Free online tools

A handpicked collection of fast, free, browser-based utilities. No signup, no install, no clutter — just useful tools for everyday tasks.

Everyday calculators

For the math you don't want to do twice

⏱

Calculate Hours

Free time and pay calculators — hours, overtime, time zones, age.

⬜

Square Footage

Calculate area of rooms, lots, and surfaces in any unit.

Percentage Calculator

Every percentage variant — increase, decrease, difference, of a number.

⌛

Age Calculator

Exact age in years, months, days, hours — between any two dates.

↔

Unit Cheatsheet

Engineering and scientific unit reference, converters, and charts.

Text & writing utilities

For words, not numbers

📝

Word Counter

Count words, characters, sentences, and reading time as you type.

↻

Text Repeat

Repeat any text N times with optional separators. For testing or formatting.

🔐

Password Strength

Test how strong a password is and how long it would take to crack.

Developer utilities

For when you just need it now

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Base64 Encode / Decode

Convert text and files to and from Base64. Supports UTF-8 and data URLs.

%2F

URL Encode / Decode

Percent-encode or decode URLs and query parameters.

{}

JSON Tools

Format, validate, minify, and convert JSON. Diff two files side by side.

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text or files.

UUID Generator

Generate UUID v1, v4, v7 and other versions. Bulk generation supported.

⏱

Epoch / Unix Time

Convert between Unix timestamps and human-readable dates.

⌗

Crontab Helper

Build and decode crontab expressions with plain-English explanations.

/^$/

Regex Guide

Build and test regular expressions with a reference and live explanations.