Conversion Charts

Linear

in. x 25.4 = mm
in. x 2.54 = cm
in. x 0.0254 = m
ft x 0.304801 = m
ft x 0.0003048 = km
yd x 0.914402 = m
yd x 0.0009144 = km
mi x 1.609 = km

mm x 0.03937 = in.
cm x 0.3937 = in.
m x 39.37 = in.
m x 3.280833 = ft
m x 1.09361 = yd
km x 3281 = ft
km x 1093.6 = yd
km x 0.6214 = mi

Weight

oz x 28.35 = g
oz x 0.02835 = kg
lbs x 0.45359 = kg
lbs x 0.00454 = mt
tn x 907.2 = kg
mt x 1.10231 = tn
lbs x 0.005 = tn
tn x 2000 = lbs
gt x 1.01605 = mt

g x 0.0353 = oz
kg x 35.27 = oz
kg x 2.20462 = lbs
kg x 0.001102 = tn
tn x .90719 = mt
mt x 2204.62 = lbs
kg x 0.001 = mt
mt x 1000 = kg
mt x .984221 = gt

tn = Net Ton
mt = Metric Ton
gt = Gross Ton

Area

in2 x 645.2 = mm2
in2 x 6.452 = cm2
ft2 x 0.0929 = m2
yd2 x 0.8361 = m2
mi2 x 2.59 = km2
ac x 0.4047 = ha

mm2 x 0.00155 = in2
cm2 x 0.155 = in2
m2 x 10.764 = ft2
m2  x 1.196 = yd 2
km2 x 0.3861 = mi2
ha x 2.471 = ac

Volume

in3 x 16.39 = cm3
in3 x 0.01639 = L
ft 3 x  0.02831 = m3
ft3 x 28.317 = L
yd3 x 0.7646 = m3
gal x 0.003786 = m3
gal x 3.7854 = L

cm3 x 0.06102 = in3
m3 x 35.31 = ft3
m3 x 1.308 = yd3
m3 x 264.2 = gal
L x 61.02 = in3
L x 0.03531 = ft3
L x 0.25642 = gal

Temperature

Fº - 32 x .556 = Cº

1.800 x Cº + 32 = Fº

Stretch-out for Rolled Cylinders

(dimension are in inches, additional plate may be required depending on type of roll and thickness utilized)

Outside Diameter – Thickness x 3.1416 = Length of Plate Required
Inside Diameter + Thickness x 3.1416 = Length of Plate Required

Charpy V-Notch Impact Forces

1 ft/lb = .7376 joules
1 joule = 1.3565 ft/lb

Yield (Reh) and Tensile (Rm)

ksi = Mpa / .006895
Mpa = ksi x .006895

Hardness

Thickness

Brinell Hardness
(Carbide ball)

Rockwell Hardness
(C scale)

Gauge to Decimal

Wall
(Gauge)

Decimal
Equivalent

202
217
235
250
285
320
360
400
450
543
600
700

15
18
22
25
30
34
39
43
48
54
57
63

3
4
5
6
7
8
9
10
11
12
13
14

0.2391
0.2242
0.2092
0.1943
0.1793
0.1644
0.1495
0.1345
0.1196
0.1046
0.0897
0.0747

Fraction to Decimal

3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
7/8
1
1 1/4
1 3/8
1 1/2
1 3/4

0.1875
0.2500
0.3125
0.3750
0.4375
0.5000
0.5625
0.6250
0.6875
0.7500
0.8750
1.0000
1.2500
1.3750
1.5000
1.7500

2
2 1/4
2 3/4
3
3 1/4
3 1/2
4
4 1/4
4 1/2
5
5 1/2
6
6 1/2
7
8

2.0000
2.2500
2.7500
3.0000
3.2500
3.5000
4.0000
4.2500
4.5000
5.0000
5.5000
6.0000
6.5000
7.0000
8.0000