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.

按分类浏览

Time & Productivity

时钟

一款精准的时钟，支持数字和模拟显示、世界时钟以及无干扰的全屏模式。全部功能都在您的浏览器中运行。

时区转换器

在全球各个时区之间转换日期和时间，并正确处理夏令时。

计时器

一款可同时运行多个计时器的倒计时工具。剩余时间根据绝对结束时间计算，因此在后台标签页中也能保持准确。

番茄钟计时器

一款番茄钟计时器，可设置专注和休息时长，会话历史仅保存在您的设备上。

间隔计时器

一款适用于锻炼和学习的间隔计时器，可设置工作与休息轮次，并有声音提示。

stopwatch.yunedia.com

秒表

一款支持分圈计时、最快与最慢圈速高亮以及 CSV 导出的秒表。全部功能都在浏览器中运行。

日历

一款简洁的月历，带有周序号并可显示节假日，还提供日期计算工具的快捷链接。

日期差计算器

计算两个日期之间确切的天数、周数、月数和年数。

工作日计算器

计算两个日期之间的工作日数量，或为某个日期加上若干工作日。周末会被排除，节假日可切换是否计入。

年龄计算器

根据出生日期计算确切的年龄（年、月、日），并显示您出生那天是星期几。

schedule.yunedia.com

日程协调

协调会议时间：创建带有候选时间的活动，分享链接，即可在一个表格中查看所有人的空闲情况。活动会自动过期。

memo.yunedia.com

备忘录

一款快速的备忘录应用，支持 Markdown、搜索和自动保存。笔记不会离开您的设备。

list.yunedia.com

清单与待办

带有进度跟踪的清单、待办事项和购物清单，仅保存在您的设备上。

count.yunedia.com

计数器

多个可命名的计数器，带历史记录、总计和 CSV 导出功能。随时随地数任何东西都很方便。

QR & Text

二维码生成器

为网址、文本、Wi-Fi 凭据和联系人生成二维码。可下载为 PNG 或 SVG。在本地生成，不上传任何内容。

二维码扫描器

使用相机或从图像文件扫描二维码。解码后的内容以文本形式显示，绝不会自动打开或发送到任何地方。

字符计数器

实时统计字符、单词、行数、句子和字节数，还包含用于论文和作业的篇幅计算模式。

文本转换工具

在浏览器中转换文本：替换、去除空白、删除重复行、行排序，以及大小写和全角/半角转换。

文本比较 (Diff)

