How Many BTUs in a Calorie?

Quick Answer
1 Calorie = 0.004 BTUs

1 cal = 0.004 BTU

Formula

BTU = cal × 0.004

Conversion Table

Calories (cal)BTUs (BTU)
1 cal0.004 BTU
2 cal0.008 BTU
5 cal0.02 BTU
10 cal0.04 BTU
20 cal0.079 BTU
50 cal0.198 BTU
100 cal0.397 BTU
500 cal1.983 BTU
1,000 cal3.966 BTU

Worked Examples

Convert 5 cal to BTU:
5 cal × 0.004 = 0.02 BTU
Convert 10 cal to BTU:
10 cal × 0.004 = 0.04 BTU
Convert 50 cal to BTU:
50 cal × 0.004 = 0.198 BTU

FAQ

How many BTUs are in 1 Calorie?
There are 0.004 BTUs in 1 Calorie. Formula: BTU = cal × 0.004.
How to convert Calories to BTUs?
To convert Calories to BTUs, multiply the number of Calories by 0.004. For example, 10 cal = 0.04 BTU.
How many BTUs are in 100 Calories?
There are 0.397 BTUs in 100 Calories. Calculation: 100 × 0.004 = 0.397.