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Energy

Browse Energy conversions

1 kilocalorie = 3.9656668314 British thermal unit

Precision
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How This Conversion Works

Kilocalorie and British thermal unit are both used for energy conversions. This page converts 1 kilocalorie into 3.9656668314 British thermal unit using the formula shown below.

Use this result for quick checks, comparisons, and everyday reference. For work that depends on exact precision, review the rounding setting and the assumption note before using the number.

The precision controls let you switch between a shorter result, the standard readable result, and scientific notation when the value is very large or very small.

Unit Notes

  • 1 kilocalorie (kcal) equals 4184 joule.
  • 1 British thermal unit (BTU) equals 1055.05585262 joule.

Conversion Questions

How do you convert kilocalorie to British thermal unit?

This page converts kilocalorie to British thermal unit using this formula: (1 x 4184) / 1055.05585262.

What is 1 kilocalorie in British thermal unit?

1 kilocalorie equals 3.9656668314 British thermal unit.

How many decimals does this converter show?

Displayed to 10 decimal places, trimmed for readability. The precision buttons can also show a shorter result or scientific notation.

Equivalent Values

4184 joule
4.184 kilojoule
1000 calorie
1 kilocalorie
1.1622222222 watt-hour
0.0011622222 kilowatt-hour
3.9656668314 British thermal unit
26114473967543832805376 electronvolt
0.0000396567 therm

Nearby Values

0.5 kilocalorie 1.9828334157 British thermal unit
1 kilocalorie 3.9656668314 British thermal unit
2 kilocalorie 7.9313336628 British thermal unit
5 kilocalorie 19.828334157 British thermal unit
10 kilocalorie 39.6566683139 British thermal unit
Formula
(1 x 4184) / 1055.05585262
Rounding
Displayed to 10 decimal places, trimmed for readability.
Assumption
Energy units use SI definitions. Calorie is the thermochemical calorie at 4.184 joules. BTU is the International Table BTU.

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