Liquid application rate.
Gallons per Square mile to Gallons per Acre Converter — gal/mi2 to gal/ac
Convert Gallon per Square mile (gal/mi2) to Gallon per Acre (gal/ac) using the exact conversion factor (1 gallon per square mile = 0.0015625 gallon per acre). See the formula, worked examples, and conversion table.
Gallons per Square mile 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 1.46155566e-9 / 9.35395623e-7.
Liquid Application Rate units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Gallons per Square mile to Gallons per Acre
Gallon per Square mile 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 mile × 0.0015625
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per square mile equals 1.461556e-9 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 mile-to-gallon per acre factor of 0.0015625.
Simple example
1 gal/mi2 × 0.0015625 = 0.0015625 gal/ac
1 gallon per square mile = 0.0015625 gallons per acre.
Real-world example
100 gal/mi2 × 0.0015625 = 0.15625 gal/ac
100 gallons per square mile = 0.15625 gallons per acre.
Conversion table
| Gallon per Square mile (gal/mi2) | Gallon per Acre (gal/ac) |
|---|---|
| 1 gal/mi2 | 0.0015625 gal/ac |
| 5 gal/mi2 | 0.0078125 gal/ac |
| 10 gal/mi2 | 0.015625 gal/ac |
| 50 gal/mi2 | 0.078125 gal/ac |
| 100 gal/mi2 | 0.15625 gal/ac |
| 500 gal/mi2 | 0.78125 gal/ac |
Reverse conversion: Gallon per Acre to Gallon per Square mile
0.0015625 gal/ac × 640 = 1 gal/mi2
0.0015625 gallons per acre = 1 gallon per square mile.
gallons per square mile = gallons per acre × 640
For a page dedicated to this direction, see Gallon per Acre to Gallon per Square mile.
Understanding the Gallon per Square mile (gal/mi2)
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 mile?
1 gallon per square mile equals 0.0015625 gallons per acre, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per square mile to gallon per acre?
Multiply the gallon per square mile value by 0.0015625. The converter above does this instantly to whatever precision you set.
How do I convert gallon per acre back to gallon per square mile?
Use the reverse factor: 1 gallon per acre equals 640 gallons per square mile. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per square mile?
Gallon per Square mile (gal/mi2) 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 mile to gallon per acre conversion exact?
Yes. Both gallon per square mile and gallon per acre are defined by fixed standards rather than physical artifacts, so the factor of 0.0015625 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.