Calculators can be used to convert measurements from one unit to another

Convert Square Inches

What would you like to convert square inches to? You may choose an imperial or metric unit.
Convert Square Inches to Acres
1 square inch is equal to 1.5942E-7 acres
Convert Square Inches to Square Miles
1 square inch is equal to 2.491E-10 square miles
Convert Square Inches to Square Yards
1 square inch is equal to 0.000772 square yards
Convert Square Inches to Square Feet
1 square inch is equal to 0.006944 square feet
Convert Square Inches to Square Kilometers
1 square inch is equal to 6.4516E-10 square kilometers
Convert Square Inches to Square Meters
1 square inch is equal to 0.000645 square meters
Convert Square Inches to Square Centimeters
1 square inch is equal to 6.4516 square centimeters
Convert Square Inches to Square Millimeters
1 square inch is equal to 645.16 square millimeters
Square inches are a measure of area. Square inch is an imperial unit of measure and can be abbreviated as sq in. For example 1 square inch can be written as 1sq in. Learn more about area and find more unit of measurement conversion tools on the area measurement conversion page.
Square Inches unit of measurement conversion

Square Inches Measurement Conversion Table

Common square inch values and equivalent imperial and metric area measurements
square inches acres square miles square yards square feet square kilometers square meters square centimeters square millimeters
1 0.00000015942 0.0000000002491 0.000772 0.006944 0.00000000064516 0.000645 6.4516 645.16
2 0.00000031885 0.0000000004982 0.001543 0.013889 0.0000000012903 0.00129 12.9032 1,290
3 0.00000047827 0.00000000074729 0.002315 0.020833 0.0000000019355 0.001935 19.3548 1,935
4 0.00000063769 0.00000000099639 0.003086 0.027778 0.0000000025806 0.002581 25.8064 2,581
5 0.00000079712 0.0000000012455 0.003858 0.034722 0.0000000032258 0.003226 32.258 3,226
6 0.00000095654 0.0000000014946 0.00463 0.041667 0.000000003871 0.003871 38.7096 3,871
7 0.000001116 0.0000000017437 0.005401 0.048611 0.0000000045161 0.004516 45.1612 4,516
8 0.0000012754 0.0000000019928 0.006173 0.055556 0.0000000051613 0.005161 51.6128 5,161
9 0.0000014348 0.0000000022419 0.006944 0.0625 0.0000000058064 0.005806 58.0644 5,806
10 0.0000015942 0.000000002491 0.007716 0.069444 0.0000000064516 0.006452 64.516 6,452
11 0.0000017537 0.0000000027401 0.008488 0.076389 0.0000000070968 0.007097 70.9676 7,097
12 0.0000019131 0.0000000029892 0.009259 0.083333 0.0000000077419 0.007742 77.4192 7,742
13 0.0000020725 0.0000000032383 0.010031 0.090278 0.0000000083871 0.008387 83.8708 8,387
14 0.0000022319 0.0000000034874 0.010802 0.097222 0.0000000090322 0.009032 90.3224 9,032
15 0.0000023914 0.0000000037365 0.011574 0.104167 0.0000000096774 0.009677 96.774 9,677
16 0.0000025508 0.0000000039856 0.012346 0.111111 0.000000010323 0.010323 103.2256 10,323
17 0.0000027102 0.0000000042347 0.013117 0.118056 0.000000010968 0.010968 109.6772 10,968
18 0.0000028696 0.0000000044838 0.013889 0.125 0.000000011613 0.011613 116.1288 11,613
19 0.0000030291 0.0000000047329 0.01466 0.131944 0.000000012258 0.012258 122.5804 12,258
20 0.0000031885 0.000000004982 0.015432 0.138889 0.000000012903 0.012903 129.032 12,903