Liquid application rate.
Gallons per Square Meter to Gallons per Acre Converter — gal/m2 to gal/ac
Convert Gallon per Square Meter (gal/m2) to Gallon per Acre (gal/ac) using the exact conversion factor (1 gallon per square meter = 4,046.856422 gallon per acre). See the formula, worked examples, and conversion table.
Gallons per Square Meter 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 0.003785411784 / 9.35395623e-7.
Liquid Application Rate units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Gallons per Square Meter to Gallons per Acre
Gallon per Square Meter 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 meter × 4046.8564224
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per square meter equals 0.003785411784 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 meter-to-gallon per acre factor of 4046.8564224.
Simple example
1 gal/m2 × 4046.856422 = 4,046.856422 gal/ac
1 gallon per square meter = 4,046.856422 gallons per acre.
Real-world example
100 gal/m2 × 4046.856422 = 404,685.6422 gal/ac
100 gallons per square meter = 404,685.6422 gallons per acre.
Conversion table
| Gallon per Square Meter (gal/m2) | Gallon per Acre (gal/ac) |
|---|---|
| 1 gal/m2 | 4,046.856422 gal/ac |
| 5 gal/m2 | 20,234.28211 gal/ac |
| 10 gal/m2 | 40,468.56422 gal/ac |
| 50 gal/m2 | 202,342.8211 gal/ac |
| 100 gal/m2 | 404,685.6422 gal/ac |
| 500 gal/m2 | 2,023,428.211 gal/ac |
Reverse conversion: Gallon per Acre to Gallon per Square Meter
1 gal/ac × 0.0002471053815 = 0.0002471054 gal/m2
1 gallon per acre = 0.0002471054 gallons per square meter.
gallons per square meter = gallons per acre × 0.000247105381467
For a page dedicated to this direction, see Gallon per Acre to Gallon per Square Meter.
Understanding the Gallon per Square Meter (gal/m2)
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 meter?
1 gallon per square meter equals 4,046.856422 gallons per acre, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per square meter to gallon per acre?
Multiply the gallon per square meter value by 4046.856422. The converter above does this instantly to whatever precision you set.
How do I convert gallon per acre back to gallon per square meter?
Use the reverse factor: 1 gallon per acre equals 0.0002471054 gallons per square meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per square meter?
Gallon per Square Meter (gal/m2) 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 meter to gallon per acre conversion exact?
Yes. Both gallon per square meter and gallon per acre are defined by fixed standards rather than physical artifacts, so the factor of 4046.856422 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.