Mass application rate.
Grams per Square Kilometer to Metric tons per Square Meter Converter — g/km2 to t/m2
Convert Gram per Square Kilometer (g/km2) to Metric ton per Square Meter (t/m2) using the exact conversion factor (1 gram per square kilometer = 1e-12 metric ton per square meter). See the formula, worked examples, and conversion table.
Grams per Square Kilometer to Metric tons per Square Meter 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 1e-9 / 1000.
Mass Application Rate units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Grams per Square Kilometer to Metric tons per Square Meter
Gram per Square Kilometer and Metric ton per Square Meter 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
metric tons per square meter = grams per square kilometer × 1e-12
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per square kilometer equals 1e-9 base units, and 1 metric ton per square meter equals 1000 base units, so dividing one by the other gives the direct gram per square kilometer-to-metric ton per square meter factor of 1e-12.
Simple example
1 g/km2 × 1e-12 = 1e-12 t/m2
1 gram per square kilometer = 1e-12 metric tons per square meter.
Real-world example
100 g/km2 × 1e-12 = 1e-10 t/m2
100 grams per square kilometer = 1e-10 metric tons per square meter.
Conversion table
| Gram per Square Kilometer (g/km2) | Metric ton per Square Meter (t/m2) |
|---|---|
| 1 g/km2 | 1e-12 t/m2 |
| 5 g/km2 | 5e-12 t/m2 |
| 10 g/km2 | 1e-11 t/m2 |
| 50 g/km2 | 5e-11 t/m2 |
| 100 g/km2 | 1e-10 t/m2 |
| 500 g/km2 | 5e-10 t/m2 |
Reverse conversion: Metric ton per Square Meter to Gram per Square Kilometer
1e-12 t/m2 × 1000000000000 = 1 g/km2
1e-12 metric tons per square meter = 1 gram per square kilometer.
grams per square kilometer = metric tons per square meter × 1000000000000
For a page dedicated to this direction, see Metric ton per Square Meter to Gram per Square Kilometer.
Understanding the Gram per Square Kilometer (g/km2)
Mass application rate.
Understanding the Metric ton per Square Meter (t/m2)
Mass application rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many metric tons per square meter are in 1 gram per square kilometer?
1 gram per square kilometer equals 1e-12 metric tons per square meter, using the exact defined conversion factor rather than an estimate.
How do I convert gram per square kilometer to metric ton per square meter?
Multiply the gram per square kilometer value by 1e-12. The converter above does this instantly to whatever precision you set.
How do I convert metric ton per square meter back to gram per square kilometer?
Use the reverse factor: 1 metric ton per square meter equals 1,000,000,000,000 grams per square kilometer. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per square kilometer?
Gram per Square Kilometer (g/km2) is a unit of agriculture.
What is a metric ton per square meter?
Metric ton per Square Meter (t/m2) is a unit of agriculture.
Is the gram per square kilometer to metric ton per square meter conversion exact?
Yes. Both gram per square kilometer and metric ton per square meter are defined by fixed standards rather than physical artifacts, so the factor of 1e-12 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.