Mass application rate.
Grams per Square Meter to Grams per Acre Converter — g/m2 to g/ac
Convert Gram per Square Meter (g/m2) to Gram per Acre (g/ac) using the exact conversion factor (1 gram per square meter = 4,046.856422 gram per acre). See the formula, worked examples, and conversion table.
Grams per Square Meter to Grams 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.
Mass application rate.
Result = input x 0.001 / 2.47105381e-7.
Mass Application Rate units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Grams per Square Meter to Grams per Acre
Gram per Square Meter and Gram 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 mass application rate units.
Formula
grams per acre = grams per square meter × 4046.8564224
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per square meter equals 0.001 base units, and 1 gram per acre equals 2.471054e-7 base units, so dividing one by the other gives the direct gram per square meter-to-gram per acre factor of 4046.8564224.
Simple example
1 g/m2 × 4046.856422 = 4,046.856422 g/ac
1 gram per square meter = 4,046.856422 grams per acre.
Real-world example
100 g/m2 × 4046.856422 = 404,685.6422 g/ac
100 grams per square meter = 404,685.6422 grams per acre.
Conversion table
| Gram per Square Meter (g/m2) | Gram per Acre (g/ac) |
|---|---|
| 1 g/m2 | 4,046.856422 g/ac |
| 5 g/m2 | 20,234.28211 g/ac |
| 10 g/m2 | 40,468.56422 g/ac |
| 50 g/m2 | 202,342.8211 g/ac |
| 100 g/m2 | 404,685.6422 g/ac |
| 500 g/m2 | 2,023,428.211 g/ac |
Reverse conversion: Gram per Acre to Gram per Square Meter
1 g/ac × 0.0002471053815 = 0.0002471054 g/m2
1 gram per acre = 0.0002471054 grams per square meter.
grams per square meter = grams per acre × 0.000247105381467
For a page dedicated to this direction, see Gram per Acre to Gram per Square Meter.
Understanding the Gram per Square Meter (g/m2)
Mass application rate.
Understanding the Gram per Acre (g/ac)
Mass application rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per acre are in 1 gram per square meter?
1 gram per square meter equals 4,046.856422 grams per acre, using the exact defined conversion factor rather than an estimate.
How do I convert gram per square meter to gram per acre?
Multiply the gram per square meter value by 4046.856422. The converter above does this instantly to whatever precision you set.
How do I convert gram per acre back to gram per square meter?
Use the reverse factor: 1 gram per acre equals 0.0002471054 grams per square meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per square meter?
Gram per Square Meter (g/m2) is a unit of agriculture.
What is a gram per acre?
Gram per Acre (g/ac) is a unit of agriculture.
Is the gram per square meter to gram per acre conversion exact?
Yes. Both gram per square meter and gram 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.