kJ to Kcal Converter
Convert kilojoules to kilocalories: 1 kJ = 0.239006 kcal. Exact factor, formula and a conversion chart.
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Result
- 1 kJ
- 0.239006 kcal
- 1 kcal
- 4.184 kJ
How it's calculated
kilocalories = kilojoules × 0.239006
To convert kJ to kcal, divide by 4.184.
kJ in every unit
| joule | 1,000 J |
| calorie | 239.006 cal |
| kilocalorie (food calorie) | 0.239006 kcal |
| watt-hour | 0.277778 Wh |
| kilowatt-hour | 0.000277778 kWh |
| British thermal unit | 0.947817 BTU |
kJ to kcal conversion chart
| kilojoule (kJ) | kilocalorie (food calorie) (kcal) |
|---|---|
| 1 kJ | 0.239006 kcal |
| 2 kJ | 0.478011 kcal |
| 3 kJ | 0.717017 kcal |
| 4 kJ | 0.956023 kcal |
| 5 kJ | 1.19503 kcal |
| 6 kJ | 1.43403 kcal |
| 7 kJ | 1.67304 kcal |
| 8 kJ | 1.91205 kcal |
| 9 kJ | 2.15105 kcal |
| 10 kJ | 2.39006 kcal |
| 12 kJ | 2.86807 kcal |
| 15 kJ | 3.58509 kcal |
| 20 kJ | 4.78011 kcal |
| 25 kJ | 5.97514 kcal |
| 50 kJ | 11.9503 kcal |
| 100 kJ | 23.9006 kcal |
How many kilocalories are in 1 kilojoule?
1 kilojoule = 0.239006 kilocalories. To convert kilojoules to kilocalories, divide by 4.184. For example, 10 kJ = 2.39006 kcal and 100 kJ = 23.9006 kcal. Enter any value above for an exact result.
The Unit Converter changes a value from one unit to another across 11 kinds of measurement: length, weight, temperature, volume, area, speed, time, digital storage, energy, pressure and fuel economy. It covers metric units (centimetres, kilograms, litres), US and UK imperial units (inches, pounds, gallons) and everyday ones such as cups, stones, acres and kilowatt-hours.
Conversions use the official definitions — 1 inch is exactly 2.54 cm, 1 pound exactly 0.45359237 kg, 1 US gallon exactly 3.785411784 litres — and the page shows the factor, the formula, the value in every other unit and a chart of common values, so you can check or reuse the numbers.
When to use it
- Converting height and weight between metric and imperial (cm ↔ feet and inches, kg ↔ lbs).
- Cooking with recipes from another country (cups, tablespoons, ml, grams, ounces).
- Reading weather and oven temperatures in Celsius or Fahrenheit.
- Property sizes in square feet, square metres, acres and hectares.
- File sizes (MB ↔ GB), fuel economy (mpg ↔ L/100 km) and tyre pressure (psi ↔ bar).
Tips for better results
- US and UK gallons and pints differ by about 20% — check which one a recipe or car manual uses.
- Temperature is not a simple multiplication: use the formula shown (°F = °C × 9/5 + 32).
- Storage makers use 1 GB = 1,000 MB, while some operating systems show GiB (1,024 MiB) — both are listed.
How to use the Unit Converter
- Choose the measurement, such as length or temperature.
- Enter the value and pick the units to convert from and to.
- Read the result, the value in every other unit and the conversion chart below.
Frequently asked questions
How do I convert kilojoules to kilocalories?
To convert kilojoules to kilocalories, divide by 4.184. For example, 10 kJ = 2.39006 kcal.
How do I convert kilocalories back to kilojoules?
Press the swap button between the units. 1 kcal = 4.184 kJ.
Is the conversion exact?
Yes. It uses the official definitions of the units; results are only rounded to six significant digits for display.
Are the conversions exact?
Yes. Units are converted with their defined factors — for example 1 inch is exactly 2.54 cm and 1 pound is exactly 0.45359237 kg — and results are rounded to six significant digits only for display.
Are cups and gallons US or UK?
Cups, pints, quarts and gallons are US customary units unless marked UK. UK (imperial) gallons and pints are listed separately because they are about 20% larger.
How many centimetres are in an inch?
Exactly 2.54 cm. To convert inches to centimetres, multiply by 2.54; to convert centimetres to inches, divide by 2.54.
How do I convert kilograms to pounds?
Multiply by 2.20462 (1 kg = 2.20462 lb). To convert pounds to kilograms, multiply by 0.453592.