Every tool, in one place

Popular

JSON Formatter

Beautify, minify, and validate JSON with instant error hints.

Base64 Encode / Decode

Convert text and files to and from Base64 in one click.

Diff Checker

Compare two texts and highlight every difference, side-by-side or inline.

URL Encoder / Decoder

Percent-encode or decode text and parse query strings, all in your browser.

HTML Entity Encoder / Decoder

Escape and unescape HTML entities, with optional numeric encoding.

Cron Expression Builder

Explain a cron schedule in plain English and preview its next run times.

HTML Minifier

Compress HTML by removing comments and collapsing whitespace.

CSS Minifier

Shrink CSS by stripping comments and unnecessary whitespace.

JSON Escape / Unescape

Escape raw text into a JSON-safe string and unescape it back.

HTTP Status Codes

Searchable reference of HTTP status codes with plain-English meanings.

Regex Cheatsheet

Searchable reference of regular expression tokens and flags.

ASCII Table

Searchable character codes in decimal, hex, octal and binary.

PX to REM Converter

Convert between px, rem, em and pt against a root font size.

Spreadsheet Column Converter

Convert a spreadsheet column number to its letter (1 → A) and back.

Srcset Generator

Build responsive <img> markup with srcset and sizes from your widths.

Regex Tester

Test regular expressions with live match highlighting, capture groups and replace preview.

HTML to Markdown

Convert HTML to clean Markdown — pastes, imports files, and handles lists, tables and code.

JSON Schema Validator

Validate JSON against a JSON Schema (draft-07 / draft-2020-12) with clear error messages.

YAML Formatter

Validate, beautify, and convert YAML online. Real-time syntax highlighting, error detection with line numbers, and one-click JSON export.

Text & Writing

Word & Character Counter

Live counts for words, characters, sentences, and read time.

Markdown Preview

Live side-by-side preview with Mermaid diagrams, math, code highlighting & PDF export.

Case Converter

Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case and more.

Line Tools

Remove duplicate lines, sort, trim, reverse, shuffle and number text lines.

Find & Replace Text

Replace text in bulk with plain text or regex, ignore-case and whole-word.

Word Frequency Counter

Count word and phrase frequency with stop-word filtering and CSV export.

Text Cleaner

Remove extra spaces, line breaks, HTML and smart quotes from text.

Markdown Table Generator

Build Markdown tables in an editable grid or from CSV, with alignment.

Text Reverser

Reverse characters, words or lines, or flip text upside down.

Text to Speech

Read text aloud with selectable voices, rate and pitch — in your browser.

Text to Handwriting

Render typed text as handwriting on ruled paper and download it.

Fancy Text Generator

Turn plain text into stylish Unicode fonts for Instagram, TikTok and bios — copy with one click.

Word Unscrambler

Unscramble letters into every valid word — with wildcards, filters and Scrabble points.

Citation Generator

Format references in APA, MLA and Chicago styles — book, journal, website and more.

Anagram Solver

Find all words from any set of letters instantly — wildcard support, Scrabble scores and word-length filter.

ASCII Art Generator

Convert text to ASCII art banners with 7 font styles. One-click copy, Markdown export, works offline.

Character Counter

Count characters, words, sentences & lines in real time. Platform limit bars for Twitter/X, LinkedIn, SMS & Instagram. No upload.

Text Repeater

Repeat any text N times with custom separator (newline, comma, space, pipe, or custom). Copy or download output. No limits, no signup.

Image & Media

Image Corner Rounder

Round the corners of any image and download a transparent PNG — in your browser.

Popular

Image Compressor

Compress JPG, PNG and WebP images with a quality slider — in your browser.

Image Resizer

Resize images by pixels or percentage with an aspect-ratio lock.

Image Converter

Convert images between PNG, JPG and WebP with quality control.

Image Cropper

Crop images to any size or a fixed aspect ratio and download — in your browser.

