HappyTools

Unit converter

Energy Converter

Convert between joules, calories, kilocalories, kilowatt-hours, BTU, and electronvolts.

BTU to Calories

10 BTU = 2,521.65392 Calories
2,521.65392

About these units

BTU

The British thermal unit is the energy to raise 1 pound of water by 1 °F, about 1,055 joules. It's used for heating and air conditioning.

Calories

The calorie is the energy to raise 1 gram of water by 1 °C, about 4.184 joules. It's a small unit used in chemistry and physics.

Conversion formula

To convert BTU to Calorie, multiply the value by 252.165392.

Quick reference

BTUCalories
1252.165392
2504.3307839
51,260.82696
102,521.65392
10025,216.5392

Frequently asked questions

How many Calories are in one BTU?
1 BTU = 252.165392 Calories.
How many BTU are in one Calorie?
1 Calorie = 0.003965651243 (3.965651243 × 10⁻³) BTU.

Related tools