Enter the value to convert into the box and modify the accuracy of the conversion by selecting number of significant figures or decimal places by clicking on the boxes provided.
The conversion formula for square centimetres (sq cm) to square inches (sq in) conversions is as follows:
The conversion formula for square inches (sq in) to square centimetres (sq cm) conversions is as follows:
The square centimetre is a unit of area, its size is that of a square with sides of one centimetre.
SI Metric
The square centimetre is defined as the area covered by a square with sides of one centimetre.
Metre
Formal: cm2
The abbreviation sq cm is also often used.
The square centimetre is an SI metric unit of area, it is one ten thousandth (1/10000) of a square metre.
Square centimetres are used worldwide for scientific applications and in the vast majority of countries worldwide in day to day use. The major exceptions being the United States and Liberia, where the metric system has not been adopted. In the UK, Canada and other former British Commonwealth countries metric units such as the square centimetre are sometimes not used by the general public.
The square inch is a unit of area that covers a square with sides of one inch in length, it is often used for measuring small areas, such as the size of a postcard.
Imperial & US Customary
The square inch is defined as the unit of area covering a square with sides of one inch.
Yard
Formal: in2
The abbreviation sq in is also often used and sq ins can sometimes be seen for numbers above one.
The sqaure inch is derived from the inch, which in turn is derived from the formal definition of the yard. A square inch is 1/1296th of a square yard.
Wikipedia: UK Weights and Measures Acts
Square inches are a standard unit of area in the United States and Liberia and are still used informally in the United Kingdom and other British Commonwealth countries that formerly used Imperial units as standard.
Conversions accurate to 9 decimal places.
| sq cm | sq in |
| 1 | 0.16 |
| 2 | 0.31 |
| 3 | 0.47 |
| 4 | 0.62 |
| 5 | 0.78 |
| 6 | 0.93 |
| 7 | 1.09 |
| 8 | 1.24 |
| 9 | 1.40 |
| 10 | 1.55 |
| sq cm | sq in |
| 10 | 1.55 |
| 20 | 3.10 |
| 30 | 4.65 |
| 40 | 6.20 |
| 50 | 7.75 |
| 60 | 9.30 |
| 70 | 10.85 |
| 80 | 12.40 |
| 90 | 13.95 |
| 100 | 15.50 |
| sq cm | sq in |
| 100 | 15.50 |
| 200 | 31.00 |
| 300 | 46.50 |
| 400 | 62.00 |
| 500 | 77.50 |
| 600 | 93.00 |
| 700 | 108.50 |
| 800 | 124.00 |
| 900 | 139.50 |
| 1,000 | 155.00 |
| sq in | sq cm |
| 1 | 6.45 |
| 2 | 12.90 |
| 3 | 19.35 |
| 4 | 25.81 |
| 5 | 32.26 |
| 6 | 38.71 |
| 7 | 45.16 |
| 8 | 51.61 |
| 9 | 58.06 |
| 10 | 64.52 |
| 11 | 70.97 |
| 12 | 77.42 |
| sq in | sq cm |
| 12 | 77.42 |
| 24 | 154.84 |
| 36 | 232.26 |
| 48 | 309.68 |
| 60 | 387.10 |
| 72 | 464.52 |
| 84 | 541.93 |
| 96 | 619.35 |
| 108 | 696.77 |
| 120 | 774.19 |
| 132 | 851.61 |
| 144 | 929.03 |