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Tools

Unlike calculators, tools transform what you give them into something else — encoding, decoding, converting, or reformatting data — rather than computing a single number.

All tools

Lorem Ipsum Generator — Placeholder Text

Generate classic lorem ipsum placeholder text as paragraphs, sentences, or words. Freshly randomized each click, 100% in your browser.

Text & Data

CSV ↔ JSON Converter — CSV to JSON or JSON to CSV

Convert CSV to JSON or JSON to CSV instantly, both directions live. RFC 4180 parsing, quoted fields, nested-value flattening — 100% client-side.

Text & Data

UUID Generator — RFC 4122 Version 4 UUIDs

Generate cryptographically random version 4 UUIDs in batches of 1 to 25, entirely in your browser. One-click copy, 100% client-side.

Text & Data

Slug Generator — URL-Friendly Slugs From Any Title

Turn any title into a clean, SEO-friendly hyphenated slug instantly. Lowercasing, accent stripping, punctuation removal — live as you type.

Text & Data

Hash Generator — MD5, SHA-1 & SHA-256

Hash any text with MD5, SHA-1, or SHA-256 and get a hex digest instantly. Native WebCrypto for SHA, in-browser MD5 — 100% private.

Text & Data

Unix Timestamp Converter — Seconds to Date & Back

Convert Unix timestamps (seconds) to readable ISO 8601 dates and back instantly. Negative pre-1970 values supported, current-time shortcut, 100% client-side.

Time & Dates

Time Zone Converter — Convert Times Between Zones

Convert a wall-clock time in any time zone into any city worldwide. All 400+ IANA zones are searchable by name, daylight saving aware, 100% client-side.

Time & Dates

Universal Unit Converter — Length, Weight, Temperature & More

Convert between units of length, weight, temperature, volume, and data storage instantly — meters to feet, kilograms to pounds, Celsius to Fahrenheit, and more.

Measurements & Units

File Size Converter — KB, MB, GB & TB

Convert file sizes between bytes, KB, MB, GB, and TB in both decimal (1000) and binary (1024) conventions, with an Auto mode for the most readable result. 100% client-side.

Measurements & Units

URL Encoder & Decoder — Percent-Encode or Decode Text

Percent-encode text for safe use in URLs, or decode percent-encoded strings back to plain text. Full Unicode and emoji support, 100% in your browser.

Text & Data

Word & Character Counter — Words, Characters & Reading Time

Count words, characters (with and without spaces), sentences, paragraphs, and reading time in any text. Accurate emoji handling, 100% client-side.

Text & Data

Case Converter — camelCase, snake_case, kebab-case & Title Case

Convert text to camelCase, snake_case, kebab-case, or Title Case instantly. Handles spaces, hyphens, underscores, dots, and camel boundaries — 100% client-side.

Text & Data

JSON Formatter & Minifier — Pretty-Print or Minify JSON

Pretty-print or minify JSON instantly with precise error messages for invalid input. Strict standard JSON parsing, 100% in your browser.

Text & Data

Base64 Encoder & Decoder

Instantly encode plain text to Base64 or decode Base64 back to readable text, with full Unicode and emoji support. 100% client-side, no data sent to a server.

Text & Data

Regex Tester — Test Regular Expressions Instantly

Test JavaScript regular expressions against any text with live match highlighting, counts, and capture groups. 100% in your browser, nothing is uploaded.

Text & Data

Password Generator — Strong Random Passwords

Generate strong, cryptographically secure random passwords with adjustable length and character types. Guaranteed class coverage, live entropy estimate, 100% in your browser.

Text & Data

Color Converter — HEX, RGB & HSL

Convert colors between HEX, RGB, and HSL instantly — type a hex code, pick a color visually, or edit any channel, and all three formats stay in sync. Free, 100% in your browser.