Favicon Generator

Create a full favicon set from an image or letters and download a ZIP.

Placeholder Image Generator

Create custom-sized dummy images with your own colors and label.

Color Blindness Simulator

Preview images as people with color vision deficiencies see them.

Image to Base64

Encode images to Base64 data URIs and decode them back to images.

Image to PDF

Combine multiple JPG or PNG images into a single PDF — in your browser.

Image Watermark

Add a text watermark to an image with position, size and opacity.

Rotate & Flip Image

Rotate in 90° steps and flip an image horizontally or vertically.

Image Filters

Adjust brightness, contrast, saturation, blur and more, then download.

PNG to ICO

Convert an image into a multi-resolution .ico favicon in your browser.

EXIF Viewer & Remover

See a photo's hidden metadata — camera, date, GPS — and strip it for privacy.

PDF to JPG

Convert PDF pages to JPG, PNG or WebP images at the quality you choose — all in your browser.

Meme Generator

Make memes with classic top/bottom text or draggable text boxes — no watermark, no sign-up.

Image to Text (OCR)

Extract text from any image, screenshot or photo — free online OCR that runs entirely in your browser, no upload required.

SEO & Marketing

Slug Generator

Turn any title into a clean, SEO-friendly URL slug — bulk and accent-aware.

Meta Tag Generator

Generate SEO, Open Graph and Twitter Card meta tags with a live preview.

UTM Builder

Build trackable campaign URLs with utm_source, medium, campaign and more.

SERP Snippet Preview

Preview how your title and description look in Google, desktop and mobile.

Robots.txt Generator

Build a valid robots.txt with allow/disallow rules and a sitemap line.

Converters & Units

Unit Converter

Convert length, weight, temperature, area, volume, speed, time and data sizes.

Unix Timestamp Converter

Convert epoch time to a date and back, with live current time and ISO 8601.

Number Base Converter

Convert between binary, octal, decimal, hex and any base from 2 to 36.

Roman Numeral Converter

Convert numbers to Roman numerals and back, with validation.

Text to Binary Converter

Convert text to 8-bit binary and decode binary back to text.

Morse Code Translator

Translate text to Morse code and back, with audio playback.

Aspect Ratio Calculator

Lock a ratio and solve the missing width or height for a new size.

Number to Words

Spell any number in English words, with a currency mode for cheques.

Time Duration Calculator

Find the time between two clock times and add up multiple durations.

Time Zone Converter

Compare the time across cities and plan meetings that work for everyone.

Currency Converter

Convert between 30+ world currencies with recent reference rates — fully in your browser.

Scientific Calculator

Full scientific calculator with trig, log, factorial, powers and memory functions.

Quadratic Equation Solver

Solve ax² + bx + c = 0 and get real or complex roots with the discriminant and working shown.

Triangle Calculator

Solve any triangle — find missing sides, angles and area from any 3 known values.

Shoe Size Converter

Convert shoe sizes between US men & women, UK, EU and CM — with a complete international size chart.

Number Sequence Generator

Generate arithmetic and geometric sequences, Fibonacci, primes and custom formulas.

Celsius to Fahrenheit

Convert Celsius, Fahrenheit and Kelvin — three-way live conversion as you type. Key reference table included.

Cooking Measurement Converter

Convert cups, tablespoons, teaspoons, ml and grams — ingredient-aware for accurate baking conversions.

Speed Distance Time Calculator

Solve for speed, distance, or time — enter any two values and the third is calculated. Supports km/h, mph, m/s and mixed units.

Area Calculator

Area calculator for 10 shapes: circle, rectangle, triangle (3 methods), trapezoid, ellipse, rhombus & more. Formula shown instantly.

GCF & LCM Calculator

Find GCF (greatest common factor) and LCM (least common multiple) for up to 10 numbers. Euclidean algorithm steps & prime factorization shown.

