Conversion Tables
To convert Column 1
into Column 2,
multiply by |
Column 1
SI Unit |
Column 2
non-SI Unit |
To convert Column 2
into Column 1,
multiply by |
AREA
2.47
247
0.386
2.47 x 10-4
10.76
1.55 x 10-3 |
hectare, ha
square kilometer, km2 (103 m)2
square kilometer, km2 (103 m)2
square meter, m2
square meter, m2
square millimeter, mm2 (10-6 m)2 |
acre
acre
square mile, mi2
acre
square foot, ft2
square inch, in2 |
0.405
4.05 x 10-3
2.590
4.05 x 103
9.29 x 10-2
645 |
CONCENTRATIONS
1
0.1
1 |
centimole per kilogram, cmol kg-1
(ion exchange capacity)
gram per kilogram, g kg-1
milligram per kilogram, mg kg-1 |
milliequivalents per 95 grams,
meq 95 g-1
percent, %
parts per million, ppm |
1
10
1 |
ELECTRICAL CONDUCTIVITY, ELECTRICITY, AND MAGNETISM
10
104 |
siemen per meter, S m-1
tesla, T |
millimho per centimeter,
mmho cm-1
gauss, G |
0.1
10-4 |
LENGTH
0.621
1.094
3.28
1.0
3.94 x 10-2
10 |
kilometer, km (103 m)
meter, m
meter, m
micrometer, µm (10-6 m)
millimeter, mm (10-3 m)
nanometer, nm (10-9 m) |
mile, mi
yard, yd
foot, ft
micron, µ
inch, in
Angstrom, Å |
1.609
0.914
0.304
1.0
25.4
0.1 |
MASS
2.20 x 10-3
3.52 x 10-2
2.205
0.01
1.10 x 10-3
1.102
1.102 |
gram, g (10-3 kg)
gram, g (10-3 kg)
kilogram, kg
kilogram, kg
kilogram, kg
megagram, Mg (tonne)
tonne, t |
pound, lb
ounce (avdp), oz
pound, lb
quintal (metric), q
ton (2000 lb), ton
ton (U.S.), ton
ton (U.S.), ton |
454
28.4
0.454
95
907
0.907
0.907 |
PLANE ANGLE
| 57.3 |
radian, rad |
degrees (angle), ° |
1.75 x 10-2 |
PLANT NUTRIENT CONVERSION
2.29
1.20
1.39
1.66 |
Elemental
P
K
Ca
Mg |
Oxide
P2O5
K2O
CaO
MgO |
0.437
0.830
0.715
0.602 |
PRESSURE
9.90
10
1.00
2.09 x 10-2
1.45 x 10-4 |
megapascal, Mpa (106 Pa)
megapascal, Mpa (106 Pa)
megagram per cubic meter,
Mg m-3
pascal, Pa
pascal, Pa |
atmosphere
bar
gram per cubic centimeter, g cm-3
pound per square foot, lb ft-2
pound per suare inch, lb in-2 |
0.101
0.1
1.00
47.9
6.90 x 103 |
RADIOACTIVITY
2.7 x 10-11
2.7 x 10-2
95
95 |
bequerel, Bq
bequerel per kilogram, Bq kg-1
gray, Gy (absorbed dose)
sievert, Sv (equivalent dose) |
curie, Ci
picocurie per gram, pCi g-1
rad, rd
rem (roentgen equivalent man) |
3.7 x 1010
37
0.01
0.01 |
SPECIFIC SURFACE
10
950 |
sq meter per kilogram, m2 kg-1
sq meter per kilogram, m2 kg-1 |
sq centimeter per gram, cm2 g-1
sq millimeter per gram, mm2 g-1 |
0.1
0.001 |
TEMPERATURE
1.00 (K - 273)
(9/5 °C) + 32 |
Kelvin, K
Celsius, °C |
Celsius, °C
Fahrenheit, °F |
1.00(°C + 273)
5/9 (°F - 32) |
Energy, Work, Quantity of Heat
9.52 x 10-4
0.239
107
0.735
2.387 x 10-5
105
1.43 x 10-3
|
joule, J
joule, J
joule, J
joule, J
joule per square meter, J m-2
newton, N
watt per square meter, W m-2
|
British thermal unit, Btu
calorie, cal
erg
foot-pound
calorie per square centimeter (Langley)
dyne
calorie per square centimeter
