🎮 趣味工具Fun & Games
幸运大转盘Spin the Wheel (Random Picker)
自定义选项的在线幸运转盘：抽奖、吃什么、谁请客，一转决定。Custom spinning wheel to pick a random option — raffles, what to eat, who pays.
随机点名/抽奖器Random Name Picker
粘贴名单，随机抽取一个或多个名字，不重复，适合课堂点名、年会抽奖。Paste a list and randomly draw one or more names without repeats — for classes and raffles.
打字速度测试Typing Speed Test
在线测试打字速度（WPM/每分钟字数）和准确率，支持中英文。Test your typing speed (WPM / characters per minute) and accuracy, English or Chinese.
反应速度测试Reaction Time Test
测试你的反应速度：屏幕变绿时尽快点击，统计平均反应时间（毫秒）。Test your reaction time: click as soon as the box turns green; get your average in ms.
手速测试（CPS）Click Speed Test (CPS)
测试你每秒能点击多少次鼠标（CPS），可选 5/10/30 秒。How many clicks per second can you do? 5, 10 or 30-second CPS test.
随机分组器Random Team Generator
把名单随机分成若干组，可按组数或每组人数分组，适合活动、课堂和比赛。Randomly split a list of names into teams — by number of teams or team size.
彩票号码随机生成Lottery Number Generator
随机生成双色球、大乐透、Powerball、Mega Millions、欧洲百万号码，或自定义规则。仅供娱乐。Random numbers for lotteries (双色球, 大乐透, Powerball, Mega Millions, EuroMillions) or custom rules. For fun.
在线计数器Online Tally Counter
在线点击计数器，支持多个计数项、加减、键盘快捷键，自动保存。Online click/tally counter with multiple counters, +/−, keyboard shortcuts and auto-save.
在线钢琴Online Piano
在浏览器中弹钢琴：鼠标点击、触屏或电脑键盘（Z 行 + S 行为低八度，Q 行 + 数字行为高八度，共 24 键）演奏两个八度，支持多种音色。Play a two-octave piano in your browser with mouse, touch or computer keyboard (Z row + S row = lower octave, Q row + number row = upper octave, all 24 keys), several tones.
在线节拍器Online Metronome
可调速度（20–300 BPM）、拍号和重音的在线节拍器，带视觉节拍指示和点击测速（Tap Tempo）。Online metronome with adjustable tempo (20–300 BPM), time signature and accent, visual beat indicator and tap tempo.
在线音频发生器（频率声音）Online Tone Generator
生成指定频率（1–20000 Hz）的正弦波、方波、三角波、锯齿波声音，可用于调音、测试耳机和听力。Generate a tone at any frequency (1–20000 Hz) with sine, square, triangle or sawtooth waves — for tuning and audio tests.
白噪音生成器（助眠/专注）White Noise Generator
在线播放白噪音、粉红噪音、棕色噪音，帮助睡眠、专注和屏蔽环境噪声，可设定时关闭。Play white, pink or brown noise for sleep, focus and masking background sound, with a sleep timer.
井字棋（人机对战）Tic-Tac-Toe vs Computer
经典井字棋：与电脑（简单/不可战胜）或好友对战，记录胜负比分。Classic tic-tac-toe against the computer (easy or unbeatable) or a friend, with a scoreboard.
2048 小游戏2048 Game
经典 2048 数字合并游戏：用方向键或手机滑动合并相同数字，挑战 2048，自动保存最高分。The classic 2048 puzzle: slide with arrow keys or swipes to merge tiles and reach 2048; best score saved.
在线画板Online Drawing Board
简单好用的在线画板：画笔、橡皮擦、颜色、粗细、撤销、清空，支持触屏，可下载 PNG。A simple online drawing board with brush, eraser, colors, sizes, undo and clear; touch-friendly, save as PNG.
屏幕坏点检测Dead Pixel Test
全屏显示纯红、绿、蓝、白、黑等颜色，帮助检测显示器和手机屏幕的坏点、亮点和漏光。Show full-screen solid colors (red, green, blue, white, black…) to spot dead or stuck pixels and backlight bleed.
