Calories to BTU

Convert Calories to BTU. 1 cal equals 0.003966 BTU. Type a value on either side; the formula and tables below show how it works.

cal
BTU
1 Calories equals
0.003966BTU

Formula: BTU = cal × 0.003966. Example: 5 cal = 0.019828 BTU.

1 Calories in every unit

Joules4.184 J
Kilojoules0.004184 kJ
Kilocalories0.001 kcal
Watt-hours0.001162 Wh
Kilowatt-hours0.000001162 kWh
BTU0.003966 BTU
Therms0.00000004 thm
Electronvolts26,114,473,967,543,832,576 eV

Calories to BTU table

CaloriesBTU
0.1 cal0.000396567 BTU
0.25 cal0.000991417 BTU
0.5 cal0.001983 BTU
1 cal0.003966 BTU
2 cal0.007931 BTU
3 cal0.011897 BTU
4 cal0.015863 BTU
5 cal0.019828 BTU
10 cal0.039657 BTU
15 cal0.059485 BTU
20 cal0.079313 BTU
25 cal0.099142 BTU
50 cal0.198283 BTU
75 cal0.297425 BTU
100 cal0.396567 BTU
250 cal0.991417 BTU
500 cal1.9828 BTU
1,000 cal3.9657 BTU
BTUCalories
0.1 BTU25.2164 cal
0.25 BTU63.0411 cal
0.5 BTU126.0822 cal
1 BTU252.1644 cal
2 BTU504.3288 cal
3 BTU756.4932 cal
4 BTU1,008.66 cal
5 BTU1,260.82 cal
10 BTU2,521.64 cal
15 BTU3,782.47 cal
20 BTU5,043.29 cal
25 BTU6,304.11 cal
50 BTU12,608.22 cal
75 BTU18,912.33 cal
100 BTU25,216.44 cal
250 BTU63,041.1 cal
500 BTU126,082.2 cal
1,000 BTU252,164.4 cal

How to convert calories to btu

BTU = cal × 0.003966

Multiply the value in calories by 0.003966. To go the other way, divide by the same number, or multiply by 252.1644. For example, 5 cal × 0.003966 = 0.019828 BTU.

About the units

Calories (cal). The small (thermochemical) calorie, exactly 4.184 joules.

BTU (BTU). The international table British thermal unit, about 1,055 joules. Heating and air conditioning ratings in the US.

Other energy conversions

Joules to BTU · Kilojoules to BTU · Calories to Joules · Calories to Kilojoules · Calories to Kilocalories · Calories to Watt-hours · Calories to Kilowatt-hours · Calories to BTU · Calories to Therms · Calories to Electronvolts · Kilocalories to BTU · Watt-hours to BTU · Kilowatt-hours to BTU · BTU to Joules · BTU to Kilojoules · BTU to Calories · BTU to Kilocalories · BTU to Watt-hours · BTU to Kilowatt-hours · BTU to Therms · BTU to Electronvolts · Therms to BTU · Electronvolts to BTU

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