams and render them live as SVG, with error messages that point at the problem.

Browser Information

See what your browser reports about itself: user agent, platform, screen, language, time zone and more. Read locally, never sent anywhere.

HTTP Request Checker

Fetch a URL from your browser and inspect the status and headers. Subject to CORS: targets that do not allow cross-origin reads cannot be inspected.

HTML / CSS / React UI Reference

A searchable reference of common HTML elements and CSS properties with short, accurate descriptions in English and Japanese.

speed.yunedia.com

Internet Speed Test

Measure your connection to this site: latency, jitter, download and upload speed. Results are approximate and depend on your route to Cloudflare.

seo.yunedia.com

SEO Tools

Check a page's title, description, Open Graph tags and keyword density from its HTML, plus a search-result preview. Analysis runs locally.

LLM Token Counter

Count tokens with the real BPE tokenizer for OpenAI models (exact), plus clearly labeled estimates for Claude, Gemini and other models.

API Cost Calculator

Estimate LLM API costs from input and output token counts, using a dated price table taken from official pricing pages.

AI Model Comparison

Compare major LLM API models by provider, input/output price and cached-input price, with sources and the date the data was checked.

VRAM Calculator

Estimate the VRAM needed to run an LLM: model weights by quantization plus KV cache for your context length and batch size.

Prompt Diff

Compare two prompts or texts and see word-level and character-level differences highlighted, entirely in your browser.

Image Classification

Classify an image with an on-device vision model (top-5 labels with scores). The image never leaves your device; the model downloads on first use.

Text Summarizer

An extractive summarizer: it scores sentences by word frequency and position, then picks the key ones. No AI model, no upload, works offline.

Speech to Text (On-device)

Transcribe speech from a file or microphone with an on-device Whisper model. Audio never leaves your device; the model downloads on first use.

Text Similarity

Measure how similar two texts are with TF-IDF cosine similarity, Jaccard similarity and edit distance, computed locally.

Semantic Search (On-device)

Search your own documents by meaning with on-device embeddings: paste several texts, ask a question, get them ranked.

Audio Recorder

Record audio from your microphone and save it on your device. Recordings never leave your browser unless you download them.

Text to Speech

Read text aloud with your browser's built-in voices, with speed and pitch control. No text is sent to a server.

Audio Transcription

Transcribe speech from your microphone with the browser's speech recognition where supported. Support varies by browser.

Volume Meter (Relative)

A live microphone level meter in decibels relative to full scale (dBFS). This is not a calibrated sound-pressure (dB SPL) measurement.

Frequency Analyzer

See the frequency spectrum of microphone input or an audio file, with the dominant frequency and nearest musical note.

Tone Generator

Generate tones from 20 Hz to 20 kHz with sine, square, triangle and sawtooth waveforms. Watch your hearing: start quietly.

Metronome

An accurate Web Audio metronome with tempo, beats per bar and subdivision settings. Your settings are remembered.

Sound Effects

Play synthesized sound effects (beeps, chimes, alarms and more) generated live with Web Audio. No audio files needed.

compass.yunedia.com

Compass

A compass using your device's orientation sensor, with degrees and cardinal direction. Phones may need a permission tap and calibration.

measure.yunedia.com

Screen Ruler & Measure

An on-screen ruler you can calibrate with a real card, plus a pixel ruler for measuring anything on the page.

steps.yunedia.com

Step Counter (Estimate)

Count steps with your phone's motion sensor while this page is open. Counting stops when the page closes.

score.yunedia.com

Scoreboard

A scoreboard for games and matches: add players, tap to add points, and keep totals on your device.

vision.yunedia.com

Vision Check (Reference Only)

Reference-only vision checks: a color-vision plate test and a visual acuity chart. These are not a medical diagnosis.

health.yunedia.com

Health Calculators (Adults)

General health calculators for adults: BMI, basal metabolic rate, daily calorie needs and estimated body fat. General information only, not medical advice.

GPA Calculator

Calculate your GPA from course grades and credits, with support for common letter-grade scales. Your entries stay in your browser.

Credit Manager

Track earned and planned credits by category against your graduation requirements. Data is stored only on your device.

LaTeX Equation Editor

Write LaTeX math and see it rendered live with KaTeX. Rendering happens entirely in your browser.

Flashcards

Create flashcard decks and study with flip cards and shuffle. Decks are stored only on your device.

