Units of Measure
Fertilizer Conversions:
Lb P2O5 x 0.437 = Lb P
Lb P x 2.29 = Lb P2O5
Lb K2O x 0.83 = Lb K
Lb K x 1.2 = Lb K2O
Area Conversions:
1 square inch = 6.4516 cm2
1 square foot = 144 square inches = 929.03 cm2 = 0.0929 m2
1,000 square feet = 92.9 m2
1 square yard = 9 square feet
1 acre = 43,560 square feet = 4,840 square yards = 0.4047 hectares
1 hectare = 2.471 acres
Weight Conversions:
1 ounce = 28.35 grams
1 pound = 16 ounces = 453.59 grams = 0.45359 kilogram
1 ton (short ton) = 2,000 pounds = 907.18 kilogram
1 gram = 1,000 milligrams = 0.035274 ounce
1 kilogram = 1,000 grams = 2.2046 pounds
1 short ton = 2,000 pounds = 0.907 metric ton
1 long ton = 2,240 pounds = 1.016 metric ton
Application Rate Conversions:
1 pound per acre = 1.121 kilogram per hectare
1 pound per 1,000 square feet = 43.56 pounds per acre = 48.8241 kilogram per hectare = 0.488 grams per square meter
1 ounce per 1,000 square feet = 2.7225 pounds per acre = 3.0515 kilogram per hectare
1 gram per square meter = 10 kilogram per hectare = 3.2771 ounces per 1,000 square feet = 8.9218 pounds per acre
1 gallon per acre = 9.3537 Liter per hectare
1 Liter per hectare = 0.1069 gallon per acre
1 gallon per 1,000 square feet = 43.56 gallons per acre = 407.45 Liters per hectare
Cation Exchange Capacity Conversions:
1 milliequivalent per 100 grams = 1 centimole per kilogram
Time (seconds) required to cover a specific distance to obtain a desired speed (mph):
Feet per Minute
| Time Required (seconds) to Travel: |
| Desired mph |
Feet per Minute |
100 Feet |
200 Feet |
300 Feet |
| 2.0 |
176 |
34 |
68 |
102 |
| 2.5 |
220 |
27 |
54 |
81 |
| 3.0 |
264 |
23 |
45 |
68 |
| 3.5 |
308 |
20 |
43 |
58 |
| 4.0 |
352 |
17 |
39 |
51 |
| 4.5 |
395 |
15 |
30 |
45 |
| 5.0 |
440 |
14 |
27 |
41 |
| 6.0 |
528 |
- |
23 |
34 |
| 7.0 |
616 |
- |
19 |
29 |
| 8.0 |
704 |
- |
17 |
26 |
| 9.0 |
792 |
- |
15 |
23 |
| |
Temperature Conversions:
Degrees Centigrade = (Degrees Fahrenheit – 32) x 0.555555555556
Degrees Fahrenheit = (Degrees Centigrade x 0.555555555556) + 32
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