并排比较两段文本，并逐行、逐字符地高亮显示差异。

translate.yunedia.com

设备端翻译

使用设备上的 OPUS-MT 模型在主要语言之间翻译。文本不会离开您的设备；语言对模型会在首次使用时下载。

PDF & Image

paint.yunedia.com

画图

一款简单的绘画应用，带有画笔、形状和橡皮擦。你的作品只保存在你的设备上，并可保存为 PNG。

pdf.yunedia.com

PDF 工具

合并、拆分、旋转和提取 PDF 页面，将 PDF 转换为图片、将图片转换为 PDF。文件在浏览器中本地处理，绝不上传。

图片工具

调整大小、旋转、翻转、滤镜处理和转换图片（PNG、JPEG、WebP），并可控制质量。处理完全在你的浏览器中进行。

图片 OCR

使用设备端 OCR 从图片中提取文字（支持英语和日语）。图片绝不离开你的设备；仅在首次使用时下载 OCR 引擎。

背景移除

使用设备端 AI 模型去除照片背景，并下载透明 PNG。图片在本地处理，绝不上传。

取色器与颜色转换

选择颜色并在 HEX、RGB、HSL 和 HSV 之间转换，最近使用的颜色历史记录保存在你的设备上。

调色板生成器

从任意基础色生成和谐的配色方案（互补色、类似色、三色配色、明暗色调等），并可导出为 CSS。

渐变生成器

设计最多四个色标的线性和径向 CSS 渐变，实时预览并复制 CSS。

对比度检查器

根据 WCAG AA 和 AAA 标准检查文字与背景颜色的对比度，并自动调整颜色直到达标。

closet.yunedia.com

衣橱管理

在你的设备上管理衣橱：单品照片、分类、季节和穿搭套装。照片仅存储在你的浏览器中。

Developer Tools

JSON 格式化与验证

在浏览器中格式化、压缩、排序和验证 JSON，并精确报告解析错误。任何数据都不会发送到服务器。

JSON Schema 验证器

使用 Ajv 根据 JSON Schema 验证 JSON 数据，并列出每一处违规及其路径。完全在你的浏览器中运行。

JSON / CSV / YAML 转换器

在 JSON、CSV 和 YAML 格式之间双向转换，完全在你的浏览器中进行。

URL 编码 / 解码

使用 encodeURIComponent 或 encodeURI 语义对文本进行 URL 编码和解码，对格式错误的输入给出清晰的错误提示。

HTML 实体转换器

将文本编码为 HTML 实体（最简、命名或数字形式），并将实体解码回文本。

JavaScript / CSS 压缩工具

在浏览器中压缩 JavaScript、CSS、HTML 和 JSON，并精确查看节省了多少空间。

Excel 转 HTML

打开 Excel 或 CSV 文件，将工作表转换为 HTML 表格。文件在本地读取，绝不上传。

Unicode 转换器

对 Unicode 序列进行转义和反转义，并检查每个字符的代码点、UTF-8 字节和 UTF-16 单元。

Base64 编码 / 解码

对文本（UTF-8 安全）和文件进行 Base64 编码和解码，并支持 URL 安全输出。所有处理都在本地进行。

UUID 生成器

批量生成 UUID v4 和 v7 值，并验证现有 UUID 以查看其版本和变体。

哈希计算器

使用 Web Crypto API 计算文本或文件的 SHA-1、SHA-256、SHA-384 和 SHA-512 哈希。数据绝不离开你的设备。

JWT 解码器

解码 JSON Web Token 以查看其标头和声明。解码不等于验证：不会检查签名。

正则表达式测试器

测试正则表达式，实时高亮匹配并显示捕获组详情，出于安全考虑设有输入限制。

Cron 表达式解析器

解析 cron 表达式，查看每个字段的说明，并按你的本地时区预览接下来的运行时间。

Markdown 预览

编写 Markdown 并并排预览经过清理的 HTML，然后复制 HTML。完全在你的浏览器中运行。

Mermaid 编辑器

编写 Mermaid 图表并实时渲染为 SVG，错误消息会指出问题所在。

浏览器信息

查看浏览器报告的自身信息：用户代理、平台、屏幕、语言、时区等。在本地读取，绝不发送到任何地方。

HTTP 请求检查器

从你的浏览器获取 URL 并检查状态和响应头。受 CORS 限制：不允许跨源读取的目标无法检查。

HTML / CSS / React UI 参考

可搜索的常见 HTML 元素和 CSS 属性参考，附有简短准确的英语和日语说明。

speed.yunedia.com

网速测试

测量你与本站的连接：延迟、抖动、下载和上传速度。结果为近似值，取决于你到 Cloudflare 的路由。

seo.yunedia.com

SEO 工具

从页面的 HTML 检查其标题、描述、Open Graph 标签和关键词密度，并提供搜索结果预览。分析在本地运行。

AI Tools

LLM Token 计数器

使用真实的 BPE 分词器为 OpenAI 模型精确计算 token，并为 Claude、Gemini 等其他模型提供明确标注的估算值。

API 成本计算器

根据输入和输出 token 数量估算 LLM API 成本，价格表取自官方定价页面并标注日期。

AI 模型对比

按提供商、输入/输出价格和缓存输入价格对比主流 LLM API 模型，并附来源和数据核查日期。

VRAM 计算器

估算运行 LLM 所需的 VRAM：按量化方式计算的模型权重，加上与您的上下文长度和批大小对应的 KV 缓存。

提示词差异对比

对比两个提示词或文本，以高亮显示单词级和字符级的差异，全部在您的浏览器中完成。

图像分类

使用设备端视觉模型对图像进行分类（前 5 个标签及分数）。图像不会离开您的设备；模型在首次使用时下载。

文本摘要

抽取式摘要工具：根据词频和位置为句子评分，然后挑选关键句。无需 AI 模型，无需上传，可离线使用。

语音转文字（设备端）

使用设备端 Whisper 模型将文件或麦克风中的语音转成文字。音频不会离开您的设备；模型在首次使用时下载。

文本相似度

使用 TF-IDF 余弦相似度、Jaccard 相似度和编辑距离衡量两个文本的相似程度，全部在本地计算。

语义搜索（设备端）

