🎲 随机生成Random Generators

UUID 生成器UUID Generator

在线批量生成 UUID v4（GUID），可选大写、去掉连字符或加花括号 {}。Generate random UUID v4 / GUIDs in bulk, with uppercase, no-hyphen or {} brace options.

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随机密码生成器Password Generator

在线生成高强度随机密码，可设置长度、大小写、数字、符号，排除易混淆字符。Generate strong random passwords with custom length and character sets.

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随机数生成器Random Number Generator

在线生成指定范围内的随机整数，可批量生成、不重复，适合抽奖和抽签。Generate random integers in a range, in bulk, with optional no-repeat — great for draws.

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抛硬币 / 掷骰子Coin Flip & Dice Roller

在线抛硬币、掷骰子，支持多个骰子和自定义面数（D4–D100）。Flip a coin or roll dice online — multiple dice, D4 to D100.

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随机字符串生成器Random String Generator

生成指定长度和字符集的随机字符串，可用于 API 密钥、Token、测试数据。Generate random strings with custom length and character sets — API keys, tokens, test data.

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随机日期生成器Random Date Generator

在指定日期范围内随机生成日期（可含时间），可批量生成并排序。Generate random dates (optionally with times) within a range, in bulk.

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数字序列生成器Number Sequence Generator

按起始值、结束值和步长生成数字序列（等差/等比），可加前后缀和补零，批量编号必备。Generate arithmetic/geometric number sequences with prefix/suffix and zero-padding.

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密码短语生成器Passphrase Generator

用随机英文单词生成易记又安全的密码短语（类似 Diceware），可设单词数、分隔符、大写和数字，显示熵值。Generate memorable, strong passphrases from random words (Diceware-style) with entropy shown.

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随机姓名生成器Random Name Generator

随机生成中文姓名或英文姓名，可批量生成，适合测试数据、小说角色和游戏昵称。Generate random Chinese or English names in bulk — for test data, characters and nicknames.

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测试数据生成器（假数据）Fake Test Data Generator

批量生成假的测试数据：姓名、邮箱、手机号、城市、日期、UUID、金额，导出 JSON、CSV 或 SQL。Generate fake test data — names, emails, phones, cities, dates, UUIDs, amounts — as JSON, CSV or SQL.

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随机字母生成器Random Letter Generator

随机生成英文字母（大写/小写/混合），可设数量、是否重复，适合游戏和教学。Random letters (upper, lower or mixed) with count and no-repeat options — for games and teaching.

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随机 IP 地址生成器Random IP Address Generator

随机生成 IPv4 或 IPv6 地址，可选公网/内网，批量生成测试数据。Generate random IPv4 or IPv6 addresses (public or private) in bulk for testing.

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随机抽扑克牌Random Playing Card Draw

从一副标准 52 张扑克牌（可含大小王）中随机抽牌，不放回，可洗牌重来。Draw random cards from a standard 52-card deck (jokers optional) without replacement; reshuffle anytime.

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Yes or No 随机决定器Yes or No Oracle

纠结的时候让它帮你决定：随机给出“是”或“否”（可加“也许”），公平随机。Can't decide? Get a fair random Yes or No (optionally Maybe).

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随机 Emoji 生成器Random Emoji Generator

随机生成表情符号，可按类别（表情、动物、食物、运动、交通、自然）选择，一键复制。Random emojis by category — faces, animals, food, sports, travel, nature — copy with one click.

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随机 MAC 地址生成器Random MAC Address Generator

批量生成随机 MAC 地址：可选冒号/短横线/点号格式、大小写、本地管理（LAA）单播地址或指定厂商前缀（OUI），使用加密级随机数。Generate random MAC addresses in bulk — colon, hyphen or dot format, upper/lower case, locally administered unicast or a fixed vendor prefix (OUI) — using cryptographic randomness.

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随机时间生成器Random Time Generator

在指定时间段内随机生成时刻：可跨午夜（如 22:00–02:00），可选 24 / 12 小时制、是否含秒、排序和不重复，均匀分布、加密级随机。Generate random times within a range — including ranges across midnight (22:00–02:00) — in 24- or 12-hour format, with optional seconds, sorting and no repeats; uniform and cryptographically random.

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随机小数生成器Random Decimal Number Generator

在指定范围内生成随机小数：可设小数位数（0–15）、数量、是否不重复和排序，按十进制精确计算、两端都包含、分布均匀，使用加密级随机数。Generate random decimal numbers in a range with 0–15 decimal places, a count, optional no-repeats and sorting — exact decimal maths, endpoints included, uniform and cryptographically random.

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随机国家生成器Random Country Generator

随机抽取国家或地区：可选只抽联合国 193 个会员国或全部 250 个国家和地区，按大洲筛选，显示国旗、中英文名称、首都和 ISO 代码，支持一次抽多个、不重复。Pick random countries: choose from the 193 UN member states or all 250 countries and territories, filter by continent, and see the flag, name, capital and ISO code — several at once, with no repeats.