Math Problem Generator

Generate printable-style math problem sets (fractions, equations, quadratics and more) with an answer key.

Arithmetic Practice

Timed arithmetic drills for addition, subtraction, multiplication and division, with score tracking for the session.

Bibliography Generator

Format references in APA, MLA and Chicago styles from book, journal and website details you enter.

DOI Lookup

Look up a DOI in the public Crossref database and get the title, authors, journal and a formatted citation.

Circuit Calculator (Ohm's Law)

Ohm's law, resistor series/parallel, voltage dividers, RC time constants and LED resistor calculations for electronics work.

Statistics Calculator

Descriptive statistics (mean, median, variance, quartiles) and linear regression with correlation, computed in your browser.

Matrix Calculator

Matrix addition, multiplication, transpose, determinant and inverse for matrices up to 5 by 5.

Number Base Converter

Convert integers between bases 2 and 36 with full precision, including values too large for floating point.

Truth Table Generator

Generate a truth table for any propositional formula with AND, OR, NOT, XOR, implication and equivalence.

Set Operations

Compute union, intersection, difference and symmetric difference of two sets, with subset checks.

Probability Calculator

Permutations, combinations, binomial probabilities, normal distribution values and dice-sum distributions.

Function Graph

Plot up to three math functions on one graph with zoom and a value table. Drawn locally on a canvas.

Calculator

A fast everyday calculator with keyboard support and a calculation history.

Scientific Calculator

A scientific calculator with trigonometric, logarithmic, power and constant functions, evaluated locally with decimal precision.

Percentage Calculator

Calculate percentages, percentage change, ratios and proportions with the formula shown for every result.

Discount Calculator

Calculate discounted prices, the discount amount and the effective percentage off, including stacked discounts.

Tax Calculator

Add or remove tax at any rate, with a breakdown of the net price, tax amount and total.

Split Bill Calculator

Split a bill fairly among any number of people, with per-person amounts rounded sensibly and any remainder shown.

Unit Converter

Convert length, weight, temperature, area, volume, speed, time and data units with exact conversion factors.

Compound Interest Calculator

Compound interest with monthly contributions: see the balance grow year by year with a breakdown of principal and interest.

Mortgage Calculator

Mortgage payments and a full amortization schedule, with an option for extra monthly payments. Calculation only, no product recommendations.

FIRE Simulator

Project when your assets could reach your FIRE number (annual spending times 25) from savings and returns. A plain projection, not financial advice.

finance.yunedia.com

Asset Tracker (Manual)

Track your assets manually: accounts and holdings with amounts, totals and allocation. Stored only on your device, no market data.

finance.yunedia.com

Market Reference Charts

Market Reference Charts on Yunedia Tools. Free, no sign-up, and processed locally in your browser whenever possible.

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finance.yunedia.com

Real Estate Open Statistics

Planned: official Japanese real-estate transaction statistics. Not yet available because the official data API requires operator registration.

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Random Number Generator

Generate random integers or decimals in any range using the Web Crypto API, with no-duplicate and sort options.

Dice Roller

Roll up to ten dice with any number of sides and see each die plus the total. Uses cryptographic randomness.

Coin Flip

Flip a coin with a running heads/tails count for the session. Uses cryptographic randomness.

Roulette

Spin a wheel of your own entries to pick one at random. Entries are yours to edit and stay in the browser.

Lunch Picker

Save your lunch candidates and let the wheel of randomness pick today's lunch for you.

Team Splitter

Split a list of names into balanced random teams. Uses cryptographic randomness.

Order Picker

Shuffle a list into a random order for presentations, seating or play order.

Math Game

A 60-second arithmetic challenge: solve as many problems as you can and beat your best score.

Memory Game

The classic card-matching memory game with move and time tracking and difficulty levels.

Puzzle Game

A sliding tile puzzle (3x3 to 5x5) with a move counter. Guaranteed solvable shuffles.

