21. ANNEX
21.1 Unit conversion tables
The tables below will help you to convert units used in this product guide to other units. Where the conversion
factor is not accurate a suitable number of decimals have been used.
Table 21.2 Mass conversion factors
Multiply by
To
Convert from
2.205
lb
kg
35.274
oz
kg
Table 21.1 Length conversion factors
Multiply by
To
Convert from
0.0394
in
mm
0.00328
ft
mm
Table 21.4 Volume conversion factors
Multiply by
To
Convert from
61023.744
in
3
m
3
35.315
ft
3
m
3
219.969
Imperial gallon
m
3
264.172
US gallon
m
3
1000
l (litre)
m
3
Table 21.3 Pressure conversion factors
Multiply by
To
Convert from
0.145
psi (lbf/in
2
)
kPa
20.885
lbf/ft
2
kPa
4.015
inch H
2
O
kPa
0.335
foot H
2
O
kPa
101.972
mm H
2
O
kPa
0.01
bar
kPa
Table 21.6 Moment of inertia and torque conversion factors
Multiply by
To
Convert from
23.730
lbft
2
kgm
2
737.562
lbf ft
kNm
Table 21.5 Power conversion factors
Multiply by
To
Convert from
1.360
hp (metric)
kW
1.341
US hp
kW
Table 21.8 Flow conversion factors
Multiply by
To
Convert from
4.403
US gallon/min
m
3
/h (liquid)
0.586
ft
3
/min
m
3
/h (gas)
Table 21.7 Fuel consumption conversion factors
Multiply by
To
Convert from
0.736
g/hph
g/kWh
0.00162
lb/hph
g/kWh
Table 21.10 Density conversion factors
Multiply by
To
Convert from
0.00834
lb/US gallon
kg/m
3
0.01002
lb/Imperial gallon
kg/m
3
0.0624
lb/ft
3
kg/m
3
Table 21.9 Temperature conversion factors
Calculate
To
Convert from
F = 9/5 *C + 32
F
°C
K = C + 273.15
K
°C
21.1.1
Prefix
Table 21.11 The most common prefix multipliers
Factor
Symbol
Name
10
12
T
tera
10
9
G
giga
10
6
M
mega
10
3
k
kilo
10
-3
m
milli
10
-6
μ
micro
10
-9
n
nano
Product Guide Wärtsilä 34DF - 3/2012
167
Product Guide
21. ANNEX
