🕐UNIX Timestamp Converter 🔢Base Converter 🔤ASCII / HEX Converter 🎨Color Converter 🖼️Image Format Converter 📊CSV / JSON Converter

🔣Bitwise Logic Calculator 🌐IP Address CIDR Calculator .*Regex Tester ⏰Cron Expression Parser 🔍Text Diff Checker

📝Base64 Encode / Decode 🔗URL Encode / Decode {}JSON Formatter 🔓JWT Decoder

#️⃣Hash Generator 🆔UUID Generator 📇ULID Generator 🔑Password Generator 📱QR Code Generator

Energy

Convert between Joules, kilowatt-hours, calories, kilocalories, BTU, electron volts and other energy units

Enter value

Unit

J—

kJ—

MJ—

kWh—

cal—

kcal—

BTU—

kgf·m—

eV—

© 2026 multi-tools.jpTerms of Service