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Format JSON, generate QR codes, decode tokens, hash data, compress images, and inspect networks. 100% free, client-side, and privacy-first.

Trending: JSON Formatter QR Code JWT Debugger Hash Checksum Strong Passwords

Math & Measurement

Epoch timestamps, unit conversions, and percentage calculators.

Math & Measurement

Convert Unix epoch timestamps to human-readable dates (UTC and local) and parse date strings into epoch seconds & milliseconds.

Client-side

Math & Measurement

Convert Digital Storage (B, KB, MB, GB, TB, PB), Length, Weight, Temperature, Speed, and Time units.

Client-side

Math & Measurement

Calculate percentage of a value, percentage increase/decrease, margin/markup, and discount price calculations.

Client-side

Your code, text, tokens, and data never leave your browser. All computations happen entirely client-side.

Instant execution without server waiting times, rate-limiting, or annoying captchas.

Completely free with no subscriptions, accounts, or hidden paywalls. Built for developers and creators.