Original Card Game

Play Higher or Lower against the deck: guess whether the next card beats the current one and build a streak.

fortune.yunedia.com

Fortune (Entertainment)

A daily fortune in the omikuji tradition: one draw per day, the same result all day, with lucky color and item.

file.yunedia.com

File Transfer (WebRTC)

Send a file directly between two browsers over WebRTC with a one-time room code. The file never passes through or is stored on a server.

chat.yunedia.com

Invite Chat

A temporary invite-only chat room. No account needed; messages are relayed by the server and deleted when the room expires (24 hours at most).

camera.yunedia.com

Camera Sharing (Time-limited)

Share your camera with a few invited viewers over a time-limited link. Video flows peer-to-peer; the server only introduces the devices.

location.yunedia.com

Location Sharing (Time-limited)

Share your live location with invited viewers over a time-limited link. Location updates flow peer-to-peer; stop any time, and sharing expires automatically.

map.yunedia.com

Map & Saved Places

A map with place search and your saved places. Saved places stay in your browser; search uses OpenStreetMap data.

live.yunedia.com

Live Stream Directory

Live Stream Directory on Yunedia Tools. Free, no sign-up, and processed locally in your browser whenever possible.

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trend.yunedia.com

Trend Information

Trend Information on Yunedia Tools. Free, no sign-up, and processed locally in your browser whenever possible.

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tools.yunedia.com

Workspace

Your personal dashboard on Yunedia Tools: favorite tools, recently used tools, a quick memo and a to-do list, all stored in this browser.

按分類瀏覽

Time & Productivity

時鐘

一款精準的時鐘，支援數位和模擬顯示、世界時鐘以及無干擾的全螢幕模式。全部功能都在您的瀏覽器中運行。

時區轉換器

在全球各個時區之間轉換日期和時間，並正確處理夏令時間。

計時器

一款可同時運行多個計時器的倒數計時工具。剩餘時間根據絕對結束時間計算，因此在背景分頁中也能保持準確。

番茄鐘計時器

一款番茄鐘計時器，可設定專注和休息時長，工作階段歷史僅保存在您的裝置上。

間隔計時器

一款適用於鍛鍊和學習的間隔計時器，可設定工作與休息回合，並有聲音提示。

stopwatch.yunedia.com

碼錶

一款支援分圈計時、最快與最慢圈速醒目標示以及 CSV 匯出的碼錶。全部功能都在瀏覽器中運行。

日曆

一款簡潔的月曆，附有週序號並可顯示節假日，還提供日期計算工具的快速連結。

日期差計算器

計算兩個日期之間確切的天數、週數、月數和年數。

工作日計算器

計算兩個日期之間的工作日數量，或為某個日期加上若干工作日。週末會被排除，節假日可切換是否計入。

年齡計算器

根據出生日期計算確切的年齡（年、月、日），並顯示您出生那天是星期幾。

schedule.yunedia.com

日程協調

協調會議時間：建立帶有候選時間的活動，分享連結，即可在一個表格中查看所有人的空閒情況。活動會自動過期。

memo.yunedia.com

備忘錄

一款快速的備忘錄應用程式，支援 Markdown、搜尋和自動儲存。筆記不會離開您的裝置。

list.yunedia.com

清單與待辦

附有進度追蹤的清單、待辦事項和購物清單，僅保存在您的裝置上。

count.yunedia.com

計數器

多個可命名的計數器，附歷史記錄、總計和 CSV 匯出功能。隨時隨地數任何東西都很方便。

QR & Text

QR 碼產生器

為網址、文字、Wi-Fi 憑證和聯絡人產生 QR 碼。可下載為 PNG 或 SVG。在本地產生，不上傳任何內容。

QR 碼掃描器

使用相機或從圖像檔案掃描 QR 碼。解碼後的內容以文字形式顯示，絕不會自動開啟或傳送到任何地方。

字元計數器

即時統計字元、單詞、行數、句子和位元組數，還包含用於論文和作業的篇幅計算模式。

文字轉換工具

在瀏覽器中轉換文字：取代、去除空白、刪除重複行、行排序，以及大小寫和全形/半形轉換。

文字比較 (Diff)

