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British-thermal-unit Group

Characteristic

British-thermal-unit

( International Steam Table definition )

Notes

Symbol

Btu

Other Names

British-thermal-unit-IT, Btu-IT, BThU, BThU-IT

Metric (SI) Equivalent

1.0550558526 kilojoules

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

Other Metric (SI) Equivalents with More Basic Units

1.0550558526 kilonewton meters

1055.0558526 meter2 kilograms / second2

Metric (SI) Dimensions

length2 × mass × time-2

Description in Terms of Other Units and Constants

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

Quantity

Energy, Work, and Heat

Characteristic

British-thermal-unit-39

( Value at 39 °F )

Notes

Other Names

Btu-39, BThU-39

Metric (SI) Equivalent

1.05967 kilojoules

Other Metric (SI) Equivalents with More Basic Units

1.05967 kilonewton meters

1059.67 meter2 kilograms / second2

Metric (SI) Dimensions

length2 × mass × time-2

Quantity

Energy, Work, and Heat

Characteristic

British-thermal-unit-59

( Value at 59 °F )

Notes

Other Names

Btu-59, BThU-59

Metric (SI) Equivalent

1.0548 kilojoules

Other Metric (SI) Equivalents with More Basic Units

1.0548 kilonewton meters

1054.8 meter2 kilograms / second2

Metric (SI) Dimensions

length2 × mass × time-2

Quantity

Energy, Work, and Heat

Characteristic

British-thermal-unit-60

( Value at 60 °F )

Notes

Other Names

Btu-60, BThU-60

Metric (SI) Equivalent

1.05468 kilojoules

Other Metric (SI) Equivalents with More Basic Units

1.05468 kilonewton meters

1054.68 meter2 kilograms / second2

Metric (SI) Dimensions

length2 × mass × time-2

Quantity

Energy, Work, and Heat

Characteristic

British-thermal-unit-mean

( Average value from 0 °C to 100 °C )

Notes

Other Names

Btu-mean, BThU-mean

Metric (SI) Equivalent

1.05587 kilojoules

Other Metric (SI) Equivalents with More Basic Units

1.05587 kilonewton meters

1055.87 meter2 kilograms / second2

Metric (SI) Dimensions

length2 × mass × time-2

Quantity

Energy, Work, and Heat

Characteristic

British-thermal-unit-th

( Thermochemical definition )

Notes

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)

Quantity

Energy, Work, and Heat