A square inch is the area of a one-inch square.
Square inches to Sections Converter — in2 to section
Convert Square inch (in2) to Section (section) using the exact conversion factor (1 square inch = 2.490977e-10 section). See the formula, worked examples, and conversion table.
Square inches to Sections converter
Converter
Area Converter
Convert land, construction, mapping, survey, and scientific area units.
Context values
Some unit families need one extra value for a physically accurate result.
A US public land survey section is one square mile or 640 acres.
Result = input x 0.00064516 / 2.58998811e+6.
Area uses the square meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Square inches to Sections
Comparing Square inch and Section is common in agriculture and real estate, where US land is typically measured in acres and most of the rest of the world uses hectares. Specifically: A square inch is the area of a one-inch square, and a US public land survey section is one square mile or 640 acres.
Formula
sections = square inches × 2.490977e-10
This factor comes from each unit's defined relationship to the category's base unit: 1 square inch equals 0.00064516 base units, and 1 section equals 2589988.11034 base units, so dividing one by the other gives the direct square inch-to-section factor of 2.490977e-10.
Simple example
1 in2 × 2.490977e-10 = 2.490977e-10 section
1 square inch = 2.490977e-10 sections.
Real-world example
10 in2 × 2.490977e-10 = 2.490977e-9 section
10 square inches = 2.490977e-9 sections.
Conversion table
| Square inch (in2) | Section (section) |
|---|---|
| 1 in2 | 2.490977e-10 section |
| 5 in2 | 1.245488e-9 section |
| 10 in2 | 2.490977e-9 section |
| 25 in2 | 6.227442e-9 section |
| 50 in2 | 1.245488e-8 section |
| 100 in2 | 2.490977e-8 section |
Reverse conversion: Section to Square inch
2.490977e-10 section × 4014489600 = 1.000000126 in2
2.490977e-10 sections = 1.000000126 square inches.
square inches = sections × 4014489600
For a page dedicated to this direction, see Section to Square inch.
Understanding the Square inch (in2)
A square inch is the area of a one-inch square.
Understanding the Section (section)
A US public land survey section is one square mile or 640 acres.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many sections are in 1 square inch?
1 square inch equals 2.490977e-10 sections, using the exact defined conversion factor rather than an estimate.
How do I convert square inch to section?
Multiply the square inch value by 2.490977e-10. The converter above does this instantly to whatever precision you set.
How do I convert section back to square inch?
Use the reverse factor: 1 section equals 4,014,489,600 square inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a square inch?
Square inch (in2) is a unit of area.
What is a section?
Section (section) is a unit of area.
Is the square inch to section conversion exact?
Yes. Both square inch and section are defined by fixed standards rather than physical artifacts, so the factor of 2.490977e-10 used above is exact to as many digits as you choose to display.