並排比較兩段文字，並逐行、逐字元地醒目顯示差異。

translate.yunedia.com

裝置端翻譯

使用裝置上的 OPUS-MT 模型在主要語言之間翻譯。文字不會離開您的裝置；語言對模型會在首次使用時下載。

PDF & Image

paint.yunedia.com

畫圖

一款簡單的繪畫應用程式，帶有畫筆、形狀和橡皮擦。你的作品只保存在你的裝置上，並可儲存為 PNG。

pdf.yunedia.com

PDF 工具

合併、拆分、旋轉和擷取 PDF 頁面，將 PDF 轉換為圖片、將圖片轉換為 PDF。檔案在瀏覽器中本地處理，絕不傳。

圖片工具

調整大小、旋轉、翻轉、濾鏡處理和轉換圖片（PNG、JPEG、WebP），並可控制品質。處理完全在你的瀏覽器中進行。

圖片 OCR

使用裝置端 OCR 從圖片中擷取文字（支援英語和日語）。圖片絕不離開你的裝置；僅在首次使用時下載 OCR 引擎。

背景移除

使用裝置端 AI 模型去除照片背景，並下載透明 PNG。圖片在本地處理，絕不傳。

取色器與顏色轉換

選擇顏色並在 HEX、RGB、HSL 和 HSV 之間轉換，最近使用的顏色歷史記錄保存在你的裝置上。

調色板產生器

從任意基礎色產生和諧的配色方案（互補色、類似色、三色配色、明暗色調等），並可匯出為 CSS。

漸層產生器

設計最多四個色標的線性和放射狀 CSS 漸層，即時預覽並複製 CSS。

對比度檢查器

根據 WCAG AA 和 AAA 標準檢查文字與背景顏色的對比度，並自動調整顏色直到達標。

closet.yunedia.com

衣櫥管理

在你的裝置上管理衣櫥：單品照片、分類、季節和穿搭套裝。照片僅儲存在你的瀏覽器中。

Developer Tools

JSON 格式化與驗證

在瀏覽器中格式化、壓縮、排序和驗證 JSON，並精確報告解析錯誤。任何資料都不會傳送到伺服器。

JSON Schema 驗證器

使用 Ajv 根據 JSON Schema 驗證 JSON 資料，並列出每一處違規及其路徑。完全在你的瀏覽器中運行。

JSON / CSV / YAML 轉換器

在 JSON、CSV 和 YAML 格式之間雙向轉換，完全在你的瀏覽器中進行。

URL 編碼 / 解碼

使用 encodeURIComponent 或 encodeURI 語義對文字進行 URL 編碼和解碼，對格式錯誤的輸入給出清晰的錯誤提示。

HTML 實體轉換器

將文字編碼為 HTML 實體（最簡、命名或數字形式），並將實體解碼回文字。

JavaScript / CSS 壓縮工具

在瀏覽器中壓縮 JavaScript、CSS、HTML 和 JSON，並精確查看節省了多少空間。

Excel 轉 HTML

開啟 Excel 或 CSV 檔案，將工作表轉換為 HTML 表格。檔案在本地讀取，絕不傳。

Unicode 轉換器

對 Unicode 序列進行轉義和反轉義，並檢查每個字元的碼點、UTF-8 位元組和 UTF-16 單元。

Base64 編碼 / 解碼

對文字（UTF-8 安全）和檔案進行 Base64 編碼和解碼，並支援 URL 安全輸出。所有處理都在本地進行。

UUID 產生器

批量產生 UUID v4 和 v7 值，並驗證現有 UUID 以查看其版本和變體。

雜湊計算器

使用 Web Crypto API 計算文字或檔案的 SHA-1、SHA-256、SHA-384 和 SHA-512 雜湊。資料絕不離開你的裝置。

JWT 解碼器

解碼 JSON Web Token 以查看其標頭和宣告。解碼不等於驗證：不會檢查簽章。

正規表示式測試器

測試正規表示式，即時醒目顯示符合並顯示擷取群組詳情，出於安全考量設有輸入限制。

Cron 運算式解析器

解析 cron 運算式，查看每個欄位的說明，並按你的本地時區預覽接下來的執行時間。

Markdown 預覽

撰寫 Markdown 並並排預覽經過清理的 HTML，然後複製 HTML。完全在你的瀏覽器中運行。

Mermaid 編輯器

撰寫 Mermaid 圖表並即時轉譯為 SVG，錯誤訊息會指出問題所在。

瀏覽器資訊

查看瀏覽器報告的自身資訊：使用者代理、平台、螢幕、語言、時區等。在本地讀取，絕不傳送到任何地方。

HTTP 請求檢查器

從你的瀏覽器擷取 URL 並檢查狀態和標頭。受 CORS 限制：不允許跨來源讀取的目標無法檢查。

