Sumwise

Square inches to square centimeters

square centimeters = square inches × 6.4516

Reverse: square centimeters to square inches

How to convert square inches to square centimeters

One square inch is 6.4516 square centimeters, so multiply the number of square inches by 6.4516. For example, 20 square inches is 20 × 6.4516 = 129.032 square centimeters. To go back, divide by the same number, or multiply by 0.15500031.

Quick estimate

Multiplying by about 6.5 gets within 0.8% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Area conversions come up when buying flooring, paint or turf, comparing house and flat sizes, and measuring land and gardens.

square inchessquare centimeters
1 in26.4516 cm2
2 in212.9032 cm2
3 in219.3548 cm2
4 in225.8064 cm2
5 in232.258 cm2
6 in238.7096 cm2
7 in245.1612 cm2
8 in251.6128 cm2
9 in258.0644 cm2
10 in264.516 cm2
11 in270.9676 cm2
12 in277.4192 cm2
13 in283.8708 cm2
14 in290.3224 cm2
15 in296.774 cm2
16 in2103.2256 cm2
17 in2109.6772 cm2
18 in2116.1288 cm2
19 in2122.5804 cm2
20 in2129.032 cm2
25 in2161.29 cm2
30 in2193.548 cm2
40 in2258.064 cm2
50 in2322.58 cm2
60 in2387.096 cm2
70 in2451.612 cm2
75 in2483.87 cm2
80 in2516.128 cm2
90 in2580.644 cm2
100 in2645.16 cm2
120 in2774.192 cm2
150 in2967.74 cm2
200 in21,290.32 cm2
250 in21,612.9 cm2
300 in21,935.48 cm2
400 in22,580.64 cm2
500 in23,225.8 cm2
750 in24,838.7 cm2
1,000 in26,451.6 cm2
1,500 in29,677.4 cm2
2,000 in212,903.2 cm2
5,000 in232,258 cm2
10,000 in264,516 cm2

Questions

How many square centimeters are in a square inch?

6.4516 square centimeters.

How do I convert square inches to square centimeters in a spreadsheet?

Put the value in A1 and type =A1*6.4516, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.