Popular units

astronomical unit

centimeter

foot

inch

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light year

metre

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parsec

yard

Derived units

The following table lists units that are derived from or are compatible with the base SI units. Click the name of the unit to get more information about it as well as a conversion calculator and available conversion tables.

Unit name	Symbol	Derived from	SI equivalent
foot of water (39.2 °F)	ftH₂O	pascal	2988.98
foot per hour	fph	meter per second	8.466667E-05
foot per hour per second	fph/s	metre per second squared	8.466667E-05
foot per minute	fpm	meter per second	0.00508
foot per minute per second	fpm/s	metre per second squared	0.00508
foot per second	fps	meter per second	0.3048
foot per second squared	fps²	metre per second squared	0.3048
foot pound force	ft lbf	Newton metre	1.3558179483314
foot pound force (energy)	ft lbf	joule	1.3558179483314
foot pound force per hour	ft lbf/h	watt	0.0003766161
foot pound force per minute	ft lbf/min	watt	0.0225969658055233
foot pound force per second	ft lbf/s	watt	1.3558179483314
foot poundal	ft pdl	Newton metre	0.0421401100938048
foot poundal (energy)	ft pdl	joule	0.0421401100938048
footcandle	fc	lux	10.763910417
footlambert	fL	candela per square metre	3.4262590996
fortnight	fn	second	1209600
french catheter scale	Fr	metre	0.00033
french pied	-	metre	0.32484
furlong	fur	metre	201.168

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