HTML / CSS / React UI 參考

可搜尋的常見 HTML 元素和 CSS 屬性參考，附有簡短準確的英語和日語說明。

speed.yunedia.com

網速測試

測量你與本站的連線：延遲、抖動、下載和上傳速度。結果為近似值，取決於你到 Cloudflare 的路由。

seo.yunedia.com

SEO 工具

從頁面的 HTML 檢查其標題、描述、Open Graph 標籤和關鍵字密度，並提供搜尋結果預覽。分析在本地運行。

AI Tools

LLM Token 計數器

使用真實的 BPE 分詞器為 OpenAI 模型精確計算 token，並為 Claude、Gemini 等其他模型提供明確標示的估算值。

API 成本計算器

根據輸入和輸出 token 數量估算 LLM API 成本，價格表取自官方定價頁面並標註日期。

AI 模型比較

按提供商、輸入/輸出價格和快取輸入價格比較主流 LLM API 模型，並附來源和資料核查日期。

VRAM 計算器

估算運行 LLM 所需的 VRAM：按量化方式計算的模型權重，加上與您的上下文長度和批次大小對應的 KV 快取。

提示詞差異比較

比較兩個提示詞或文本，以醒目顯示單詞級和字元級的差異，全部在您的瀏覽器中完成。

圖像分類

使用裝置端視覺模型對圖像進行分類（前 5 個標籤及分數）。圖像不會離開您的裝置；模型在首次使用時下載。

文本摘要

抽取式摘要工具：根據詞頻和位置為句子評分，然後挑選關鍵句。無需 AI 模型，無需上傳，可離線使用。

語音轉文字（裝置端）

使用裝置端 Whisper 模型將檔案或麥克風中的語音轉成文字。音訊不會離開您的裝置；模型在首次使用時下載。

文本相似度

使用 TF-IDF 餘弦相似度、Jaccard 相似度和編輯距離衡量兩個文本的相似程度，全部在本地計算。

語義搜尋（裝置端）

使用裝置端嵌入按語義搜尋您自己的文件：貼上多段文本，提出問題，即可獲得排序結果。

Audio & Sensors

錄音機

透過麥克風錄製音訊並儲存到您的裝置。除非您主動下載，錄音不會離開您的瀏覽器。

文字轉語音

使用瀏覽器內置語音朗讀文本，可調節語速和音調。文本不會傳送到任何伺服器。

音訊轉錄

在受支援的瀏覽器中，使用瀏覽器語音辨識將麥克風語音轉成文字。支援情況因瀏覽器而異。

音量計（相對值）

以相對於滿量程的分貝（dBFS）顯示的即時麥克風電平計。這不是經過校準的聲壓（dB SPL）測量。

頻率分析儀

查看麥克風輸入或音訊檔案的頻譜，並顯示主導頻率和最接近的音名。

音調產生器

產生 20 Hz 至 20 kHz 的音調，可選正弦波、方波、三角波和鋸齒波。注意保護聽力：請從小音量開始。

節拍器

一款精確的 Web Audio 節拍器，可設定速度、每小節拍數和細分。您的設定會被記住。

音效

播放使用 Web Audio 即時產生的合成音效（蜂鳴、鈴聲、警報等）。無需音訊檔案。

compass.yunedia.com

指南針

使用裝置方向感測器的指南針，顯示度數和基本方位。手機上可能需要點按授權並進行校準。

measure.yunedia.com

螢幕標尺與測量

可使用真實卡片校準的螢幕標尺，外加一把可測量頁面上任意物件的像素標尺。

steps.yunedia.com

計步器（估算）

在此頁面開啟期間，使用手機的運動感測器計步。關閉頁面後停止計數。

score.yunedia.com

計分牌

適用於遊戲和比賽的計分牌：新增玩家，點按加分，總分儲存在您的裝置上。

vision.yunedia.com

視力檢查（僅供參考）

僅供參考的視力檢查：色覺檢查圖測試和視力表。這些不是醫學診斷。

health.yunedia.com

健康計算器（成人）

面向成人的通用健康計算器：BMI、基礎代謝率、每日熱量需求和估算體脂。僅提供一般資訊，不是醫療建議。

Study & Science

GPA 計算器

根據課程成績和學分計算 GPA，支援常見的字母等級評分標準。您輸入的內容只保存在瀏覽器中。

學分管理

按類別對照畢業要求追蹤已修和計劃修讀的學分。資料僅保存在您的裝置上。

LaTeX 公式編輯器

撰寫 LaTeX 數學公式，並使用 KaTeX 即時渲染。渲染完全在瀏覽器中進行。

記憶卡片