Finance & Calculators

Percentage Calculator

Work out percentages, increases, decreases and reverse percentages instantly.

EMI / Loan Calculator

Calculate monthly loan EMI, total interest and total payment instantly.

Date Difference Calculator

Find the days between two dates, or add and subtract days from a date.

GST Calculator

Add or reverse GST for Australia, NZ, Canada and Singapore with one-tap rate presets.

Tip Calculator

Calculate the tip and split a bill between any number of people.

Discount Calculator

Find the sale price and savings from a percentage or flat discount.

SIP Calculator

Project SIP and lumpsum investment returns with an invested-vs-gains split.

Compound Interest Calculator

Project savings growth with compounding and regular contributions.

Hourly to Salary Calculator

Convert pay between hourly, daily, weekly, monthly and annual rates.

Mortgage Calculator

Estimate your monthly home loan payment with tax and insurance.

Profit Margin Calculator

Get profit, margin and markup, or price for a target margin.

Unit Price Calculator

Compare products by price per unit and find the best value.

Break-Even Calculator

Find the units and revenue needed to cover fixed costs.

Savings Goal Calculator

Find how much to save each month to reach a goal by a target date.

IBAN Validator

Validate an IBAN's country length and mod-97 checksum.

Timesheet Calculator

Total weekly work hours from daily start/end times and breaks, plus pay.

Invoice Generator

Build a clean invoice with line items and tax, and save it as a PDF.

Fraction Calculator

Add, subtract, multiply and divide fractions and mixed numbers — with every step shown.

Retirement Calculator

Project your 401k or IRA balance at retirement with contributions, employer match and inflation adjustment.

Tax Bracket Calculator

See your 2024 US federal income tax bracket, effective rate and marginal rate — for any filing status.

Paycheck Calculator

Convert gross pay to net take-home pay after federal/state tax, Social Security and Medicare.

Debt Payoff Calculator

Compare snowball vs avalanche payoff strategies and see exactly when you'll be debt-free.

Net Worth Calculator

Add your assets and liabilities to calculate your total net worth and see the breakdown.

Car Loan Calculator

Calculate your monthly auto payment, total interest and true cost of any car loan.

Monthly Budget Planner

Plan your monthly income, expenses and savings rate with a visual 50/30/20 breakdown. Auto-saves in your browser.

Personal Loan Calculator

Calculate monthly loan payments, total interest, and a full amortization schedule — any amount, rate, or term.

Split Bill Calculator

Split any restaurant bill with tip between people — even or custom proportional splits. No sign-up, works on mobile.

Electricity Bill Calculator

Estimate your monthly electricity cost by appliance. Enter your local rate and usage hours — instant cost breakdown with visual chart.

Fuel Cost Calculator

Road trip fuel cost calculator — enter distance, MPG & gas price. Supports MPG, L/100km, km/L. CO₂ estimate included.

Car Lease Calculator

Monthly car lease payment calculator — depreciation fee, finance fee, total cost & effective APR. Transparent formula-based breakdown.

Investment Calculator

ROI, CAGR, and inflation-adjusted return calculator. Lump sum + monthly contributions, year-by-year growth table and chart. 100% private.

Amortization Calculator

Full loan amortization schedule — monthly payment, principal vs interest per payment, total interest paid. Mortgage, auto, personal loans.

Simple Interest Calculator

Simple interest calculator: SI = P × R × T / 100. Shows total amount, effective rate & step-by-step formula. Supports years, months, days.

Generators

UUID Generator

Generate v4 and v7 UUIDs in bulk, ready to copy.

Popular

Password Generator

Strong, configurable passwords that never leave your device.

QR Code Generator

Turn links, text, or Wi-Fi into a scannable QR code.

Lorem Ipsum Generator

Generate placeholder text by paragraphs, sentences, words or list items.

Email Signature Generator

Build a clean HTML email signature for Gmail, Outlook and Apple Mail.