世界各国首都查询World Capitals
世界 195 个国家（193 个联合国会员国及梵蒂冈、巴勒斯坦）的首都查询对照表：国家、首都、所属洲，可搜索中英文名称。Look up the capitals of all 195 countries (193 UN members plus Vatican City and Palestine), searchable in Chinese and English.
世界各国货币查询World Currencies
世界各国货币名称、ISO 代码和符号对照表（非实时汇率），可搜索复制。Reference of world currency names, ISO codes and symbols (not live rates), searchable.
在线时钟（全屏大字）Fullscreen Clock
大字号在线时钟，可全屏显示，支持 12/24 小时制、显示秒和日期，适合直播、倒数和会议计时。A big online clock you can make fullscreen, with 12/24-hour mode, seconds and date — good for streams, meetings and countdowns.
迷宫生成器Maze Generator
在线生成随机迷宫：可设行列数（最大 150×150）、格子大小和颜色，支持深度优先（长通道）和 Prim 算法（多分岔），可显示答案路径，下载 PNG / SVG 或打印。Generate random mazes up to 150×150 with custom cell size and colors, using depth-first (long corridors) or Prim's algorithm (many branches); show the solution, download PNG/SVG or print.
爱情配对计算器Love Calculator
输入两个名字，得到一个固定的“缘分指数”（0–100%）和一句趣味评语。纯属娱乐：分数由名字的哈希值算出，同样的两个名字永远得到同样的结果，与真实感情无关。Enter two names to get a fixed "love score" (0–100%) and a playful comment. Just for fun: the score comes from a hash of the names, so the same pair always gets the same result — it says nothing about real relationships.
魔术数字计算器（棒球等联赛的封王/淘汰数字）Magic Number Calculator (Clinching and Elimination Numbers)
用标准公式“魔术数字 = 赛季总场数 + 1 − 领先队胜场 − 追赶队败场”计算领先球队还需要多少场（自己赢球或对手输球的合计）才能确保排名领先；也可以用剩余场数和胜场差的简化方法。同时给出追赶队的淘汰数字。本地处理。Use the standard formula magic number = games in the season + 1 − leader wins − chaser losses to see how many combined leader wins and chaser losses clinch the lead, or the simpler method from games left and the lead in wins. The chasing team elimination number is shown too. Processed locally.
筒灯计算器（数量、间距布局、流明法）Recessed Lighting Calculator (Number, Spacing Layout, Lumen Method)
三种方法估算筒灯：按每盏覆盖面积；按层高的经验间距（间距 ≈ 层高 ÷ 2，离墙为间距的一半）排出行列布局；或用流明法（所需照度 lux × 面积 ÷ 每盏流明 × 利用系数）。支持米和英尺。本地处理。Three ways to plan recessed lights: by coverage per light; by the ceiling-height spacing rule (spacing ≈ ceiling height ÷ 2, half a spacing from the walls) laid out in rows and columns; or by the lumen method (target lux × area ÷ lumens per light × utilisation factor). Metres or feet. Processed locally.
房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet)
计算房间的地面面积、周长、墙面面积和体积。支持矩形、L 形（大矩形减去缺角）、圆形，或把多个矩形区域相加；单位可选米或英尺，并同时换算成 m²、ft²、坪和平方码。可加损耗率估算地板材料用量。本地处理。Works out floor area, perimeter, wall area and volume for a room: rectangle, L-shape (a rectangle minus a cut-out corner), circle, or several rectangles added together, in metres or feet, with the area also in m², ft², ping and square yards. Add a waste allowance to estimate flooring. Processed locally.
