The square inch (symbol: sq in or in2) is a unit of area in the British imperial and the United States customary systems of measurement. One square inch is equal to the area of a square with sides of one inch. It is equal to 6.4516 square centimeter or 645.16 square millimeter
A square kilometer (symbol: sq km or km2) is equal to one million square meters. One square kilometer is approximately 0.39 square miles. Large areas of land are expressed in square kilometer -- for example area of a city or a forest.
| square inch (in2) | square kilometer (km2) |
|---|---|
| 1 square inch | 6.4516E-10 square kilometer |
| 2 square inches | 1.29032E-9 square kilometer |
| 3 square inches | 1.93548E-9 square kilometer |
| 4 square inches | 2.58064E-9 square kilometer |
| 5 square inches | 3.2258E-9 square kilometer |
| 6 square inches | 3.87096E-9 square kilometer |
| 7 square inches | 4.51612E-9 square kilometer |
| 8 square inches | 5.16128E-9 square kilometer |
| 9 square inches | 5.80644E-9 square kilometer |
| 10 square inches | 6.4516E-9 square kilometer |
| 11 square inches | 7.09676E-9 square kilometer |
| 12 square inches | 7.74192E-9 square kilometer |
| 13 square inches | 8.38708E-9 square kilometer |
| 14 square inches | 9.03224E-9 square kilometer |
| 15 square inches | 9.6774E-9 square kilometer |
| 16 square inches | 1.032256E-8 square kilometer |
| 17 square inches | 1.096772E-8 square kilometer |
| 18 square inches | 1.161288E-8 square kilometer |
| 19 square inches | 1.225804E-8 square kilometer |
| 20 square inches | 1.29032E-8 square kilometer |
| 21 square inches | 1.354836E-8 square kilometer |
| 22 square inches | 1.419352E-8 square kilometer |
| 23 square inches | 1.483868E-8 square kilometer |
| 24 square inches | 1.548384E-8 square kilometer |
| 25 square inches | 1.6129E-8 square kilometer |
| 26 square inches | 1.677416E-8 square kilometer |
| 27 square inches | 1.741932E-8 square kilometer |
| 28 square inches | 1.806448E-8 square kilometer |
| 29 square inches | 1.870964E-8 square kilometer |
| 30 square inches | 1.93548E-8 square kilometer |
| 31 square inches | 1.999996E-8 square kilometer |
| 32 square inches | 2.064512E-8 square kilometer |
| 33 square inches | 2.129028E-8 square kilometer |
| 34 square inches | 2.193544E-8 square kilometer |
| 35 square inches | 2.25806E-8 square kilometer |
| 36 square inches | 2.322576E-8 square kilometer |
| 37 square inches | 2.387092E-8 square kilometer |
| 38 square inches | 2.451608E-8 square kilometer |
| 39 square inches | 2.516124E-8 square kilometer |
| 40 square inches | 2.58064E-8 square kilometer |
| 41 square inches | 2.645156E-8 square kilometer |
| 42 square inches | 2.709672E-8 square kilometer |
| 43 square inches | 2.774188E-8 square kilometer |
| 44 square inches | 2.838704E-8 square kilometer |
| 45 square inches | 2.90322E-8 square kilometer |
| 46 square inches | 2.967736E-8 square kilometer |
| 47 square inches | 3.032252E-8 square kilometer |
| 48 square inches | 3.096768E-8 square kilometer |
| 49 square inches | 3.161284E-8 square kilometer |
| 50 square inches | 3.2258E-8 square kilometer |
| 51 square inches | 3.290316E-8 square kilometer |
| 52 square inches | 3.354832E-8 square kilometer |
| 53 square inches | 3.419348E-8 square kilometer |
| 54 square inches | 3.483864E-8 square kilometer |
| 55 square inches | 3.54838E-8 square kilometer |
| 56 square inches | 3.612896E-8 square kilometer |
| 57 square inches | 3.677412E-8 square kilometer |
| 58 square inches | 3.741928E-8 square kilometer |
| 59 square inches | 3.806444E-8 square kilometer |
| 60 square inches | 3.87096E-8 square kilometer |
| 61 square inches | 3.935476E-8 square kilometer |
| 62 square inches | 3.999992E-8 square kilometer |
| 63 square inches | 4.064508E-8 square kilometer |
| 64 square inches | 4.129024E-8 square kilometer |
| 65 square inches | 4.19354E-8 square kilometer |
| 66 square inches | 4.258056E-8 square kilometer |
| 67 square inches | 4.322572E-8 square kilometer |
| 68 square inches | 4.387088E-8 square kilometer |
| 69 square inches | 4.451604E-8 square kilometer |
| 70 square inches | 4.51612E-8 square kilometer |
| 71 square inches | 4.580636E-8 square kilometer |
| 72 square inches | 4.645152E-8 square kilometer |
