Liquid application rate.
Gallons per Square foot to Gallons per Acre Converter — gal/ft2 to gal/ac
Convert Gallon per Square foot (gal/ft2) to Gallon per Acre (gal/ac) using the exact conversion factor (1 gallon per square foot = 43,560 gallon per acre). See the formula, worked examples, and conversion table.
Gallons per Square foot to Gallons per Acre converter
Converter
Agriculture Converter
Convert acres, hectares, yield, seed, fertilizer, irrigation, and application-rate units.
Context values
Some unit families need one extra value for a physically accurate result.
Liquid application rate.
Result = input x 0.04074583333 / 9.35395623e-7.
Liquid Application Rate units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Gallons per Square foot to Gallons per Acre
Gallon per Square foot and Gallon per Acre both measure a farming-related quantity — a land area or an application/yield rate per unit area — used to report crop yields, calculate how much fertilizer or seed a field needs, and plan irrigation. Both are liquid application rate units.
Formula
gallons per acre = gallons per square foot × 43560
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per square foot equals 0.0407458333333 base units, and 1 gallon per acre equals 9.353956e-7 base units, so dividing one by the other gives the direct gallon per square foot-to-gallon per acre factor of 43560.
Simple example
1 gal/ft2 × 43560 = 43,560 gal/ac
1 gallon per square foot = 43,560 gallons per acre.
Real-world example
100 gal/ft2 × 43560 = 4,356,000 gal/ac
100 gallons per square foot = 4,356,000 gallons per acre.
Conversion table
| Gallon per Square foot (gal/ft2) | Gallon per Acre (gal/ac) |
|---|---|
| 1 gal/ft2 | 43,560 gal/ac |
| 5 gal/ft2 | 217,800 gal/ac |
| 10 gal/ft2 | 435,600 gal/ac |
| 50 gal/ft2 | 2,178,000 gal/ac |
| 100 gal/ft2 | 4,356,000 gal/ac |
| 500 gal/ft2 | 21,780,000 gal/ac |
Reverse conversion: Gallon per Acre to Gallon per Square foot
1 gal/ac × 0.00002295684114 = 0.0000229568 gal/ft2
1 gallon per acre = 0.0000229568 gallons per square foot.
gallons per square foot = gallons per acre × 0.0000229568411387
For a page dedicated to this direction, see Gallon per Acre to Gallon per Square foot.
Understanding the Gallon per Square foot (gal/ft2)
Liquid application rate.
Understanding the Gallon per Acre (gal/ac)
Liquid application rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallons per acre are in 1 gallon per square foot?
1 gallon per square foot equals 43,560 gallons per acre, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per square foot to gallon per acre?
Multiply the gallon per square foot value by 43560. The converter above does this instantly to whatever precision you set.
How do I convert gallon per acre back to gallon per square foot?
Use the reverse factor: 1 gallon per acre equals 0.0000229568 gallons per square foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per square foot?
Gallon per Square foot (gal/ft2) is a unit of agriculture.
What is a gallon per acre?
Gallon per Acre (gal/ac) is a unit of agriculture.
Is the gallon per square foot to gallon per acre conversion exact?
Yes. Both gallon per square foot and gallon per acre are defined by fixed standards rather than physical artifacts, so the factor of 43560 used above is exact to as many digits as you choose to display.
What's the difference between a yield rate and an application rate?
A yield rate describes how much of a crop is harvested per unit of land area (for example, tonnes per hectare). An application rate describes how much of an input like fertilizer or seed is applied per unit of land area. Both are commonly expressed using the same kind of mass-per-area units.