Energy Converter

100% Free

Convert energy — joules, calories, kWh, BTU, electronvolts, and foot-pounds.

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Client-Side

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We're building Energy Converter right now. Drop your email and we'll notify you the moment it's live.

Convert energy — joules, calories, kWh, BTU, electronvolts, and foot-pounds.

This tool is on the roadmap. The interface and full documentation are being built — check back soon, or request priority to bump it up the queue.

Convert integers between binary, octal, decimal, hex — BigInt-precise so values past 2^53 work without rounding. Accepts 0b/0o/0x prefixes.

Parse any color (hex, rgb, hsl, named) and get all 4 representations — HEX, RGB, HSL, HSV — with one-click copy.

Convert currencies with live exchange rates.

Convert between mm, cm, m, km, inches, feet, yards, miles — all 8 units update live as you type into any cell.

Convert km/h ↔ mph ↔ m/s ↔ knots ↔ ft/s — all 5 units update instantly as you type.

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