Fake Data Generator

Generate dummy records and export as JSON, CSV or SQL for testing.

Signature Maker

Draw or type your signature and download it as a transparent PNG.

Barcode Generator

Create Code 128, EAN-13 and UPC-A barcodes and download them as SVG or PNG.

Love Calculator

A fun compatibility score based on two names — share the result with your match.

Bingo Card Generator

Generate printable 5×5 bingo cards with your own words — unlimited cards, free.

Coin Flip

Flip a virtual coin — heads or tails — with animation and a streak counter.

Dice Roller

Roll any number of dice (d4–d100) with totals, history log and custom dice notation.

Business Name Generator

Generate creative business name ideas from keywords with industry-specific suggestions.

Random Name Generator

Generate random first and last names by nationality and gender — bulk export included.

Zodiac Sign Calculator

Find your zodiac sign by birthday — element, ruling planet, compatible signs and personality traits.

Random Number Generator

Generate one or thousands of random numbers in any range — no duplicates option, crypto-secure, instant copy.

Security & Privacy

Hash Generator

Compute MD5, SHA-1/2/3, Keccak, RIPEMD-160, BLAKE2b & CRC32 for text or files.

JWT Decoder

Decode a JSON Web Token, inspect claims, and verify HS256 signatures locally.

Password Strength Checker

Test password strength with entropy, crack-time estimates and tips.

Encrypt / Decrypt Text

AES-256 encrypt and decrypt messages with a passphrase, fully in your browser.

Credit Card Validator

Check a card number with the Luhn algorithm and detect its brand.

Passphrase Generator

Create memorable, word-based passphrases with a secure random generator.

Data & Format

JSON ⇄ CSV Converter

Convert a JSON array to CSV and CSV back to JSON, with proper quoting.

XML Formatter

Beautify, minify and validate XML right in your browser.

SQL Formatter

Beautify and minify SQL queries with keyword casing and clause breaks.

JSON to TypeScript

Generate TypeScript interfaces from a JSON sample, with nested types.

CSV Viewer

View, sort and search CSV or TSV files as a clean table — in your browser.

Statistics Calculator

Calculate mean, median, mode, standard deviation, variance and more from a data set.

Matrix Calculator

Add, subtract, multiply matrices and compute determinant, inverse and transpose for 2×2–4×4 matrices.

Design & Color

Color Picker & Converter

Pick a color and convert across HEX, RGB, HSL, and OKLCH.

Color Contrast Checker

Check WCAG AA/AAA contrast ratios between text and background colors.

CSS Gradient Generator

Build linear, radial and conic CSS gradients with a live preview.

CSS Box-Shadow Generator

Build multi-layer CSS box-shadows with presets and live preview. Copy the CSS, value, or React style instantly.

Color Palette Generator

Generate complementary, analogous, triadic and monochromatic palettes.

Cubic Bezier Generator

Design a CSS easing curve by dragging control points, with a live preview.

Border Radius Generator

Visually craft CSS rounded corners and organic blob shapes.

CSS Flexbox Playground

Adjust flex properties with a live preview and copy the CSS.

CSS Grid Playground

Adjust grid columns, gap and alignment with a live preview and CSS.

Glassmorphism Generator

Design a frosted-glass card and copy the CSS, with a live preview.

CSS Text-Shadow Generator

Tune a CSS text shadow with a live preview and copy the code.

Color Mixer

Blend two colors at any ratio and copy the result or any step.

Image Color Picker

Pick any color from an image and extract its dominant palette as HEX, RGB and HSL.

Pixel Art Maker

Draw pixel art on a customizable grid, pick colors, and export as PNG — in your browser.

Color Token Generator

Generate a full design-token scale (50–950 shades) from a single base color — CSS, Tailwind or JSON.

Health & Fitness

Age Calculator

Find your exact age in years, months and days, plus a birthday countdown.

BMI Calculator

Calculate your Body Mass Index and healthy-weight range, metric or imperial.

