Turf unit converter (lb per 1,000 ft² to kg/ha and more)
Labels, research and soil reports don't all use the same units. A turf unit converter changes a rate from one unit to another — lb per 1,000 ft² to kg per hectare, fl oz per 1,000 ft² to litres per hectare, ppm to lb per acre-foot — both ways.
Free to use. No sign-up, no email.
Conversion factor
- 1 lb per 1,000 ft²
- 48.8243 kg per hectare
- 1 kg per hectare
- 0.0205 lb per 1,000 ft²
Always follow the product label.
The factors behind the turf unit converter
lb per 1,000 ft² → kg per ha
× 0.45359237 kg ÷ 92.90304 m² × 10,000 = × 48.82
lb per acre → kg per ha
× 0.45359237 kg ÷ 4,046.856 m² × 10,000 = × 1.121
lb per 1,000 ft² → lb per acre
× 43.56
fl oz per 1,000 ft² → L per ha
1 fl oz = 3.785411784 L ÷ 128; ÷ 92.90304 m² × 10,000 = × 3.183
gallons per acre → L per ha
× 3.785411784 L ÷ 0.4046856 ha = × 9.354
Water
ppm = mg/L · ppm × 2.72 = lb per acre-foot of water
Where the numbers come from
- Pound, foot and acre: 1 lb = 453.59237 g, 1 ft = 0.3048 m, 1 acre = 43,560 ft² (all exact). NIST Handbook 44 (2024), Appendix C
- US gallon and fluid ounce: 1 gallon = 3.785411784 L (exact) = 128 fluid ounces. NIST Handbook 44 (2024), Appendix C
- Water quality units: ppm = mg/L; ppm × 2.72 = lb per acre-foot of water. UC Cooperative Extension, “Irrigation Water Analysis Guidelines”
- Cross-check: 1.0 lb N per 1,000 ft² is written as 49 kg/ha. UF/IFAS, “Turfgrass Nutrition: Soil Testing and Interpretation”
Worked example (the converter opens with this)
- 1 lb per 1,000 ft² × 48.82 = 48.82 kg per hectare.
- 10 ppm in irrigation water × 2.72 = 27.2 lb per acre-foot.
Cross-checks: UF/IFAS writes 1.0 lb N per 1,000 ft² as 49 kg/ha, and the UC guide's example is 10 ppm = 27.2 lb per acre-foot.
Questions about the turf unit converter
How do I convert lb per 1,000 ft² to kg per hectare?
Multiply pounds per 1,000 square feet by 48.82 to get kilograms per hectare; 1 lb per 1,000 ft² is 48.82 kg/ha.
Is ppm the same as mg/L?
For irrigation water, parts per million (ppm) and milligrams per litre (mg/L) are treated as the same number.
Which gallon and fluid ounce does the turf unit converter use?
The turf unit converter uses the US gallon of 3.785411784 litres and the US fluid ounce, which is 1/128 of a gallon.
Get this for your actual course
Cortex keeps every application on the map of your course, so the rates you convert here end up in one record.
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