使用设备端嵌入按语义搜索您自己的文档：粘贴多段文本，提出问题，即可获得排序结果。

Audio & Sensors

录音机

通过麦克风录制音频并保存到您的设备。除非您主动下载，录音不会离开您的浏览器。

文字转语音

使用浏览器内置语音朗读文本，可调节语速和音调。文本不会发送到任何服务器。

音频转录

在受支持的浏览器中，使用浏览器语音识别将麦克风语音转成文字。支持情况因浏览器而异。

音量计（相对值）

以相对于满量程的分贝（dBFS）显示的实时麦克风电平计。这不是经过校准的声压（dB SPL）测量。

频率分析仪

查看麦克风输入或音频文件的频谱，并显示主导频率和最接近的音名。

音调发生器

生成 20 Hz 至 20 kHz 的音调，可选正弦波、方波、三角波和锯齿波。注意保护听力：请从小音量开始。

节拍器

一款精确的 Web Audio 节拍器，可设置速度、每小节拍数和细分。您的设置会被记住。

音效

播放使用 Web Audio 实时生成的合成音效（蜂鸣、铃声、警报等）。无需音频文件。

compass.yunedia.com

指南针

使用设备方向传感器的指南针，显示度数和基本方位。手机上可能需要点按授权并进行校准。

measure.yunedia.com

屏幕标尺与测量

可使用真实卡片校准的屏幕标尺，外加一把可测量页面上任意对象的像素标尺。

steps.yunedia.com

计步器（估算）

在此页面打开期间，使用手机的运动传感器计步。关闭页面后停止计数。

score.yunedia.com

记分牌

适用于游戏和比赛的记分牌：添加玩家，点按加分，总分保存在您的设备上。

vision.yunedia.com

视力检查（仅供参考）

仅供参考的视力检查：色觉检查图测试和视力表。这些不是医学诊断。

health.yunedia.com

健康计算器（成人）

面向成人的通用健康计算器：BMI、基础代谢率、每日热量需求和估算体脂。仅提供一般信息，不是医疗建议。

Study & Science

GPA 计算器

根据课程成绩和学分计算 GPA，支持常见的字母等级评分标准。您输入的内容只保存在浏览器中。

学分管理

按类别对照毕业要求跟踪已修和计划修读的学分。数据仅保存在您的设备上。

LaTeX 公式编辑器

编写 LaTeX 数学公式，并使用 KaTeX 实时渲染。渲染完全在浏览器中进行。

记忆卡片

创建记忆卡片组，通过翻卡和洗牌进行学习。卡片组仅保存在您的设备上。

数学题生成器

生成可打印的数学题集（分数、方程、二次函数等），并附带答案。

四则运算练习

加、减、乘、除的计时运算练习，并记录本次练习的得分。

参考文献生成器

根据您输入的书籍、期刊和网站信息，生成 APA、MLA 和芝加哥格式的参考文献。

DOI 查询

在公开的 Crossref 数据库中查询 DOI，获取标题、作者、期刊以及格式化后的引文。

电路计算器（欧姆定律）

欧姆定律、电阻串并联、分压器、RC 时间常数和 LED 电阻计算，适用于电子制作。

统计计算器

在浏览器中计算描述统计（平均值、中位数、方差、四分位数）以及带相关性的线性回归。

矩阵计算器

计算最高 5×5 矩阵的加法、乘法、转置、行列式和逆矩阵。

进制转换器

在 2 到 36 进制之间以完整精度转换整数，包括超出浮点数范围的大数值。

真值表生成器

为包含 AND、OR、NOT、XOR、蕴含和等价的任意命题公式生成真值表。

集合运算

计算两个集合的并集、交集、差集和对称差，并可检查子集关系。

概率计算器

排列、组合、二项概率、正态分布数值以及骰子点数和的分布。

函数图像

在一张图上绘制最多三个数学函数，支持缩放并附带数值表。在本地画布上绘制。

Finance & Calculators

计算器

一款快速的日常计算器，支持键盘输入并带有计算历史。

科学计算器

一款科学计算器，具备三角函数、对数、幂和常数函数，在本地以十进制精度计算。

百分比计算器

计算百分比、百分比变化、比率和比例，并为每个结果显示计算公式。

折扣计算器

计算折后价格、折扣金额和实际折扣百分比，包括叠加折扣。

税额计算器

按任意税率加上或去除税款，并显示净价、税额和总计的明细。

分账计算器

将账单在任意人数之间公平分摊，每人金额会合理取整，余数也会显示出来。

单位换算器

使用精确的换算系数转换长度、重量、温度、面积、体积、速度、时间和数据单位。

复利计算器

带每月定投的复利计算：逐年查看余额增长，并显示本金和利息的明细。

房贷计算器

房贷月供和完整的分期还款表，并可选择每月额外还款。仅供计算，不推荐任何产品。

FIRE 模拟器

根据储蓄和回报，推算您的资产何时能达到 FIRE 数字（年支出乘以 25）。这只是简单的推算，不是财务建议。

finance.yunedia.com

资产跟踪（手动）

手动跟踪您的资产：记录账户和持仓的金额、总计和配置比例。仅保存在您的设备上，不使用市场数据。

finance.yunedia.com

Market Reference Charts

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

未开始

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.

未开始

Random & Entertainment

随机数生成器

使用 Web Crypto API 在任意范围内生成随机整数或小数，提供不重复和排序选项。

掷骰子

掷最多十个任意面数的骰子，查看每个骰子的点数和总和。使用密码学随机数。

抛硬币

抛硬币并累计本次会话的正反面次数。使用密码学随机数。

轮盘抽选

转动装有您自填选项的轮盘，随机选出一个。选项可由您编辑，并保存在浏览器中。

午餐抽选

保存您的午餐候选，让随机轮盘替您决定今天的午餐。

分组工具

将名单随机分成人数均衡的队伍。使用密码学随机数。

顺序抽选

将列表随机打乱，用于决定演讲顺序、座位或游戏顺序。

数学游戏

60 秒运算挑战：尽可能多地解题，刷新您的最佳成绩。

记忆游戏

经典的卡片配对记忆游戏，带步数和用时记录以及难度等级。

拼图游戏

带步数计数器的滑块拼图（3x3 到 5x5）。打乱后的布局保证可解。