建立記憶卡片組，透過翻卡和洗牌進行學習。卡片組僅保存在您的裝置上。

數學題產生器

產生可列印的數學題集（分數、方程式、二次函數等），並附帶答案。

四則運算練習

加、減、乘、除的計時運算練習，並記錄本次練習的得分。

參考文獻產生器

根據您輸入的書籍、期刊和網站資訊，產生 APA、MLA 和芝加哥格式的參考文獻。

DOI 查詢

在公開的 Crossref 資料庫中查詢 DOI，取得標題、作者、期刊以及格式化後的引文。

電路計算器（歐姆定律）

歐姆定律、電阻串並聯、分壓器、RC 時間常數和 LED 電阻計算，適用於電子製作。

統計計算器

在瀏覽器中計算描述統計（平均值、中位數、變異數、四分位數）以及帶相關性的線性迴歸。

矩陣計算器

計算最高 5×5 矩陣的加法、乘法、轉置、行列式和逆矩陣。

進制轉換器

在 2 到 36 進制之間以完整精度轉換整數，包括超出浮點數範圍的大數值。

真值表產生器

為包含 AND、OR、NOT、XOR、蘊含和等價的任意命題公式產生真值表。

集合運算

計算兩個集合的聯集、交集、差集和對稱差，並可檢查子集關係。

機率計算器

排列、組合、二項機率、常態分布數值以及骰子點數和的分布。

函數圖像

在一張圖上繪製最多三個數學函數，支援縮放並附帶數值表。在本地畫布上繪製。

Finance & Calculators

計算機

一款快速的日常計算機，支援鍵盤輸入並附有計算歷史。

科學計算機

一款科學計算機，具備三角函數、對數、冪和常數函數，在本地以十進位精度計算。

百分比計算器

計算百分比、百分比變化、比率和比例，並為每個結果顯示計算公式。

折扣計算器

計算折後價格、折扣金額和實際折扣百分比，包括疊加折扣。

稅額計算器

按任意稅率加上或去除稅款，並顯示淨價、稅額和總計的明細。

分帳計算器

將帳單在任意人數之間公平分攤，每人金額會合理取整，餘額也會顯示出來。

單位換算器

使用精確的換算係數轉換長度、重量、溫度、面積、體積、速度、時間和資料單位。

複利計算器

附每月定投的複利計算：逐年查看餘額增長，並顯示本金和利息的明細。

房貸計算器

房貸月供和完整的分期還款表，並可選擇每月額外還款。僅供計算，不推薦任何產品。

FIRE 模擬器

根據儲蓄和回報，推算您的資產何時能達到 FIRE 數字（年支出乘以 25）。這只是簡單的推算，不是財務建議。

finance.yunedia.com

資產追蹤（手動）

手動追蹤您的資產：記錄帳戶和持倉的金額、總計和配置比例。僅保存在您的裝置上，不使用市場資料。

finance.yunedia.com

Market Reference Charts

Market Reference Charts on Yunedia Tools. Free, no sign-up, and processed locally in your browser whenever possible.

未開始

finance.yunedia.com

Real Estate Open Statistics

Planned: official Japanese real-estate transaction statistics. Not yet available because the official data API requires operator registration.

未開始

Random & Entertainment

隨機數產生器

使用 Web Crypto API 在任意範圍內產生隨機整數或小數，提供不重複和排序選項。

擲骰子

擲最多十個任意面數的骰子，查看每個骰子的點數和總和。使用密碼學隨機數。

拋硬幣

拋硬幣並累計本次工作階段的正反面次數。使用密碼學隨機數。

輪盤抽選

轉動裝有您自填選項的輪盤，隨機選出一個。選項可由您編輯，並保存在瀏覽器中。

午餐抽選

保存您的午餐候選，讓隨機輪盤替您決定今天的午餐。

分組工具

將名單隨機分成均衡的隊伍。使用密碼學隨機數。

順序抽選

將列表隨機打亂，用於決定演講順序、座位或遊戲順序。

數學遊戲

60 秒運算挑戰：盡可能多地解題，刷新您的最佳成績。

記憶遊戲

經典的卡片配對記憶遊戲，帶步數和用時記錄以及難度等級。

拼圖遊戲

帶步數計數器的滑塊拼圖（3x3 到 5x5）。打亂後的布局保證可解。