Calorie → British thermal unit (cal → Btu)

1 cal = 0.0039656512425834 Btu
1 Calorie (cal) = 0.0039656512425834 British thermal unit (Btu).

Calorie (cal):


British thermal unit (Btu):

If you want to reverse convert, use British thermal unit → Calorie. 1 Btu = 252.16539196941 cal. You can also explore the full Energy converter page for more cross conversions.

Conversion formula

Calorie to British thermal unit formula: value in Btu = value in cal × 0.0039656512425834.

British thermal unit to Calorie formula: value in cal = value in Btu × 252.16539196941.

How to convert Calorie to British thermal unit

To convert Calorie to British thermal unit, multiply the value in cal by 0.0039656512425834. This gives the result in Btu.

For example, 1 cal = 0.0039656512425834 Btu and 10 cal = 0.039656512425834 Btu.

What is Calorie?

Calorie (cal): The thermochemical calorie is a heat unit equal to 4.184 joules. 1 cal = 4.184 J.

What is British thermal unit?

British thermal unit (Btu): A heat-energy unit found in heating and cooling specifications; Btu/h instead measures power. 1 Btu ≈ 1055.06 J.

FAQ

Calorie → other Energy units

• 1 calorie → joule = 4.184 joule
• 1 calorie → kilojoule = 0.004184 kilojoule
• 1 calorie = 4.184E-6 megajoule
• 1 calorie → kilocalorie = 0.001 kilocalorie
• 1 calorie → watt hour = 0.0011622222222222 watt hour
• 1 calorie = 1.1622222222222E-6 kilowatt hour
• 1 calorie = 1.1622222222222E-9 megawatt hour
• 1 calorie → british thermal unit = 0.0039656512425834 british thermal unit
• 1 calorie → foot pound = 3.0859553628063 foot pound
• 1 calorie = 26114473967544 mega electron volt
• 1 calorie = 2.6114473967544E+19 electron volt

Calorie → British thermal unit Table

The table below shows common values from Calorie to British thermal unit and the reverse direction for quick reference.

British thermal unit → Calorie Table

British thermal unit → Calorie

The reverse value is 1 Btu = 252.16539196941 cal.