Design & Color

Color Palette Generator — Six Color Harmony Schemes

Generate a five-color palette from any base color using classic harmony rules — monochromatic, analogous, complementary, split-complementary, triadic, and tetradic. Shuffle for inspiration, 100% client-side.

Design & Color

Caesar Cipher Translator — Shift Letters by Any Amount

Encode or decode text with the classic Caesar cipher using any shift from 0 to 25, with ROT13 presets. Live as you type, 100% in your browser.

Ciphers & Codes

Morse Code Translator — Text to Morse & Morse to Text

Translate text to International Morse code or decode Morse back to text instantly — letters, digits, and punctuation. 100% in your browser.

Ciphers & Codes

NATO Phonetic Alphabet Translator — Alpha, Bravo, Charlie

Translate text to the NATO phonetic alphabet (Alfa, Bravo, Charlie…) or decode code words back to text instantly — letters and digits, live as you type. 100% in your browser.

Ciphers & Codes

Vigenère Cipher Encoder & Decoder — Keyword Cipher

Encrypt or decrypt text with the Vigenère cipher — the polyalphabetic keyword cipher once called 'le chiffre indéchiffrable'. 100% in your browser.

Ciphers & Codes

Atbash Cipher Translator — Reverse-Alphabet Substitution

Encode or decode text with the Atbash cipher — the ancient reverse-alphabet substitution (A ↔ Z), with no key needed. 100% in your browser.

Ciphers & Codes

ROT47 Cipher Translator — Rotate Letters, Digits & Symbols

Encode or decode text with ROT47 — rotate every printable ASCII symbol (letters, digits, and punctuation) 47 positions. 100% in your browser.

Ciphers & Codes

A1Z26 Cipher Translator — Letters to Numbers & Back

Convert letters to their alphabet positions (A = 1 … Z = 26) and back instantly — the classic letter-number code used in puzzles. 100% in your browser.

Ciphers & Codes

Playfair Cipher Encoder & Decoder — Digraph Substitution Cipher

Encrypt or decrypt text with the Playfair cipher — the 1854 digraph cipher that substitutes letter pairs using a 5×5 key square. Live key-square display, 100% in your browser.

Ciphers & Codes

Rail Fence Cipher Encoder & Decoder — Zigzag Transposition

Encrypt or decrypt text with the rail fence cipher — the classic zigzag transposition with an adjustable rail count. 100% in your browser.

Ciphers & Codes

Beaufort Cipher Encoder & Decoder — Reciprocal Keyword Cipher

Encode or decode text with the Beaufort cipher — the reciprocal Vigenère variant where encrypting and decrypting are the same operation. 100% in your browser.

Ciphers & Codes

Affine Cipher Encoder & Decoder — Linear Substitution y = ax + b

Encode or decode text with the affine cipher — the classic linear substitution C = (aP + b) mod 26 with two numeric keys. 100% in your browser.

Ciphers & Codes

Markdown to HTML Converter — Instant Markdown Conversion

Convert Markdown to clean HTML instantly — headings, lists, tables, code blocks, links, and emphasis. Safe output with raw HTML escaped, 100% in your browser.

Text & Data

PDF Merger — Combine Multiple PDFs Into One

Merge multiple PDF files into a single PDF in any order. Drag to reorder, combine with one click — 100% in your browser, files never leave your device.

Text & Data

PDF Password Remover — Remove Known PDF Passwords

Remove password protection from PDFs you can open. Decrypt with the known password and download an unencrypted copy — 100% in your browser, files never leave your device.

Text & Data

PDF Password Protector — Password-Protect & Restrict PDFs

Add password protection to PDFs in your browser. Set a password to open, restrict printing, copying and editing, protect several files at once — files never leave your device.

Text & Data

PDF Compressor — Shrink PDF File Size

Shrink a PDF's file size by recompressing its embedded photos and scans. Choose a compression level and download — 100% in your browser, files never leave your device.

Text & Data

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Anything that computes a numeric result from your inputs lives on the Calculators page.