Conversions From

SI Units to Imperial Units

Symbol

When You Know

Multiply By

To Find

Symbol

Length

mm

millimeters

0.039

inches

in

m

meters

3.28

feet

ft

m

meters

1.09

yards

yd

km

kilometers

0.621

miles

mi

Length

mm²

millimeters

0.0016

square inches

in²

m²

square meters

10.764

square feet

ft²

m²

square meters

1.195

square yards

yd²

ha

hectares

2.47

acres

ac

km²

square kilometers

0.386

square miles

mi²

Volume

mL

milliliters

0.034

fluid ounces

fl oz

L

liters

0.264

gallons

gal

m³

cubic meters

35.314

cubic feet

ft³

m³

cubic meters

1.307

cubic yards

yd³

Mass

g

grams

0.035

ounces

oz

kg

kilograms

2.202

pounds

lb

Mg (or "t")

megagrams (or "metric ton")

1.103

short tons (2000 lb)

T

Temperature

oC

Celsius

1.8C + 32

Fahrenheit

oF

Illumination

lx

lux

0.0929

foot-candles

fc

cd/m²

candela/m²

0.2919

foot-Lamberts

fl

Force & Pressure or Stress

N

newtons

0.225

poundforce

lbf

kPa

kilopascals

0.145

poundforce per square inch

lbf/in²