Metric Conversion Tables

Units of Heat and Energy
To Convert Multiply by To Obtain
gr-cal 0.003969 Btu
kg-cal 3.9693 Btu
kg-cal/kg 1.800 Btu/lb
gr-cal/sq cm 3.687 Btu/sq ft
kg-cal/cu m 0.1124 Btu/cu ft
joule 0.7376 ft-lb
meter-kg 7.2330 ft-lb
gr-cal 3.087 ft-lb
To Convert Multiply by To Obtain
kg-cal 3,087 ft-lb
hp-hr 1,980,000 ft-lb
kwhr 2,655,000 ft-lb
Btu 778.3 ft-lb
Btu 252 gr-cal
Btu 0.252 kg-cal
Btu/lb 0.5556 kg-cal/kg
Btu/sq ft 0.2713 gr-cal/sq cm
To Convert Multiply by To Obtain
Btu/cu ft 8.896 kg-cal/cu m
ft-lb 1.356 joule
ft-lb 0.1383 meter kg
ft-lb 0.3239 gr-cal
ft-lb 0.000324 kg-cal
ft-lb 0.000000505 hp-hr
ft-lb 0.000000377 kwhr
ft-lb 0.001285 Btu

Units of Power
To Convert Multiply by To Obtain
watts 0.7376 ft-lb/sec
watts 0.001341 hp
To Convert Multiply by To Obtain
kw 1.3410 hp
cheval-vap 0.9863 hp
ft-lb/sec 1.356 watts
To Convert Multiply by To Obtain
hp 745.7 watts
hp 0.7457 kw
hp 1.0139 cheval-vap

Volume - Flow Rates
To Convert Multiply by To Obtain
liters/sec 15.85 gpm
liters/min 0.2642 gpm
liters/min 0.03531 cfm
liters/hr 0.0044 gpm
cu m/min 35.314 cfm
To Convert Multiply by To Obtain
cu m/min 264.17 gpm
cu m/hr 0.5883 cfm
cu m/hr 4.4028 gpm
gpm 0.0631 liters/sec
gpm 227.1 liters/hr
To Convert Multiply by To Obtain
gpm 3.785 liters/min
gpm 0.003786 cu m/min
gpm 0.2271 cu m/hr
cfm 28.317 liters/min
cfm 0.02832 cu m/min
cfm 1.6992 cu m/hr

Units of Weight and Pressure
To Convert Multiply by To Obtain
gr/sq cm 0.01422 psi
gr/cu cm 0.0361 lb/cu in
kq/sq cm 14.22 psi
kg/cu m 0.0624 lb/cu ft
kg/m 0.6720 lb/ft
To Convert Multiply by To Obtain
meters water 1.42 psi
meters (any liquid) 1.42 x sp gr psi
mm mercury 0.001316 atm
lb/ft. 1.4881 kg/m
psi 70.31 gr/sq cm
To Convert Multiply by To Obtain
psi 0.07031 kg/sq cm
psi 0.7042 meters water
psi 0.7042/sp gr meters (any liquid)
lb/cu in 27.68 gr/cu cm
lb/cu ft 16.018 kg/cu m
atm 760 mm mercury

Units of Weight
To Convert Multiply by To Obtain
grams 15.43 grains
grams 0.0353 oz.
kg 35.27 oz.
kg 2.2046 lb.
To Convert Multiply by To Obtain
kg 0.001102 tons
tonnes 2,204.6 lb.
tonnes 1.1023 tons
grains 0.0648 grams
oz. 28.350 grams
To Convert Multiply by To Obtain
oz. 0.02835 kg
lb. 0.4536 kg
lb. 0.000454 tonnes
tons 907.2 kg
tons 0.9072 tonnes

Units of Volume
To Convert Multiply by To Obtain
cu cm 0.06102 cu in.
cu cm 0.03381 fl oz.
cu meters 35.31 cu ft.
cu meters 1.308 cu yd.
cu meters 264.2 gal.
To Convert Multiply by To Obtain
liters 61.02 cu in.
liters 0.03531 cu ft.
liters 0.2642 gal.
cu in. 16.39 cu cm
cu in. 0.01639 liters
To Convert Multiply by To Obtain
cu ft. 0.02832 cu meters
cu ft. 28.317 liters
cu yd. 0.7646 cu meters
fl oz. 29.58 cu cm
gal. 0.003786 cu meters
gal. 3.786 liters

Units of Area
To Convert Multiply by To Obtain
sq mm 0.00155 sq in.
sq cm 0.155 sq in.
sq meters 10.764 sq ft.
sq meters 1.196 sq yd.
To Convert Multiply by To Obtain
sq km 0.3861 sq miles
hectares 2 acres
sq in. 645.2 sq mm
sq in. 6.452 sq cm
To Convert Multiply by To Obtain
sq ft. 0.0929 sq meters
sq yd. 0.8361 sq meters
sq miles 2.59 sq km
acres 0.4047 hectares

Units of Length
To Convert Multiply by To Obtain
mm 0.03937 in.
cm 0.3937 in.
meters 39.37 in.
meters 3.281 ft.
meters 1.0936 yd.
km 3,281 ft.
To Convert Multiply by To Obtain
km 1093.6 yd.
km 0.6214 miles
microns 0.00003937 in.
in. 25.4 mm
in. 2.54 cm
in. 0.0254 meters
To Convert Multiply by To Obtain
ft. 0.3048 meters
ft. 0.0003048 km
yd. 0.9144 meters
yd. 0.0009144 km
miles 1.609 km
in. 25,400 microns