Convert between joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, electronvolts, BTUs, and foot-pounds. Instant bidirectional conversion with an all-units table.
Result
4.184 kJ
1 kcal = 4.184 kJ
All Conversions from 1 kcal
4184
4.184
1000
1
1.1622222222
0.0011622222
2.611447e+22
3.9656512426
3085.9599149738
LevnTools Energy Converter lets you convert between units instantly directly in your browser. Everything runs locally in your browser — your units and measurements never leave your device. Unlike cloud-only alternatives that require uploads and accounts, this tool is completely free with no usage limits or watermarks. It is designed for students solving physics and chemistry problems, engineers converting between metric and imperial, everyday users converting cooking measurements — anyone who needs a fast, reliable unit converters tool without the overhead of installing software. Just open the page and start working.
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Select "Kilocalorie (kcal)" as the From unit and "Kilojoule (kJ)" as the To unit. Enter your value and the conversion appears instantly. 1 kcal equals approximately 4.184 kJ.
A calorie (cal) is the energy needed to raise 1 gram of water by 1 degree Celsius. A kilocalorie (kcal) equals 1000 calories and is the unit commonly used on food nutrition labels (often written as "Calorie" with a capital C).
The converter supports joule (J), kilojoule (kJ), calorie (cal), kilocalorie (kcal), watt-hour (Wh), kilowatt-hour (kWh), electronvolt (eV), British thermal unit (BTU), and foot-pound (ft·lb).
Conversions use precise standard factors with up to 10 decimal places. Results are displayed with trailing zeros trimmed for readability.
Yes, completely free. All calculations happen in your browser — no server calls, no signup, no limits.