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随机字节生成器Random Bytes Generator

用浏览器的加密级随机数生成任意数量的随机字节，输出为十六进制、Base64、二进制、十进制数组或 C/Python 字节数组，也可下载为 .bin 文件，用于密钥、盐值、测试数据。Generate any number of cryptographically secure random bytes as hex, Base64, binary, a decimal array or a C/Python byte array — or download a .bin file — for keys, salts and test data.

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随机质数生成器Random Prime Generator

在指定范围内随机生成质数（最大到 2^53），可一次生成多个、去重、排序；大数用确定性 Miller–Rabin 检验，结果严格是质数且均匀分布。Generate random prime numbers in any range up to 2^53 — several at once, unique and sorted if you like. Large numbers use a deterministic Miller–Rabin test, so every result is truly prime and uniformly chosen.

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随机分数生成器Random Fraction Generator

批量生成随机分数，可设分母范围、真分数/假分数/带分数、是否约分、是否含负数，输出为 a/b、带分数或 LaTeX 格式，适合出数学练习题。Generate random fractions in bulk with a denominator range, proper/improper/mixed form, simplified or not, and optional negatives — output as a/b, mixed numbers or LaTeX for maths worksheets.

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随机句子生成器（中英对照）Random Sentence Generator

随机生成语法正确、有趣的句子，可选陈述句、疑问句和否定句，中英文一一对应。适合写作热身、英语造句练习、打字练习和测试数据。Generate random, grammatically correct and often silly sentences — statements, questions or negatives — each with a matching Chinese version. Good for writing warm-ups, English practice, typing drills and test data.

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随机物品生成器（画画/猜词题目）Random Object Generator

从 110 种常见物品中随机抽取（家居、厨房、文具、自然、工具、玩具、服饰），中英文名称对照，可按类别筛选、一次抽多个，适合画画灵感、你画我猜、写作题目和英语单词练习。Draw random everyday objects from 110 items (household, kitchen, office, nature, tools, toys, clothes) with English and Chinese names — filter by category and pick several at once. Great for drawing prompts, Pictionary, writing ideas and vocabulary practice.

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随机位图生成器（噪点图）Random Bitmap Generator

生成指定尺寸的随机像素图：黑白噪点、灰度噪点或彩色噪点，可调黑色比例和像素放大倍数，下载为 PNG 或 24 位 BMP。用于测试图片、纹理、二维码干扰背景和压缩实验。Make random pixel images of any size — black-and-white, greyscale or colour noise — with an adjustable black ratio and pixel scale, downloadable as PNG or 24-bit BMP. Useful for test images, textures and compression experiments.

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随机名词生成器（中英对照，含复数）Random Noun Generator (with plurals)

从 140 个常用英文名词中随机抽取，分为动物、食物、人物与职业、地点、物品与交通、自然与天气、抽象概念 7 类，每个都有中文意思和英文复数形式（不可数名词会注明）。可按类别和首字母筛选，适合造句练习、单词游戏、写作灵感和课堂活动。Draw random English nouns from 140 common words in 7 categories — animals, food, people and jobs, places, things and transport, nature and weather, abstract ideas — each with its Chinese meaning and English plural (uncountable nouns are marked). Filter by category or first letter. Good for sentence practice, word games, writing prompts and classroom activities.

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随机形容词生成器（含比较级/最高级）Random Adjective Generator (with comparatives)

从 105 个常用英文形容词中随机抽取，分为情绪感受、性格品质、外观、大小形状、颜色、味道与质地、声音时间与速度 7 类，附中文意思和比较级、最高级（如 big → bigger → biggest、beautiful → more beautiful）。可按类别和首字母筛选，适合写作描写、造句、英语语法练习和起名灵感。Draw random English adjectives from 105 common words in 7 categories — feelings, personality, appearance, size and shape, colour, taste and texture, sound, time and speed — with the Chinese meaning plus comparative and superlative forms (big → bigger → biggest, beautiful → more beautiful). Filter by category or first letter. Good for descriptive writing, sentence building, grammar practice and naming ideas.

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随机月份生成器Random Month Generator

从一年 12 个月中随机抽取一个或多个月份，可限定起止月份（支持跨年，如 11 月到次年 2 月），可选择不重复；每个结果显示月份序号、天数、季度和南/北半球的季节。适合抽签排期、课堂游戏、随机活动主题和测试数据。Pick one or more random months, optionally limited to a range (which can wrap round the year, e.g. November to February), with or without repeats. Each result shows the month number, days, quarter and the season in the northern or southern hemisphere. Handy for scheduling draws, classroom games, themed events and test data.

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随机生日生成器（指定年龄范围）Random Birthday Generator (by age range)

按年龄范围随机生成生日：例如生成 10 个 18–65 岁的人的出生日期，并显示每个人的年龄、出生星期、星座和距下一次生日的天数；还会统计这些生日里有没有同月同日，并给出“生日悖论”概率。适合测试数据、表单填写演示、课堂概率实验和角色设定。Generate random birthdays for people in an age range — say 10 people aged 18 to 65 — with each person's age, day of the week they were born, star sign and days until their next birthday. It also flags shared birthdays (same month and day) and gives the birthday-paradox probability. Useful for test data, form demos, probability lessons and character backstories.