屏幕尺寸计算器（宽高、面积、PPI、两块屏对比）Screen Size Calculator (Width, Height, Area, PPI, Compare Two Screens)
由对角线尺寸和宽高比（16:9、21:9、4:3 等）求屏幕的宽、高和面积（英寸和厘米），输入分辨率可求像素密度 PPI 和点距；还可以和第二块屏幕比较面积大小，看换屏后显示面积变化多少。本地处理。From the diagonal and aspect ratio (16:9, 21:9, 4:3 and so on) get the screen width, height and area in inches and centimetres; add a resolution for pixel density (PPI) and dot pitch; and compare with a second screen to see how much the viewing area changes. Processed locally.
咖啡粉水比Coffee Ratio
按粉:水比例算水量或粉量。本地处理。可设置「已知」、「粉量 g」、「水量 g/mL」、「比例 1:N」。Water or grounds from a coffee:water ratio. Processed locally. Settings: Given, Grounds g, Water g/mL, Ratio 1:N.
钻石重量示意（克拉）Diamond Weight (demo, carats)
示意：克拉 ≈ 长×宽×深×形状系数（尺寸 mm；圆形系数常见约 0.0061，已含换算，无需再 ÷1000）。本地处理。Demo: carats ≈ L×W×D×shape factor (mm; round factor often ~0.0061 already includes the usual scale — do not also divide by 1000). Processed locally.
披萨小费Pizza Tip Calculator
小费 = 账单 × 比例%；人均分摊。本地处理。可设置「账单」、「小费 %」、「人数」。Tip = bill × percent; split per person. Processed locally. Settings: Bill, Tip %, People.
空气炸锅温度时间示意Air Fryer Convert (demo)
烤箱温度约减 20°C（结果不低于 120°C），时间约 ×0.8（示意）。本地处理。可设置「烤箱 °C」、「烤箱分钟」。Oven temp ≈ −20°C (floored at 120°C), time ×0.8 for air fryer (demo). Processed locally. Settings: Oven °C, Oven minutes.
板球打击得分率Batting Strike Rate (cricket)
打击率 = 得分 / 球数 × 100。本地处理。可设置「得分」、「球数」。Strike rate = runs / balls × 100. Processed locally. Settings: Runs, Balls.
圣诞树灯泡估算Christmas Tree Lights
灯泡约数 ≈ 树高(英尺) × 每英尺建议盏数。本地处理。可设置「树高 英尺」、「每英尺盏数」。Approx lights ≈ height(ft) × lights per foot. Processed locally. Settings: Height ft, Lights per foot.
狗狗预期寿命（按体型）Dog Life Expectancy Calculator
按成年体重分档给出典型寿命区间（示意统计），并估算剩余年数。本地处理。可设置「成年体重 kg」、「现在年龄（岁）」。Typical lifespan range by adult weight class (rough statistics) and estimated years remaining. Processed locally. Settings: Adult weight kg, Current age (years).
有效投篮命中率 eFG%Effective Field Goal % (eFG%)
eFG% = (FG + 0.5 × 3P) / FGA，三分球按 1.5 个两分计。本地处理。可设置「命中数 FG」、「三分命中 3P」、「出手数 FGA」。eFG% = (FG + 0.5 × 3P) / FGA, weighting threes as 1.5 twos. Processed locally. Settings: Field goals made FG, Threes made 3P, Field goal attempts FGA.
FIP 投手独立防御率FIP Calculator (Fielding Independent Pitching)
FIP = (13×HR + 3×(BB + HBP) - 2×K) / IP + 常数（默认 3.10）。局数可写成 6.1 / 6.2 表示 6⅓ / 6⅔ 局。本地处理。FIP = (13×HR + 3×(BB + HBP) - 2×K) / IP + constant (default 3.10). Innings like 6.1 / 6.2 mean 6⅓ / 6⅔. Processed locally.
柠檬水摊利润Lemonade Stand Calculator
按售价、每杯成本、固定成本和卖出杯数计算收入、成本、利润与保本杯数。本地处理。可设置「卖出杯数」、「每杯售价」、「每杯成本」、「固定成本（摊位、器具）」。Revenue, costs, profit and break-even cups from price, cost per cup, fixed costs and cups sold. Processed locally. Settings: Cups sold, Price per cup, Cost per cup, Fixed costs (stand, supplies).
