Energy
Browse Energy conversions1 calorie = 0.0039656668 British thermal unit
How This Conversion Works
Calorie and British thermal unit are both used for energy conversions. This page converts 1 calorie into 0.0039656668 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 calorie (cal) equals 4.184 joule.
- 1 British thermal unit (BTU) equals 1055.05585262 joule.
Conversion Questions
How do you convert calorie to British thermal unit?
This page converts calorie to British thermal unit using this formula: (1 x 4.184) / 1055.05585262.
What is 1 calorie in British thermal unit?
1 calorie equals 0.0039656668 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
Nearby Values
- Formula
- (1 x 4.184) / 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.