Free Online Developer & Utility Tools
31 tools for developers, writers, and everyday users. Format data, convert dates, generate passwords, and calculate values instantly in your browser.
Free browser-based tools for developers and everyday users. All processing happens locally. No signup, no tracking, no data stored.
Browse by Category
Find the right tool for your task
Data & Format Tools
Format, validate, and convert JSON, YAML, and other structured data formats.
5 tools →
Date & Time Utilities
Convert timestamps, calculate date differences, and work with time zones.
6 tools →
Text & Writing Tools
Transform text case, count words, and clean up messy content.
7 tools →
Calculators
Calculate percentages, age, EMI payments, BMI, and more.
5 tools →
Web & Security Utilities
Encode URLs, generate UUIDs, decode JWTs, and work with Base64.
8 tools →
Lightning Fast
All tools run locally in your browser. No server delays.
Privacy First
Your data never leaves your device. We do not store anything.
Free Forever
No signup, no subscription, no hidden fees. Just tools.