Mass application rate.
Short tons per Square mile to Pounds per Acre Converter — ton/mi2 to lb/ac
Convert Short ton per Square mile (ton/mi2) to Pound per Acre (lb/ac) using the exact conversion factor (1 short ton per square mile = 3.125 pound per acre). See the formula, worked examples, and conversion table.
Short tons per Square mile to Pounds 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 0.0003502659863 / 0.0001120851156.
Mass Application Rate units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Short tons per Square mile to Pounds per Acre
Short ton per Square mile and Pound 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
pounds per acre = short tons per square mile × 3.125
This factor comes from each unit's defined relationship to the category's base unit: 1 short ton per square mile equals 0.000350265986311 base units, and 1 pound per acre equals 0.000112085115619 base units, so dividing one by the other gives the direct short ton per square mile-to-pound per acre factor of 3.125.
Simple example
1 ton/mi2 × 3.125 = 3.125 lb/ac
1 short ton per square mile = 3.125 pounds per acre.
Real-world example
100 ton/mi2 × 3.125 = 312.5 lb/ac
100 short tons per square mile = 312.5 pounds per acre.
Conversion table
| Short ton per Square mile (ton/mi2) | Pound per Acre (lb/ac) |
|---|---|
| 1 ton/mi2 | 3.125 lb/ac |
| 5 ton/mi2 | 15.625 lb/ac |
| 10 ton/mi2 | 31.25 lb/ac |
| 50 ton/mi2 | 156.25 lb/ac |
| 100 ton/mi2 | 312.5 lb/ac |
| 500 ton/mi2 | 1,562.5 lb/ac |
Reverse conversion: Pound per Acre to Short ton per Square mile
3.125 lb/ac × 0.32 = 1 ton/mi2
3.125 pounds per acre = 1 short ton per square mile.
short tons per square mile = pounds per acre × 0.32
For a page dedicated to this direction, see Pound per Acre to Short ton per Square mile.
Understanding the Short ton per Square mile (ton/mi2)
Mass application rate.
Understanding the Pound per Acre (lb/ac)
Mass application rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per acre are in 1 short ton per square mile?
1 short ton per square mile equals 3.125 pounds per acre, using the exact defined conversion factor rather than an estimate.
How do I convert short ton per square mile to pound per acre?
Multiply the short ton per square mile value by 3.125. The converter above does this instantly to whatever precision you set.
How do I convert pound per acre back to short ton per square mile?
Use the reverse factor: 1 pound per acre equals 0.32 short tons per square mile. You can also use the swap control in the converter above to flip the direction instantly.
What is a short ton per square mile?
Short ton per Square mile (ton/mi2) is a unit of agriculture.
What is a pound per acre?
Pound per Acre (lb/ac) is a unit of agriculture.
Is the short ton per square mile to pound per acre conversion exact?
Yes. Both short ton per square mile and pound per acre are defined by fixed standards rather than physical artifacts, so the factor of 3.125 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.