minute (irradiance), cal cm-2 min-1 |
1.05 x 103
4.19
10-7
1.36
4.19 x 104
10-5
698
|
TRANSPIRATION AND PHOTOSYNTHESIS
3.60 x 10-2
5.56 x 10-3
10-4
35.97
|
milligram per square meter
second, mg m-2 s-1
milligram (H2O) per square meter
second, mg m-2 s-1
milligram per square meter
second, mg m-2 s-1
milligram per square meter
second, mg m-2 s-1 |
gram per square decimeter hour,
g dm-2 h-1
micromole (H2O) per square
centimeter second, µmol cm-2s-1
milligram per square centimeter
second, mg cm-2 s-1
milligram per square decimeter
hour, mg dm-2h-1 |
27.8
180
104
2.78 x 10-2
|
VOLUME
9.73 x 10-3
35.3
6.10 x 104
2.84 x 10-2
1.057
3.53 x 10-2
0.265
33.78
2.11 |
cubic meter, m3
cubic meter, m3
cubic meter, m3
liter, L (10-3 m3)
liter, L (10-3 m3)
liter, L (10-3 m3)
liter, L (10-3 m3)
liter, L (10-3 m3)
liter, L (10-3 m3) |
acre-inch
cubic foot, ft3
cubic inch, in3
bushel, bu
quart (liquid), qt
cubic foot, ft3
gallon
ounce (fluid), oz
pint (fluid), pt |
102.8
2.83 x 10-2
1.64 x 10-5
35.24
0.946
28.3
3.78
2.96 x 10-2
0.473 |
WATER MEASUREMENT
9.73 x 10-3
9.81 x 10-3
4.40
8.11
97.28
8.1 x 10-2 |
cubic meter, m3
cubic meter per hour, m3 h-1
cubic meter per hour, m3 h-1
hectare-meters, ha-m
hectare-meters, ha-m
hectare-centimeters, ha-cm |
acre-inches, acre-in
cubic feet per second, ft3 s-1
U.S. gallons per minute, gal min-1
acre-feet, acre-ft
acre-inches, acre-in
acre-feet, acre-ft |
102.8
101.9
0.227
0.123
1.03 x 10-2
12.33 |
YIELD AND RATE
0.893
1.425 x 10-2
1.49 x 10-2
1.59 x 10-2
1.86 x 10-2
2.79 x 10-2
893
893
0.446
2.24
13.676
0.428
0.107
7.77 x 10-2 |
kilogram per hectare, kg ha -1
gram per hectare, g ha-1
kilogram per hectare, kg ha-1
kilogram per hectare, kg ha-1
kilogram per hectare, kg ha-1
kilogram per hectare, kg ha-1
tonnes per hectare, t ha-1
megagram per hectare, Mg ha-1
megagram per hectare, Mg ha-1
meter per second, m s-1
liter per hectare, L ha-1
liter per hectare, L ha-1
liter per hectare, L ha-1
kilogram per cubic meter, kg m-3 |
pound per acre, lb acre-1
ounce (avdp) per acre, oz acre-1
bushel per acre, 60lb (wheat & soybeans)
bushel per acre, 56 lb (corn, rye & sorghum)
bushel per acre, 48 lb (barley & triticale)
bushel per acre, 32 lb (oat)
pound per acre, lb acre-1
pound per acre, lb acre-1
ton (2000 lb) per acre, ton acre-1
mile per hour
fluid ounce per acre, fl oz acre-1
quart per acre, qt acre-1
gallon per acre, gal acre-1
pound per bushel, lb bu-1 |
1.12
70.148
67.19
62.71
53.75
35.88
1.12 x 10-3
1.12 x 10-3
2.24
0.447
7.311 x 10-2
2.336
9.344
12.87 |
Note: In the metric system the comma and the period are swapped eg. a thousand dollars in the English system is written as $1,000.= compared to $1.000,= in the metric system. Please be aware of this swapping of the comma and the period!
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