8153

• UCREFRP Catalog Number: 8153
• Author: Jacobs, e. L. W.
• Title: Editor
• USFW Year: Series
• USFW - Doc Type: 1989
• Copyright Material: YES

Conversion Factors for SI and non-SI Units
To convert Column 1 To convert Column 2
into Column 2, into Column 1,
multiply by Column 1 SI Unit Column 2 non-SI Unit mul~iply by
Temperature
1.00 (K - 273) Kelvin, K Celsius, °C 1.00 (°C + 273)
(9l5 °C) + 32 Celsius, °C Fahrenheit, °F 5l9 (°F - 32)
Energy, Work, Quantity of Heat
9.52 x 10 -4 joule, J British thermal unit, Btu 1.05 x 103
0.239 joule, J calorie, cai 4.19
10~ joule, J erg 10-~
0.735 joule, J foot-pound 1.36
2.387 x 10 -5 joule per square meter, J m -2 calorie per square centimeter (langley) 4.19 x 104
105 newton, N dyne 10-5
1.43 x 10-3 watt per square meter, W m-2 calorie per square centimeter 698
minute (irradiance), cal cm _ z min -1
Transpiration and Photosynthesis
3.60 x 10 -2 milligram per square meter second, gram per square decimeter hour, 27.8
mg m_2 s-1 g dm-2 h-1
5.56 x 10 -3 milligram (HZO) per square meter
- 2 micromole (H20) per square centi- 180
second, mg m
s meter second, µm01 cm - z s -1
10-4 milligram per square meter second, milligram per square centimeter 104
mg m - a s -1 second, mg cm - z s -1
35.97 milligram per square meter second,
-z
-1 milligram ~er square decimeter hour, 2.78 x 10-Z
mgm
s mg dm- h-1
Plane Angle
57.3 radian, rad degrees (angle-, 1.75 x 10-2
x