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Metric Conversion Tables

The following tables list the conversion factors between commonly used units.

Look down the left hand column to find the units you are converting from, and then work across the table to your right to find the units that you are converting to.

x means multiply by the conversion factor.
/ means divide by the conversion factor.



Length, Distance

To:
From:
mm cm m in ft yd
mm / 10 / 1000 / 25.4 / 304.8 / 914.4
cm x 10 / 100 / 2.54 / 30.48 / 91.44
m x 1000 x 100 x 39.3701 x 3.28084 x 1.09361
in x 25.4 x 2.54 / 39.3701 / 12 / 36
ft x 304.8 x 30.48 / 3.28084 x 12 / 3
yd x 914.4 x 91.44 / 1.09361 x 36 x 3

To:
From:
km miles NM
km / 1.60934 / 1.852
miles x 1.60934 / 1.15078
NM x 1.852 x 1.15078



Area

To:
From:
ha ft² yd² acres
/ 10000 x 10.7639 x 1.19599 / 4050
ha x 10000 x 107639 x 11959.9 x 2.46914
ft² / 10.7639 / 107639 / 9 / 43593.8
yd² / 1.19599 / 11959.9 x 9 / 4843.76
acres x 4050 / 2.46914 x 43593.8 x 4843.76



Volume

To:
From:
l cc fl oz pt gal US gal
l x 1000 / 1000 x 33.814 x 1.76056 / 4.55 / 3.78514
cc / 1000 / 29.5735 / 568 / 4550 / 3785.41
x 1000 x 33842 x 1760.56 x 219.78 x 264.172
fl oz / 33.814 x 29.5735 / 33842 / 19.2064 / 153.854 / 128
pt / 1.76056 x 568 / 1760.56 x 19.2064 / 8.01056 / 6.66446
gal x 4.55 x 4550 / 219.78 x 153.854 x 8.01056 x 1.20198
US gal x 3.78514 x 3785.41 / 264.172 x 128 x 6.66446 / 1.20198



Weight, Mass

To:
From:
g kg t oz lb tons
g / 1000 / 28.3495 / 453.592
kg x 1000 / 1000 x 35.274 x 2.20462 / 1016
t x 1000 x 2204.62 / 1.016
oz x 28.3495 / 35.274 / 16
lb x 453.592 / 2.20462 / 2204.62 x 16 / 2239.9
tons x 1016 x 1.016 x 2239.9



Speed

To:
From:
m/s km/h mph kt
m/s x 3.6 x 2.23694 x 1.94384
km/h / 3.6 / 1.60934 / 1.852
mph / 2.23694 x 1.60934 / 1.15078
kt / 1.94384 x 1.852 x 1.15078



Pressure

To:
From:
kPa mbar psi
kPa x 10 / 6.89016
mbar / 10 / 68.9016
psi x 6.89016 x 68.9016



Torque

To:
From:
Nm in lb ft lb
Nm x 8.85666 / 1.35491
in lb / 8.85666 / 12
ft lb x 1.35491 x 12



Temperature

To:
From:
K °C °F
K - 273.15 (K - 273.15) x 9/5 + 32
°C + 273.15 x 9/5 + 32
°F (°F - 32) x 5/9 + 273.15 (°F - 32) x 5/9



Angle

To:
From:
rad deg grad
rad x 180/pi x 200/pi
deg x pi/180 x 10/9
grad x pi/200 x 9/10