| circular thou | 1 circ th | 2 circ th | 3 circ th | 4 circ th | 5 circ th | 6 circ th | 7 circ th | 8 circ th | 9 circ th | 10 circ th | 11 circ th | 12 circ th | 13 circ th | 14 circ th | 15 circ th | 16 circ th | 17 circ th | 18 circ th | 19 circ th | 20 circ th | 21 circ th | 22 circ th | 23 circ th | 24 circ th | 25 circ th | 26 circ th | 27 circ th | 28 circ th | 29 circ th | 30 circ th | 31 circ th | 32 circ th | 33 circ th | 34 circ th | 35 circ th | 36 circ th | 37 circ th | 38 circ th | 39 circ th | 40 circ th | 41 circ th | 42 circ th | 43 circ th | 44 circ th | 45 circ th | 46 circ th | 47 circ th | 48 circ th | 49 circ th | 50 circ th | 51 circ th | 52 circ th | 53 circ th | 54 circ th | 55 circ th | 56 circ th | 57 circ th | 58 circ th | 59 circ th | 60 circ th | 61 circ th | 62 circ th | 63 circ th | 64 circ th | 65 circ th | 66 circ th | 67 circ th | 68 circ th | 69 circ th | 70 circ th | 71 circ th | 72 circ th | 73 circ th | 74 circ th | 75 circ th | 76 circ th | 77 circ th | 78 circ th | 79 circ th | 80 circ th | 81 circ th | 82 circ th | 83 circ th | 84 circ th | 85 circ th | 86 circ th | 87 circ th | 88 circ th | 89 circ th | 90 circ th | 91 circ th | 92 circ th | 93 circ th | 94 circ th | 95 circ th | 96 circ th | 97 circ th | 98 circ th | 99 circ th | 100 circ th |
| square centimeter | 5.067075 × 10-6 cm2 | 1.013415 × 10-5 cm2 | 1.5201225 × 10-5 cm2 | 2.02683 × 10-5 cm2 | 2.5335375 × 10-5 cm2 | 3.040245 × 10-5 cm2 | 3.5469525 × 10-5 cm2 | 4.05366 × 10-5 cm2 | 4.5603675 × 10-5 cm2 | 5.067075 × 10-5 cm2 | 5.5737825 × 10-5 cm2 | 6.08049 × 10-5 cm2 | 6.5871975 × 10-5 cm2 | 7.093905 × 10-5 cm2 | 7.6006125 × 10-5 cm2 | 8.10732 × 10-5 cm2 | 8.6140275 × 10-5 cm2 | 9.120735 × 10-5 cm2 | 9.6274425 × 10-5 cm2 | 0.0001013 cm2 | 0.0001064 cm2 | 0.0001115 cm2 | 0.0001165 cm2 | 0.0001216 cm2 | 0.0001267 cm2 | 0.0001317 cm2 | 0.0001368 cm2 | 0.0001419 cm2 | 0.0001469 cm2 | 0.0001520 cm2 | 0.0001571 cm2 | 0.0001621 cm2 | 0.0001672 cm2 | 0.0001723 cm2 | 0.0001773 cm2 | 0.0001824 cm2 | 0.0001875 cm2 | 0.0001925 cm2 | 0.0001976 cm2 | 0.0002027 cm2 | 0.0002078 cm2 | 0.0002128 cm2 | 0.0002179 cm2 | 0.0002230 cm2 | 0.0002280 cm2 | 0.0002331 cm2 | 0.0002382 cm2 | 0.0002432 cm2 | 0.0002483 cm2 | 0.0002534 cm2 | 0.0002584 cm2 | 0.0002635 cm2 | 0.0002686 cm2 | 0.0002736 cm2 | 0.0002787 cm2 | 0.0002838 cm2 | 0.0002888 cm2 | 0.0002939 cm2 | 0.0002990 cm2 | 0.0003040 cm2 | 0.0003091 cm2 | 0.0003142 cm2 | 0.0003192 cm2 | 0.0003243 cm2 | 0.0003294 cm2 | 0.0003344 cm2 | 0.0003395 cm2 | 0.0003446 cm2 | 0.0003496 cm2 | 0.0003547 cm2 | 0.0003598 cm2 | 0.0003648 cm2 | 0.0003699 cm2 | 0.0003750 cm2 | 0.0003800 cm2 | 0.0003851 cm2 | 0.0003902 cm2 | 0.0003952 cm2 | 0.0004003 cm2 | 0.0004054 cm2 | 0.0004104 cm2 | 0.0004155 cm2 | 0.0004206 cm2 | 0.0004256 cm2 | 0.0004307 cm2 | 0.0004358 cm2 | 0.0004408 cm2 | 0.0004459 cm2 | 0.0004510 cm2 | 0.0004560 cm2 | 0.0004611 cm2 | 0.0004662 cm2 | 0.0004712 cm2 | 0.0004763 cm2 | 0.0004814 cm2 | 0.0004864 cm2 | 0.0004915 cm2 | 0.0004966 cm2 | 0.0005016 cm2 | 0.0005067 cm2 |
A circular thou is a unit of area, equal to the area of a circle with a diameter of one thou.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| circular thou | circ th | ≡ π⁄4 mil2 | ≈ 5.067075×10−10 m2 | Imperial/US |
| circular thous | square centimeters | circular thous | square centimeters |
|---|---|---|---|
| 1 | = 5.067075E-6 | 6 | = 3.040245E-5 |
| 2 | = 1.013415E-5 | 7 | = 3.5469525E-5 |
| 3 | = 1.5201225E-5 | 8 | = 4.05366E-5 |
| 4 | = 2.02683E-5 | 9 | = 4.5603675E-5 |
| 5 | = 2.5335375E-5 | 10 | = 5.067075E-5 |
Square centimetre (International spelling as used by the International Bureau of Weights and Measures) or square centimeter (American spelling), symbol cm2, is the SI unit of area or surface area.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| square centimeter | cm2 | ≡ 1 cm × 1 cm | = 10-4 m2 | Metric system SI |
| square centimeters | circular thous | square centimeters | circular thous |
|---|---|---|---|
| 1 | = 197352.51599789 | 6 | = 1184115.0959873 |
| 2 | = 394705.03199578 | 7 | = 1381467.6119852 |
| 3 | = 592057.54799366 | 8 | = 1578820.1279831 |
| 4 | = 789410.06399155 | 9 | = 1776172.643981 |
| 5 | = 986762.57998944 | 10 | = 1973525.1599789 |
| circular thous | square centimeters |
|---|---|
| 1 | = 5.067075 × 10-6 |
| 197,352.5159979 | = 1 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |