PRESSURE

FROM

atm (atmosphere)
atm
atm

bar
bar
bar

MPa (megapascal)*
MPa
MPa

PSI (pounds / square inch)
PSI
PSI

kp/cm2 (kilopound / cm2)
kp/cm2
kp/cm2

TO

bar
MPa
PSI

atm
MPa
PSI

atm
bar
PSI

atm
bar
MPa

bar
MPa
PSI

MULTIPLY BY

1.01325
0.10132
14.696

0.98692
0.1
14.504

9.8692
10
145.0

0.068
0.0689
0.00689

0.981
0.0981
14.223

EXAMPLE

1.1 atm x 1.01325 = 1.115 bar
1.1 atm x 0.10132 = 0.111 MPa
1.1 atm x 14.696 = 16.166 PSI

10 bar x 0.98692 = 9.8692 atm
10 bar x 0.1 = 1.0 MPa
10 bar x 14.504 = 145 PSI

10 MPa x 9.8692 = 98.692 atm
10 MPa x 10 = 100 bar
10 MPa x 145.0 = 1450 PSI

100 PSI x 0.068 = 6.80 atm
100 PSI x 0.0689 = 6.89 bar
100 PSI x 0.00689 = 0.689 MPa

10 kp/cm2 x 0.981 = 9.81 bar
10 kp/cm2 x 0.0981 = 0.981 MPa
10 kp/cm2 x 14.223 = 142.2 PSI

FLOW

FROM

CFM (cubic feet / minute)
CFM
CFM

l/min (liter / minute)
l/min
l/min

l/s (liter / second)*
l/s
l/s

m3/h (cubic meter / hour)
m3/h
m3/h

GPM uk

GPM us (gallon/minute)

TO

l/min
l/s
m3/h

CFM
l/s
m3/h

CFM
l/min
m3/h

CFM
l/min
l/s

l/min

l/min

MULTIPLY BY

28.32
0.472
1.699

0.0353
0.0167
0.06

2.119
60
3,6

0.5885
16.667
0.2777

4.5461

3.7854

EXAMPLE

100 CFM x 28.32 = 2832 l/min
100 CFM x 0.472 = 47.2 l/s
100 CFM x 1.699 = 169.9 m3/h

10 m3/h x 0.5885 = 5.885 CFM
10 m3/h x 16.667 = 166.7 l/min
10 m3/h x 0.2777 = 2.777 l/s

10 l/s x 2.119 = 21.2 CFM
10 l/s x 60 = 600 l/min
10 l/s x 3,6 = 36 m3/h

100 l/min x 0.0353 = 3.5 CFM
100 l/min x 0.0167 = 1.7 l/s
100 l/min x 0.06 = 6 m3/h

10 GPM uk x 4.5461 = 45.46 l/min

10 GPM us x 3.7854 = 37.85 l/min

VOLUME

FROM

ft3 (cubic foot)
ft3
ft3
ft3

gl UK (gallon UK) 
gl UK
gl UK
gl UK

gl U.S. (gallon U.S.)
gl U.S.
gl U.S.
gl U.S.

l (liter)
l
l
l

m3 (cubic meter)*
m3
m3
m3

TO

gl UK
gl U.S.
l
m3

ft3
gl U.S.
l
m3

ft3
gl UK
l
m3

ft3
gl UK
gl U.S.
m3

ft3
gl UK
gl U.S.
l

MULTIPLY BY

6.228
7.48
28.32
0.0283

0.1605 
1.2009
4.546
0.0045

0.1336 
0.8326
3.785
0.0037 

0.0353
0.220
0.264
0.001

35.3
219.96
264.17
1000

EXAMPLE

10 ft3 x 6.228 = 62.28 gl UK
10 ft3 x 7.48 = 74.8 gl U.S.
10 ft3 x 28.32 = 283.2 l
10 ft3 x 0.0283 = 0.283 m3

10 gl UK x 0.1605 = 1.605 ft3
10 gl UK x 1.2009 = 12.009 gl U.S.
10 gl UK x 4.546 = 45.46 l
10 gl UK x 0.0045 = 0.045 m3

100 l x 0.0353 = 3.53 ft3
100 l x 0.220 = 22.0 gl UK
100 l x 0.264 = 26.4 gl U.S.
100 l x 0.001 = 0.1 m3

10 gl U.S. x 0.1336 = ft3
10 gl U.S. x 0.8326 = 8.326 gl UK
10 gl U.S. x 3.785 = 37.85 l
10 gl U.S. x 0.0037 = 0.037 m3

10 m3 x 35.3 = 353 ft3
10 m3 x 219.96 = 2199.6 gl UK
10 m3 x 264.17 = 2641.7 gl U.S.
10 m3 x 1000 = 10 000 l

FORCE

FROM

lbf (pund force)
lbf

kp (kilogram force)
kp

N (newton)*
N

TO

kp
N

lbf
N

lbf
kp

MULTIPLY BY

0.454
4.448

2.205
9.806

0.2248
0.1020

EXAMPLE

10 lbf x 0.454 = 4.54 kp
10 lbf x 4.448 = 44.48 N

10 kp x 2.204 = 22.05 lbf
10 kp x 9.806 = 98.06 N

10 N x 0.2248 = 2.25 lbf
10 N x 0.1020 = 1.02 kp

LENGTH

FROM

ft (foot)
ft
ft

inch
inch
inch

m (meter)*
m
m

mm (millimeter)
mm
mm

TO

inch
m
mm

ft
m
mm

ft
inch
mm

ft
inch
m

MULTIPLY BY

12
0.3048
304.8

0.0833
0.0254
25.4

3.28083
39.3699
1000

0.00328
0.0393
0.001

EXAMPLE

10 ft x 12 = 120 inch
10 ft x 0.3048 = 3.048 ft
10 ft x 304.8 = 3048 mm

10 inch x 0.0833 = 0.833 ft
10 inch x 0.0254 = 0.254 m
10 inch x 25.4 = 254 mm

10 m x 3.28083 = 32.8083 ft
10 m x 39.3699 = 393.699 inch
10 m x 1000 = 10 000 mm

10 mm x 0.00328 = 0.0328 ft
10 mm x 0.0393 = 0.393 inch
10 mm x 0.001 = 0.01 m

MASS

FROM

g (gram)
g
g

kg (kilogram)*
kg
kg

lb (pound)
lb
lb

oz (ounze)
oz
oz

TO

kg
lb
oz

g
lb
oz

g
kg
oz

g
kg
lb

MULTIPLY BY

0.001
0.0022
0.0352

1000
2.205
35.273

453.9
0.4539
16

28.349
0.0283
0.0625

EXAMPLE

10 g x 0.001 = 0.01 kg
10 g x 0.0022 = 0.022 lb
10 g x 0.0352 = 0.352 oz

10 kg x 1000 = 10 000 g
10 kg x 2.205 = 22.05 lb
10 kg x 35.273 = 352.73 oz

10 lb x 453.9 = 4535 g
10 lb x 0.4539 = 4.535 kg
10 lb x 16 = 160 oz

10 oz x 28.349 = 283.49 g
10 oz x 0.0283 = 0.283 kg
10 oz x 0.0625 = 0.625 lb

TORQUE

FROM

kpm (kilo pound meter)
kpm

lbfft (pound force foot)
lbfft

Nm (newton meter)
Nm

TO

lbfft
Nm

Nm
kpm

kpm
lbfft

MULTIPLY BY

7.233
9.81

1.356
0.1383

0.1020
0.7376

EXAMPLE

10 lbff x 1.356 = 13.56 Nm
10 lbff x 0.1383 = 1.38 kpm

10 kpm x 7.233 = 72.33 lbfft
10 kpm x 9.81 = 9.81 Nm

10 Nm x 0.1020 = 1.02 kpm
10 Nm x 0.7376 = 7.38 lbfft

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