Conversion Formulas
SI* Conversion Formulas
MULTIPLY
SI*
UNIT
millimeter (mm)
(1 inch = 25.4 mm exactly)
centimeter (cm) 10 mm
meter (m) 1000 mm
meter (m)
kilometer (km) 1000 m
APPROXIMATE CONVERSION
TO GET
BY
OR
MULTIPLY
CONV
NON-SI
FACTOR
UNIT
LENGTH
X 0.03937
= inch
millimeter2 (mm2 )
centimeter2 (cm2)
meter2 (m2)
meter2 (m2)
hectare (ha) 10,000 m2
kilometer2 (km2)
centimeter3 (cm3)
liter (l)
milliliter (ml )
1 cm3)
liter (l) 1000 ml
liter (l)
meter3 (m3) 1000 l
gram (g)
kilogram (kg) 1000 g
metric ton (t) 1000 kg
X 0.3937
X 3.28
X 1.09
X 0.62
AREA
X 0.00155
X 0.155
X 10.8
X 1.2
X 2.47
X 0.39
VOLUME
X 0.061
X 61
X 0.034
X 1.06
X 0.26
X 1.3
MASS
X 0.035
X 2.2
X 1.1
BY
TO
GET
MULTIPLY
CONV
FACTOR
SI*
UNIT
SI*
UNIT
X 25.4
= mm
newton (N)
kilonewton (kN)
=
=
=
=
inch
foot
yard
mile
X 2.54
X 0.305
X 0.914
X 1.61
= cm
= m
= m
= km
=
=
=
=
=
=
inch2
inch2
foot2
yard2
acre
mile2
X 645
X 6.45
X 0.0929
X 0.836
X 0.405
X 2.59
= mm2
= cm2
= m2
= m2
= ha
= km2
= inch3
= inch3
= oz-liq
X 16.4
X 0.016
X 29.6
= quart
= gallon
= yard3
X 0.946
X 3.79
X 0.76
newton meter (N•m)
newton meter (N•m)
kilopascal (kPa)
kilopascal (kPa)
kilopascal (kPa)
megapascal (MPa)
Bar
kilowatt (kw)
kilowatt (kw)
watt (w)
= cm3
= l
= ml (1 ml = °C = (°F - 32) ÷ 1.8
= l
= l
= m3
cu. cm./min.
liters/min.
APPROXIMATE CONVERSION
TO GET
TO
BY
OR
BY
GET
MULTIPLY
CONV
NON-SI
CONV
SI*
FACTOR
UNIT
FACTOR
UNIT
FORCE (N = kg • m/s2)
X 0.225
= pound
X 4.45
= N
X 225
= pound
X 0.00445
= kN
TORQUE
X 8.9
= lb. in.
X 0.113
= N•m
X 0.74
= lb. ft.
X 1.36
= N•m
PRESSURE (Pa = N/m2)
X 4.0
= in. H2O
X 0.249
= kPa
X 0.30
= in. Hg
X 3.38
= kPa
X 0.145
= p.s.i.
X 6.89
= kPa
X 145
= p.s.i.
X 0.00689
= MPa
X 14.5
= p.s.i.
X .0689
= Bar
POWER (w = J/s)
X 1.34
= hp
X 0.746
= kw
X 0.948
= Btu/s
X 1.055
= kw
X 0.74
= ft. lb/s
X 1.36
= w
TEMPERATURE
°F = (°C X 1.8) + 32
FLOW
X .061
= cu. in/min.X 16.4 = cu. cm./min.
X .2642
= GPMX 3.785 = liters/min.
* System International (Modern Metric System)
= ounce
= pound
= ton (short)
X 28.3
X 0.454
X 0.907
= g
= kg
= t
Decimal & Millimeter Equivalents
1/64
1/32
3/64
1/16
5/64
3/32
7/64
1/8
9/64
5/32
11/64
3/16
13/64
7/32
15/64
1/4
17/64
9/32
19/64
5/16
21/64
11/32
DECIMALS
MILLIMETERS
.015625
.03125
.046875
.0625
.078125
.09375
.109375
.1250
.140625
.15625
.171875
.1875
.203125
.21875
.234375
.2500
.265625
.28125
.296875
.3125
.328125
.34375
— 0.397
— 0.794
— 1.191
— 1.588
— 1.984
— 2.381
— 2.778
— 3.175
— 3.572
— 3.969
— 4.366
— 4.763
— 5.159
— 5.556
— 5.953
— 6.350
— 6.747
— 7.144
— 7.541
— 7.938
— 8.334
— 8.731
23/64
3/8
25/64
13/32
27/64
7/16
29/64
15/32
31/64
1/2
33/64
17/32
35/64
9/16
37/64
19/32
39/64
5/8
41/64
21/32
43/64
11/16
DECIMALS
MILLIMETERS
.359375
.3750
.390625
.40625
.421875
.4375
.453125
.46875
.484375
.5000
.515625
.53125
.546875
.5625
.578125
.59375
.609375
.6250
.640625
.65625
.671875
.6875
— 9.128
— 9.525
— 9.922
— 10.319
— 10.716
— 11.113
— 11.509
— 11.906
— 12.303
— 12.700
— 13.097
— 13.494
— 13.891
— 14.288
— 14.684
— 15.081
— 15.478
— 15.875
— 16.272
— 16.669
— 17.066
— 17.463
14
45/64
23/32
47/64
3/4
49/64
25/32
51/64
13/16
53/64
27/32
55/64
7/8
57/64
29/32
59/64
15/16
61/64
31/32
63/64
1
DECIMALS
MILLIMETERS
.703125
.71875
.734375
.7500
.765625
.78125
.796875
.8125
.828125
.84375
.859375
.8750
.890625
.90625
.921875
.9375
.953125
.96875
.984375
1.000
— 17.859
— 18.256
— 18.653
— 19.050
— 19.447
— 19.844
— 20.241
— 20.638
— 21.034
— 21.431
— 21.828
— 22.225
— 22.622
— 23.019
— 23.416
— 23.813
— 24.209
— 24.606
— 25.003
— 25.400
1 mm = .03937"
.001" = .0254 mm