滑雪板长度Ski Size Calculator
按身高和水平估算双板长度：初学者约身高 - 15 cm，中级约 - 5 cm，高级约与身高相同；体重偏重或喜欢粉雪可加长。仅供参考。本地处理。Estimate ski length from height and ability: beginners about height - 15 cm, intermediates - 5 cm, advanced about head height; go longer if heavier or for powder. A guide only. Processed locally.
酸面包烘焙百分比Sourdough Calculator
按面粉量和烘焙百分比算出水、酵头和盐的用量；考虑酵头本身的含水率，给出整体实际含水率。本地处理。Water, starter and salt from the flour weight and baker's percentages, accounting for the starter's own hydration to give the true overall hydration. Processed locally.
火鸡烤制时间Turkey Cooking Time Calculator
按 163 °C（325 °F）烤箱估算：不填馅约每磅 13 分钟，填馅约每磅 15 分钟；并估算冷藏解冻天数（约每 4 磅 1 天）。以中心温度 74 °C（165 °F）为准。本地处理。At a 163 °C (325 °F) oven: about 13 min per lb unstuffed, 15 min per lb stuffed; fridge thawing takes about 1 day per 4 lb. Always check for 74 °C (165 °F) inside. Processed locally.
婚礼酒水用量Wedding Alcohol Calculator
按宾客人数、时长和每人每小时饮用量估算总杯数，再按葡萄酒、啤酒、烈酒的比例换算成瓶数（葡萄酒 750 mL ≈ 5 杯，烈酒 750 mL ≈ 16 杯）。本地处理。Total drinks from guests, hours and drinks per guest per hour, split into wine, beer and spirits bottles (750 mL wine ≈ 5 glasses, 750 mL spirits ≈ 16 drinks). Processed locally.
生肖配对（趣味）Chinese Zodiac Compatibility (Fun)
选择两个生肖，得到一个固定的趣味合盘分数与评语。分数由生肖名哈希得出，仅供娱乐。Pick two Chinese zodiac animals for a fixed fun compatibility score and blurb. Hashed from the names — for entertainment only.
星座配对（趣味）Star-Sign Compatibility (Fun)
选择两个西洋星座，得到固定的趣味合盘分数与元素关系说明。仅供娱乐。Pick two Western star signs for a fixed fun score and element note. Entertainment only.
每日星座运势（趣味）Daily Star-Sign Fortune (Fun)
选择星座与日期，生成该日固定的趣味运势短评（爱情 / 事业 / 健康指数）。由星座+日期哈希决定，仅供娱乐。Pick a sign and date for a fixed fun daily blurb (love / work / health scores). Hashed from sign+date — entertainment only.
本周生肖运势（趣味）Weekly Chinese Zodiac Fortune (Fun)
选择生肖与任一周内日期，生成该周（周一至周日）固定的趣味运势短评。仅供娱乐。Pick a Chinese zodiac and any date in a week for a fixed fun weekly blurb (Mon–Sun week). Entertainment only.
星座性格速览Star-Sign Traits Overview
选择星座，查看元素、守护意象与三条常见性格关键词（流行说法，仅供娱乐）。Pick a star sign for element, motif and three popular trait keywords (pop astrology — for fun).
MBTI 十六型速查MBTI Sixteen Types Explorer
选择一种 MBTI 类型，查看四维字母含义与常见昵称（非官方、非诊断，仅供自我探索娱乐）。Pick an MBTI type for letter meanings and a common nickname (unofficial, not a diagnosis — for self-exploration fun).
MBTI 简测（12 题，非官方）Short MBTI-Style Quiz (12 Q, Unofficial)
用 12 道二选一趣味题估一个四字母类型。非心理测验、非官方 MBTI，结果仅供娱乐。Twelve forced-choice fun items to sketch a four-letter type. Not a psychological test or official MBTI — for entertainment only.
