Mass application rate.
Metric tons per Square Meter to Milligrams per Square Kilometer Converter — t/m2 to mg/km2
Convert Metric ton per Square Meter (t/m2) to Milligram per Square Kilometer (mg/km2) using the exact conversion factor (1 metric ton per square meter = 1e+15 milligram per square kilometer). See the formula, worked examples, and conversion table.
Metric tons per Square Meter to Milligrams per Square Kilometer 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 1000 / 1e-12.
Mass Application Rate units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Metric tons per Square Meter to Milligrams per Square Kilometer
Metric ton per Square Meter and Milligram per Square Kilometer 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
milligrams per square kilometer = metric tons per square meter × 1e+15
This factor comes from each unit's defined relationship to the category's base unit: 1 metric ton per square meter equals 1000 base units, and 1 milligram per square kilometer equals 1e-12 base units, so dividing one by the other gives the direct metric ton per square meter-to-milligram per square kilometer factor of 1e+15.
Simple example
1 t/m2 × 1e+15 = 1e+15 mg/km2
1 metric ton per square meter = 1e+15 milligrams per square kilometer.
Real-world example
100 t/m2 × 1e+15 = 1e+17 mg/km2
100 metric tons per square meter = 1e+17 milligrams per square kilometer.
Conversion table
| Metric ton per Square Meter (t/m2) | Milligram per Square Kilometer (mg/km2) |
|---|---|
| 1 t/m2 | 1e+15 mg/km2 |
| 5 t/m2 | 5e+15 mg/km2 |
| 10 t/m2 | 1e+16 mg/km2 |
| 50 t/m2 | 5e+16 mg/km2 |
| 100 t/m2 | 1e+17 mg/km2 |
| 500 t/m2 | 5e+17 mg/km2 |
Reverse conversion: Milligram per Square Kilometer to Metric ton per Square Meter
1e+15 mg/km2 × 1e-15 = 1 t/m2
1e+15 milligrams per square kilometer = 1 metric ton per square meter.
metric tons per square meter = milligrams per square kilometer × 1e-15
For a page dedicated to this direction, see Milligram per Square Kilometer to Metric ton per Square Meter.
Understanding the Metric ton per Square Meter (t/m2)
Mass application rate.
Understanding the Milligram per Square Kilometer (mg/km2)
Mass application rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per square kilometer are in 1 metric ton per square meter?
1 metric ton per square meter equals 1e+15 milligrams per square kilometer, using the exact defined conversion factor rather than an estimate.
How do I convert metric ton per square meter to milligram per square kilometer?
Multiply the metric ton per square meter value by 1e+15. The converter above does this instantly to whatever precision you set.
How do I convert milligram per square kilometer back to metric ton per square meter?
Use the reverse factor: 1 milligram per square kilometer equals 1e-15 metric tons per square meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a metric ton per square meter?
Metric ton per Square Meter (t/m2) is a unit of agriculture.
What is a milligram per square kilometer?
Milligram per Square Kilometer (mg/km2) is a unit of agriculture.
Is the metric ton per square meter to milligram per square kilometer conversion exact?
Yes. Both metric ton per square meter and milligram per square kilometer are defined by fixed standards rather than physical artifacts, so the factor of 1e+15 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.