Tools

Everyday utilities

Text, time, numbers, and developer helpers.

18+ Calculators 100% Free No Sign Up
Finance Health Math Real Estate Business Baby Fun

Random Number Generator

Create lists with ranges, unique picks & history.

Remove Extra Spaces

Clean text: trim, collapse spaces & line breaks.

Typing Speed Test

WPM, accuracy and live stats.

Case Converter

UPPER, lower, Title, Sentence & more.

Word Counter

Words, chars, sentences, reading time.

Countdown Timer

Large display with progress & embeds.

Number to Words Converter

Indian & International formats, cases.

Online Stopwatch

Lap times, keyboard control, big digits.

QR Code Generator

Custom shapes, logo, download as PNG/SVG.

Time Zone Converter

Compare cities with analog clock.

Password Generator

Strong, memorable, and passphrase options.

Color Picker Tool

Pick, palette, contrast & copy HEX/RGB.

Meta Tag Generator

SEO & social preview tags in one click.

Domain Age Checker

Registration date, expiry & exact age.

Binary ↔ Decimal ↔ Hex Converter

BigInt-powered conversions with history.

JSON Formatter & Validator

Format, validate and minify JSON instantly.

Image to Base64 Converter

Convert images to Base64 data URIs.

Calci Code Compiler

Write and run HTML, CSS & JS with live preview.

Do more with Calci.in

Writers & coders

Writers & coders

Word counts, case conversion, meta tags and more.

Time & numbers

Time & numbers

Timers, stopwatches, randomizers and converters.

Share easily

Share easily

QR codes and color pickers on the fly.