| 73 square inches | 4.709668E-8 square kilometer |
| 74 square inches | 4.774184E-8 square kilometer |
| 75 square inches | 4.8387E-8 square kilometer |
| 76 square inches | 4.903216E-8 square kilometer |
| 77 square inches | 4.967732E-8 square kilometer |
| 78 square inches | 5.032248E-8 square kilometer |
| 79 square inches | 5.096764E-8 square kilometer |
| 80 square inches | 5.16128E-8 square kilometer |
| 81 square inches | 5.225796E-8 square kilometer |
| 82 square inches | 5.290312E-8 square kilometer |
| 83 square inches | 5.354828E-8 square kilometer |
| 84 square inches | 5.419344E-8 square kilometer |
| 85 square inches | 5.48386E-8 square kilometer |
| 86 square inches | 5.548376E-8 square kilometer |
| 87 square inches | 5.612892E-8 square kilometer |
| 88 square inches | 5.677408E-8 square kilometer |
| 89 square inches | 5.741924E-8 square kilometer |
| 90 square inches | 5.80644E-8 square kilometer |
| 91 square inches | 5.870956E-8 square kilometer |
| 92 square inches | 5.935472E-8 square kilometer |
| 93 square inches | 5.999988E-8 square kilometer |
| 94 square inches | 6.064504E-8 square kilometer |
| 95 square inches | 6.12902E-8 square kilometer |
| 96 square inches | 6.193536E-8 square kilometer |
| 97 square inches | 6.258052E-8 square kilometer |
| 98 square inches | 6.322568E-8 square kilometer |
| 99 square inches | 6.387084E-8 square kilometer |
| 100 square inches | 6.4516E-8 square kilometer |
| 150 square inches | 9.6774E-8 square kilometer |
| 200 square inches | 1.29032E-7 square kilometer |
| 250 square inches | 1.6129E-7 square kilometer |
| 300 square inches | 1.93548E-7 square kilometer |
| 350 square inches | 2.25806E-7 square kilometer |
| 400 square inches | 2.58064E-7 square kilometer |
| 450 square inches | 2.90322E-7 square kilometer |
| 500 square inches | 3.2258E-7 square kilometer |
| 550 square inches | 3.54838E-7 square kilometer |
| 600 square inches | 3.87096E-7 square kilometer |
| 650 square inches | 4.19354E-7 square kilometer |
| 700 square inches | 4.51612E-7 square kilometer |
| 750 square inches | 4.8387E-7 square kilometer |
| 800 square inches | 5.16128E-7 square kilometer |
| 850 square inches | 5.48386E-7 square kilometer |
| 900 square inches | 5.80644E-7 square kilometer |
| 950 square inches | 6.12902E-7 square kilometer |
| 1000 square inches | 6.4516E-7 square kilometer |
| 1500 square inches | 9.6774E-7 square kilometer |
| 2000 square inches | 1.29032E-6 square kilometer |
| 2500 square inches | 1.6129E-6 square kilometer |
| 3000 square inches | 1.93548E-6 square kilometer |
| 3500 square inches | 2.25806E-6 square kilometer |
| 4000 square inches | 2.58064E-6 square kilometer |
| 4500 square inches | 2.90322E-6 square kilometer |
| 5000 square inches | 3.2258E-6 square kilometer |
| 5500 square inches | 3.54838E-6 square kilometer |
| 6000 square inches | 3.87096E-6 square kilometer |
| 6500 square inches | 4.19354E-6 square kilometer |
| 7000 square inches | 4.51612E-6 square kilometer |
| 7500 square inches | 4.8387E-6 square kilometer |
| 8000 square inches | 5.16128E-6 square kilometer |
| 8500 square inches | 5.48386E-6 square kilometer |
| 9000 square inches | 5.80644E-6 square kilometer |
| 9500 square inches | 6.12902E-6 square kilometer |
| 10000 square inches | 6.4516E-6 square kilometer |
| 15000 square inches | 9.6774E-6 square kilometer |
| 20000 square inches | 1.29032E-5 square kilometer |
| 25000 square inches | 1.6129E-5 square kilometer |
| 30000 square inches | 1.93548E-5 square kilometer |
| 35000 square inches | 2.25806E-5 square kilometer |
| 40000 square inches | 2.58064E-5 square kilometer |
| 45000 square inches | 2.90322E-5 square kilometer |
| 50000 square inches | 3.2258E-5 square kilometer |
| 55000 square inches | 3.54838E-5 square kilometer |
| 60000 square inches | 3.87096E-5 square kilometer |
| 65000 square inches | 4.19354E-5 square kilometer |
| 70000 square inches | 4.51612E-5 square kilometer |
| 75000 square inches | 4.8387E-5 square kilometer |
| 80000 square inches | 5.16128E-5 square kilometer |
| 85000 square inches | 5.48386E-5 square kilometer |
| 90000 square inches | 5.80644E-5 square kilometer |
| 95000 square inches | 6.12902E-5 square kilometer |
| 100000 square inches | 6.4516E-5 square kilometer |