Square Inches to Sections (in² to section)

1 square inch equals 2.490966722×10⁻¹⁰ sections (rounded).

1 square inch = 2.490966722×10⁻¹⁰ sections

How to convert square inches to sections

To convert square inches to sections, multiply the number of square inches by 2.490966722×10⁻¹⁰. The factor is rounded to 10 significant digits. To go the other way, multiply sections by 4,014,505,658 (rounded).

sections = square inches × 2.490966722×10⁻¹⁰

Example: 10 square inches = 2.490966722×10⁻⁹ sections.

About these units

Square Inch (in²)

US & ImperialCurrent unit

A square one inch on a side, exactly 6.4516 cm². Used for small parts and for pressure (pounds per square inch).

Latin uncia, one twelfth, gave English the inch, which Old English borrowed as ynce. A statute of Edward II in 1324 defined it as three barleycorns, dry and round, set end to end, and the barleycorn remained the base for centuries after 1066. The modern square inch rests on a 20th-century agreement: the United States adopted a yard of exactly 0.9144 meter on 1 July 1959, the United Kingdom followed effective 1 January 1964, and the inch became exactly 25.4 mm.

Squaring that gives exactly 6.4516 cm² for one square inch, and one square meter is about 1,550 of them. Its best-known descendant is the pound per square inch, psi, the pressure unit still used for American tires and air tanks: atmospheric pressure at sea level is about 14.7 psi, a car tire is typically inflated to around 32 psi above the surrounding air, and one psi is about 6.895 kilopascals. The square inch itself is common in the US and UK for small parts and printed material.

1 square inch = 0.00064516 square meters (exactly).

Sources: Wikipedia: Square inch; Wikipedia: Inch; Wikipedia: Pounds per square inch

Section (section)

US land surveyTraditional unit (still used in some regions)

One square US survey mile (640 acres). The basic unit of the US Public Land Survey System.

Under the Land Ordinance of 1785, territory outside the existing states could not be sold or settled until it had been surveyed, and the basic parcel of that grid was the section: a square mile, about 2.6 square kilometers, holding 640 acres. Thirty-six of them make a township. Numbering runs back and forth in a snaking pattern, starting with section 1 in the northeast corner and ending with section 36 in the southeast.

Sections were meant to be cut into smaller pieces. A quarter section is 160 acres, and the Homestead Act of 1862 let a settler claim that amount after living on it and improving it for five years. Quarter-quarters of 40 acres are still used in legal descriptions. Section 16 was set aside to fund local schools, and in several western states section 36 was added too. In practice few sections are perfect squares, because the curve of the Earth, compass errors and rough terrain bent the lines, and the original survey monuments still take legal precedence over later measurement.

1 section = 2,589,998.47 square meters (approximately).

Sources: Wikipedia: Section (United States land surveying); Wikipedia: Public Land Survey System

Related conversions

See all area units.