Environmental Engineering Reference
In-Depth Information
TABLE 2.6
Alphabetical List of Conversion Factors
Factor
Metric (SI) or English Conversions
°C
(5/9)[(°F) - 32°]
°F
(9/5)[(°C) + 32°]
1°C (expressed as an interval)
33.8°F = (9/5)(°F)
1.8°R (degrees Rankine)
1.0 K (degrees Kelvin)
1°F (expressed as an interval)
0.556°C = (5/9)°C
1.0°R (degrees Rankine)
0.556 K (degrees Kelvin)
1 atm (atmosphere)
1.013 bars
10.133 N/cm
2
(newtons/square centimeter)
33.90 ft of H
2
O (feet of water)
101.325 kPa (kilopascals)
1,013.25 mbar (millibars)
psia (pounds/square inch absolute)
760 torr
760 mmHg (millimeters of mercury)
1 bar
0.987 atm (atmosphere)
1 × 10
6
dynes/cm
2
(dynes/square centimeter)
33.45 ft of H
2
O (feet of water)
1 × 10
5
Pa (pascals)
750.06 torr
750.06 mmHg (millimeters of mercury)
1 Bq (becquerel)
1 radioactive disintegration/second
2.7 × 10
-11
Ci (curie)
2.7 × 10
-8
mCi (millicurie)
1 Btu (British thermal unit)
252 cal (calories)
1055.06 J (joules)
10.41 L-atm (liter-atmospheres)
0.293 Wh (watt-hour)
1 cal (calorie)
3.97 × 10
-3
Btu (British thermal unit)
4.18 J (joules)
0.0413 L-atm (liter-atmospheres)
1.163 × 10
-3
Wh (watt-hour)
1 Ci (curie)
3.7 × 10
10
radioactive disintegrations/second
3.7 × 10
10
Bq (becquerels)
1000 mCi (millicuries)
1 cm (centimeter)
0.0328 ft (foot)
0.394 in. (inch)
10,000 µm (microns, micrometers)
100,000,000 Å = 10
8
Å (Ångstroms)
1 cm
2
(square centimeter)
1.076 × 10
-3
ft
2
(square feet)
0.155 in.
2
(square inch)
1 × 10
-4
m
2
(square meter)
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