BMR & Calorie Calculator

Find your BMR and daily calorie needs (TDEE) with weight-loss, maintenance and gain targets, macros and 3 formulas.

Pregnancy Due Date Calculator

Find your baby's due date from your last period, conception, IVF transfer or ultrasound — with trimester dates and milestones.

Macro Calculator

Find your daily protein, carb and fat targets from your TDEE, goal and diet style.

Ideal Weight Calculator

See your ideal weight by four clinical formulas (Devine, Robinson, Miller, Hamwi) — metric or imperial.

Body Fat Calculator

Estimate your body fat percentage using the US Navy tape-measure method — no skinfold calipers needed.

Ovulation Calculator

Find your fertile window, ovulation date and next period from your cycle length and last period.

Sleep Calculator

Find the best bedtime or wake-up time based on 90-minute sleep cycles to wake up refreshed.

Water Intake Calculator

Calculate your daily water needs from your weight, activity level and climate.

Calories Burned Calculator

Estimate calories burned for 60+ exercises using MET values and your weight and duration.

Running Pace Calculator

Calculate your running pace, finish time and splits for any distance — 5K, 10K, half or full marathon.

TDEE Calculator

Total Daily Energy Expenditure calculator — maintenance calories, cut & bulk targets. Mifflin-St Jeor + Harris-Benedict. 100% private.

Dog Age Calculator

Convert dog years to human years by breed size using the 2020 DNA methylation study. Life stage, remaining lifespan, and age chart.

Protein Calculator

Daily protein intake calculator based on ISSN guidelines — adjust for muscle gain, fat loss, or maintenance. Includes meal distribution guide.

Productivity

Sign PDF

Draw or type a signature, place it on your PDF, and download — all in your browser.

Stopwatch & Timer

Accurate online stopwatch with laps and a countdown timer with presets.

Random Picker

Pick a random name, number, coin flip or dice roll — fair and instant.

Online Notepad

A distraction-free notepad that auto-saves in your browser, with word count.

Pomodoro Timer

Focus timer with work/break cycles, presets and a session counter.

GPA Calculator

Compute a credit-weighted GPA from your course grades and credits.

To-Do List

A simple task checklist that auto-saves in your browser.

Typing Speed Test

Test your typing speed in WPM with live accuracy, then share your score.

Spin the Wheel

A random name picker wheel — add entries, spin, and crown a winner with confetti.

Merge PDF

Combine multiple PDF files into one, reorder pages, and pick page ranges — all in your browser.

Split PDF

Split a PDF into separate files or extract exact pages — all in your browser.

Countdown to Date

A live countdown to any date — days, hours, minutes and seconds, with a shareable link.

CPS Test — Click Speed Test

Measure your clicks per second in 1–100 second modes — left click, right click or spacebar.

Reaction Time Test

Measure your reaction speed in milliseconds — click when the screen turns green.

Random Team Generator

Paste a list of names and split them into balanced random teams in one click.

Tournament Bracket Generator

Create single-elimination tournament brackets for 4–64 players or teams.

Grade Calculator

Compute your weighted final grade from assignments, exams and their weights.

Flashcard Maker

Create and study digital flashcards — flip, shuffle, and track your score. Saves locally.

Habit Tracker

Track daily habits with a 30-day grid, streaks and completion stats — saves in your browser.

Reading Speed Test

Test your words-per-minute reading speed with comprehension check and percentile rank.

Days Until

Live countdown to Christmas, your birthday, any date — days, hours, minutes ticking in real time. Shareable URL.

Web & Network

Email Validator

Validate email syntax in bulk and catch common domain typos.

Browser & Screen Info

See your screen size, viewport, device and browser details locally.

Subnet Calculator

IPv4 CIDR calculator: network, broadcast, host range and masks.

What Is My IP Address

Find your public IP address, country, city and ISP — no data is stored or shared.