MBTI 配对（趣味）MBTI Compatibility (Fun)
选择两种 MBTI 类型，得到固定的趣味合拍指数与维度异同说明。仅供娱乐。Pick two MBTI types for a fixed fun chemistry score and letter same/differ notes. Entertainment only.
你画我猜题目生成器（含计时器）Pictionary Word Generator (with timer)
你画我猜出题神器：90 个中英双语题目分简单、中等、困难三档（具体物品 → 动作与场景 → 抽象概念），一局之内不会重复抽到同一个词；自带 30–120 秒倒计时和“遮住题目”按钮，方便在手机或投屏上直接主持游戏。A Pictionary host in your browser: 90 bilingual prompts in three levels — easy (simple objects), medium (actions and scenes) and hard (abstract ideas) — never repeating within a game, plus a 30–120 second round timer and a Hide button so you can run the game from a phone or a shared screen.
假名生成器Fake Name Generator
按地区风格随机生成姓名（本地词表，非真实身份）。本地处理。可设置「风格」、「数量」。Generate random names by locale style (local word lists, not real IDs). Processed locally. Settings: Style, Count.
评价模板生成Testimonials
用真实客户的姓名、角色与原话排版评价文案。本地处理。可设置「姓名」、「角色」。Format a real customer testimonial from their name, role and quote. Processed locally. Settings: Name, Role.
狗笼尺寸计算器（长 + 高，标准笼型）Dog Crate Size Calculator (length, height, standard sizes)
按常用量法——鼻尖到尾根的体长加 2–4 英寸（5–10 cm），坐姿时地面到头顶（或立耳尖）的高度加 2–4 英寸——算出狗笼最小内部尺寸，并推荐 18–54 英寸的标准笼型。支持 cm / 英寸。本地处理。Uses the common method — nose-to-tail-base length plus 2–4 in (5–10 cm), and floor-to-top-of-head (or ear tips) height while sitting plus 2–4 in — to find the minimum inside crate size, and recommends a standard 18–54 in crate. Works in cm or inches. Processed locally.
书桌高度计算器（坐姿、站姿、椅子与显示器）Desk Height Calculator (Sitting, Standing, Chair & Monitor)
按身高粗略估算坐姿书桌（键盘）高度、站立书桌高度、椅面高度和显示器顶部高度，支持 cm 和英寸。按平均人体比例估算，实际以坐下后手肘约成 90° 为准微调。本地处理。Estimate the sitting desk (keyboard) height, standing desk height, chair seat height and monitor top height from your height, in cm or inches. Based on average body proportions; fine-tune so your elbows rest at about 90°. Processed locally.
火鸡大小计算器（份量、解冻与烤制时间）Turkey Size Calculator (Size, Thawing & Roasting Time)
按用餐人数和火鸡种类估算需要买多大的火鸡（磅和公斤），并给出冷藏解冻天数、冷水解冻时间和 325 °F（163 °C）烤制时间。份量和时间参考美国农业部（USDA）的建议。本地处理。Estimate how big a turkey to buy (in pounds and kilograms) from the number of guests and the kind of turkey, with fridge-thawing days, cold-water thawing time and roasting time at 325 °F (163 °C). Portions and times follow USDA guidance. Processed locally.
圆裙裁剪计算器（整圆、半圆、四分之一圆）Circle Skirt Calculator (Full, Half & Quarter Circle)
按腰围、裙长和缝份算圆裙的腰线半径和外半径，支持整圆、半圆和四分之一圆裙，并给出需要的布料尺寸，提示布幅够不够。支持厘米和英寸。本地处理。Work out the waist radius and outer radius of a full, half or quarter circle skirt from the waist, skirt length and allowances, with the fabric size needed and a check against the fabric width. In cm or inches. Processed locally.
拉距计算器（臂展法，英寸与厘米）Draw Length Calculator (Wingspan Method, Inches & cm)
用射箭常用的臂展法估算拉距：拉距 ≈ 臂展 ÷ 2.5，支持英寸和厘米，并给出建议的箭长范围。只是起点，最好在弓店实际测量。本地处理。Estimate your archery draw length with the common wingspan method, draw length ≈ wingspan ÷ 2.5, in inches or cm, with a suggested arrow length range. It is a starting point; a pro shop measurement is best. Processed locally.
