UnitNerd

British thermal units to calories converter

Calories (cal)252.1644007

1 British thermal unit = 252.1644007 calories

How to convert British thermal units to calories

cal = BTU × 252.164400722

Multiply the number of British thermal units by 252.164400722 to get calories. Going the other way, divide by 252.164400722 (or multiply by 0.00396566683139).

One British thermal unit is exactly defined as 252.164400722 calories (to 12 significant figures), and one calorie is 0.00396566683139 British thermal units.

Worked examples

  1. Convert 5 British thermal units: 5 × 252.164400722 = 1,260.822004 1,260.822004 calories.
  2. Convert 12.5 British thermal units: 12.5 × 252.164400722 = 3,152.055009 3,152.055009 calories.
  3. Convert 250 British thermal units: 250 × 252.164400722 = 63,041.10018 63,041.10018 calories.

Quick-reference table

BTUcal
1252.1644007
2504.3288014
3756.4932022
51,260.822004
102,521.644007
153,782.466011
205,043.288014
256,304.110018
5012,608.22004
7518,912.33005
10025,216.44007
1,000252,164.4007
calBTU
10.003965666831
20.007931333663
30.01189700049
50.01982833416
100.03965666831
150.05948500247
200.07931333663
250.09914167078
500.1982833416
750.2974250124
1000.3965666831
1,0003.965666831

Related conversions

Frequently asked questions

How many calories are in 1 British thermal unit?

1 British thermal unit equals 252.1644007 calories.

What is the formula to convert British thermal units to calories?

Use cal = BTU × 252.164400722. Multiply the number of British thermal units by 252.164400722 to get calories. Going the other way, divide by 252.164400722 (or multiply by 0.00396566683139).

What is 100 British thermal units in calories?

100 British thermal units is 25,216.44007 calories.