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( Thermochemical definition )


Other Names

Btu-th, BThU-th

Metric (SI) Equivalent

1.0543502645 kilojoules

This equivalent and the others below are calculated from exact values.

Other Metric (SI) Equivalents with More Basic Units

1.0543502645 kilonewton meters

1054.3502645 meter2 kilograms / second2

Metric (SI) Dimensions

length2 × mass × time-2

Description in Terms of Other Units and Constants

calorie-th (pound-mass / gram) (degree-Fahrenheit / degree-Celsius)


Energy, Work, and Heat

Unit Group

British-thermal-unit Group