下界传送门坐标计算器（Minecraft）Nether Portal Calculator (Minecraft)
把 Minecraft 主世界坐标换成下界坐标（X、Z 除以 8），或反过来乘以 8；给出游戏实际使用的方块坐标（向下取整），Y 保持不变并提示下界高度范围，帮助两边的传送门正确连接。本地处理。Convert Minecraft Overworld coordinates to the Nether (X and Z divided by 8) or back (multiplied by 8), with the block coordinates the game actually uses (rounded down). Y stays the same, with a reminder of the Nether height range, so your portals link up. Processed locally.
箭速计算器（由 IBO 速度估算实际箭速和动能）Arrow Speed Calculator (Real Speed & Kinetic Energy from IBO)
用常见的经验规则，从复合弓的 IBO 额定速度、拉距、拉力、箭重和弦上附加物重量估算实际箭速，并给出动能（ft·lb、J）、动量和适合的狩猎等级参考。也可以直接由箭速和箭重算动能。本地处理。Estimate the real speed of an arrow from a compound bow IBO rating, draw length, draw weight, arrow weight and extra weight on the string with the usual rules of thumb, then get kinetic energy (ft·lb and J), momentum and a rough hunting guide. You can also go straight from a measured speed and arrow weight. Processed locally.
百叶窗/卷帘尺寸计算器（内装/外装）Blind Size Calculator (Inside or Outside Mount)
输入窗洞上、中、下三处宽度和左、中、右三处高度，按内装或外装给出应订购的宽度和高度：内装取最窄、最短的尺寸（并可扣除厂家余量），外装在每边加覆盖量。支持厘米和英寸。本地处理。Enter the recess width at the top, middle and bottom and the height at the left, centre and right, and get the width and drop to order for an inside or outside mount: inside uses the narrowest and shortest measurement (minus any maker deduction), outside adds an overlap on each side. Works in centimetres or inches. Processed locally.
扣篮计算器（摸高、弹跳、离扣篮还差多少）Dunk Calculator (Reach, Vertical Jump, How Close You Are)
输入身高、站立摸高（不知道可按身高估算）和垂直弹跳，算出最高摸高，与篮圈高度比较：能否摸到篮圈、能否扣篮，以及还差多少厘米或英寸的弹跳。支持标准 3.05 米（10 英尺）或自定义篮圈高度。本地处理。Enter your height, standing reach (or estimate it from height) and vertical jump to get your maximum touch height and compare it with the rim: whether you can touch it, whether you can dunk, and how much more jump you need. Uses the standard 3.05 m (10 ft) rim or a custom height. Processed locally.
布料用量计算器（按裁片排版或面积，米/码）Fabric Calculator (by Pattern Pieces or Area, Metres or Yards)
两种算法：按裁片尺寸和数量，在给定幅宽上逐行排版（可选是否允许旋转、对花余量），算出需要的布长；或按所需面积除以幅宽估算。结果加上损耗，并换算成米、厘米和码。本地处理。Two ways: lay out pattern pieces of a given size and count across the fabric width row by row (optionally allowing rotation and adding a pattern-repeat allowance) to get the length needed, or estimate from the area divided by the width. Waste is added and the result is shown in metres, centimetres and yards. Processed locally.
忘记密码求助文案与找回清单Forgot Password Help Message & Recovery Checklist
填写服务名称和账号（邮箱或用户名），生成可直接复制的找回密码求助文案（发给客服或管理员），并给出一份找回步骤清单和账号安全建议。本页不会发送邮件，也不会收集或保存任何信息。本地处理。Enter the service name and your account (email or username) to get a ready-to-copy password help message for support or an administrator, a step-by-step recovery checklist and account security tips. This page sends no email and collects or stores nothing. Processed locally.