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随机电话号码生成器（虚构号码，不会打到真人）Random Phone Number Generator (safe fictional numbers)

生成不会打扰真人的虚构电话号码：只使用电信监管机构专门保留给影视、小说和演示用途的号段——美国/加拿大 555-0100 至 555-0199（NANPA）、英国 Ofcom 戏剧专用号码（手机 07700 900xxx、伦敦 020 7946 0xxx 等）、澳大利亚 ACMA 虚构号码。可选号码类型、本地或国际格式（+1 / +44 / +61）。适合测试数据、UI 演示、剧本和小说。Generate phone numbers that won't ring a real person: only the ranges regulators reserve for films, fiction and demos are used — US/Canada 555-0100 to 555-0199 (NANPA), UK Ofcom drama numbers (mobile 07700 900xxx, London 020 7946 0xxx and more) and Australia's ACMA fictional numbers. Choose the number type and national or international (+1 / +44 / +61) format. Ideal for test data, UI mock-ups, scripts and novels.

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随机段落生成器（中英对照真实句子）Random Paragraph Generator

随机生成由完整、语法正确的英文句子组成的段落（非拉丁假文），可设置段落数、每段句数、是否显示中文对照。适合排版占位、写作与打字练习、测试多段文本的显示效果。与“随机句子生成器”“Lorem Ipsum”不同：这里是成段的真实英文句子并带中文翻译。Generate paragraphs made of complete, grammatically correct English sentences (not Latin filler) — choose how many paragraphs, sentences per paragraph, and whether to show a Chinese translation. Good for layout placeholders, writing and typing practice, and testing multi-paragraph display. Unlike the Random Sentence Generator and Lorem Ipsum, this produces real English sentences in paragraphs with a Chinese translation.

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随机端口号生成器Random Port Generator

随机生成 TCP/UDP 端口号，可选范围：全部 1–65535、仅动态/临时端口（49152–65535，适合避开占用）、注册端口（1024–49151）或自定义范围；可一次生成多个且不重复，并标出常见服务占用的知名端口。适合开发、测试、Docker 端口分配和脚本。Generate random TCP/UDP port numbers in a chosen range — all 1–65535, dynamic/ephemeral only (49152–65535, good for avoiding clashes), registered (1024–49151) or a custom range — several at once without repeats, flagging well-known ports used by common services. Handy for development, testing, Docker port mapping and scripts.

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随机行抽取器（从文本中随机抽行）Random Line Picker

从粘贴的多行文本中随机抽取若干行：可去除空行、抽取时不重复、保持原文顺序或按抽取顺序显示。适合从名单、题库、清单里随机选取，或做抽样。数据在本地处理。Pick random lines from pasted multi-line text — optionally drop blank lines, pick without repeats, and show the picks in their original order or in draw order. Great for choosing at random from a roster, question bank or list, or for sampling. Processed locally.

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随机性检验（序列是否随机）Randomness Test (Is This Sequence Random?)

检验一串数据看起来是否随机：比特串（0/1）按 NIST SP 800-22 做频数、游程、块内最长游程检验；整数序列（如掷骰子、抽号结果）做均匀分布 χ²、平均值、升降游程和相邻相关检验；文本、十六进制、Base64 字符串（如密钥、令牌）计算熵和字符分布。给出每项 p 值和总体结论，全部在浏览器本地计算。Check whether a sequence looks random. Bit strings (0/1) get the NIST SP 800-22 frequency, runs and longest-run-in-a-block tests; integer sequences (dice rolls, lottery draws) get uniformity χ², mean, runs up and down and serial correlation; text, hex and Base64 strings (keys, tokens) get entropy and character-distribution tests. Each test shows its p-value and there is an overall verdict. Everything is computed locally in your browser.

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生成随机字母Generate Random Alphabet Letters

生成随机英文字母串（可设大小写、长度、种子）。本地处理。可设置「长度」、「大小写」、「种子（留空 = 安全随机）」。Generate random English letters (case, length, seed). Processed locally. Settings: Length, Case, Seed (blank = secure random).

生成随机二进制数Generate Random Binary Numbers

生成指定位数的随机二进制串。本地处理。可设置「个数」、「位数」、「种子（留空 = 安全随机）」、「加 0b 前缀」。Generate random binary strings of a chosen bit length. Processed locally. Settings: How many, Bits, Seed (blank = secure random), Prefix 0b.

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由正则生成随机串Generate Random Data from Regexp

根据正则表达式生成随机字符串：支持 \d \w \s（及大写取反）、.、[...] 与 [^...]、分组 (...) 和 (?:...)、任意位置的 | 选择、? * + {2} {2,} {2,5} 形式的量词以及 ^ $ 锚点。本地处理。Generate random strings from a regular expression: \d \w \s (and their negations), ., [...] and [^...] classes, (...) and (?:...) groups, | alternation anywhere, ? * + quantifiers such as {2} {2,} {2,5} and the ^ $ anchors. Processed locally.

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