| thou | 1 th | 2 th | 3 th | 4 th | 5 th | 6 th | 7 th | 8 th | 9 th | 10 th | 11 th | 12 th | 13 th | 14 th | 15 th | 16 th | 17 th | 18 th | 19 th | 20 th | 21 th | 22 th | 23 th | 24 th | 25 th | 26 th | 27 th | 28 th | 29 th | 30 th | 31 th | 32 th | 33 th | 34 th | 35 th | 36 th | 37 th | 38 th | 39 th | 40 th | 41 th | 42 th | 43 th | 44 th | 45 th | 46 th | 47 th | 48 th | 49 th | 50 th | 51 th | 52 th | 53 th | 54 th | 55 th | 56 th | 57 th | 58 th | 59 th | 60 th | 61 th | 62 th | 63 th | 64 th | 65 th | 66 th | 67 th | 68 th | 69 th | 70 th | 71 th | 72 th | 73 th | 74 th | 75 th | 76 th | 77 th | 78 th | 79 th | 80 th | 81 th | 82 th | 83 th | 84 th | 85 th | 86 th | 87 th | 88 th | 89 th | 90 th | 91 th | 92 th | 93 th | 94 th | 95 th | 96 th | 97 th | 98 th | 99 th | 100 th |
| spat | 2.54 × 10-17 S | 5.08 × 10-17 S | 7.62 × 10-17 S | 1.016 × 10-16 S | 1.27 × 10-16 S | 1.524 × 10-16 S | 1.778 × 10-16 S | 2.032 × 10-16 S | 2.286 × 10-16 S | 2.54 × 10-16 S | 2.794 × 10-16 S | 3.048 × 10-16 S | 3.302 × 10-16 S | 3.556 × 10-16 S | 3.81 × 10-16 S | 4.064 × 10-16 S | 4.318 × 10-16 S | 4.572 × 10-16 S | 4.826 × 10-16 S | 5.08 × 10-16 S | 5.334 × 10-16 S | 5.588 × 10-16 S | 5.842 × 10-16 S | 6.096 × 10-16 S | 6.35 × 10-16 S | 6.604 × 10-16 S | 6.858 × 10-16 S | 7.112 × 10-16 S | 7.366 × 10-16 S | 7.62 × 10-16 S | 7.874 × 10-16 S | 8.128 × 10-16 S | 8.382 × 10-16 S | 8.636 × 10-16 S | 8.89 × 10-16 S | 9.144 × 10-16 S | 9.398 × 10-16 S | 9.652 × 10-16 S | 9.906 × 10-16 S | 1.016 × 10-15 S | 1.0414 × 10-15 S | 1.0668 × 10-15 S | 1.0922 × 10-15 S | 1.1176 × 10-15 S | 1.143 × 10-15 S | 1.1684 × 10-15 S | 1.1938 × 10-15 S | 1.2192 × 10-15 S | 1.2446 × 10-15 S | 1.27 × 10-15 S | 1.2954 × 10-15 S | 1.3208 × 10-15 S | 1.3462 × 10-15 S | 1.3716 × 10-15 S | 1.397 × 10-15 S | 1.4224 × 10-15 S | 1.4478 × 10-15 S | 1.4732 × 10-15 S | 1.4986 × 10-15 S | 1.524 × 10-15 S | 1.5494 × 10-15 S | 1.5748 × 10-15 S | 1.6002 × 10-15 S | 1.6256 × 10-15 S | 1.651 × 10-15 S | 1.6764 × 10-15 S | 1.7018 × 10-15 S | 1.7272 × 10-15 S | 1.7526 × 10-15 S | 1.778 × 10-15 S | 1.8034 × 10-15 S | 1.8288 × 10-15 S | 1.8542 × 10-15 S | 1.8796 × 10-15 S | 1.905 × 10-15 S | 1.9304 × 10-15 S | 1.9558 × 10-15 S | 1.9812 × 10-15 S | 2.0066 × 10-15 S | 2.032 × 10-15 S | 2.0574 × 10-15 S | 2.0828 × 10-15 S | 2.1082 × 10-15 S | 2.1336 × 10-15 S | 2.159 × 10-15 S | 2.1844 × 10-15 S | 2.2098 × 10-15 S | 2.2352 × 10-15 S | 2.2606 × 10-15 S | 2.286 × 10-15 S | 2.3114 × 10-15 S | 2.3368 × 10-15 S | 2.3622 × 10-15 S | 2.3876 × 10-15 S | 2.413 × 10-15 S | 2.4384 × 10-15 S | 2.4638 × 10-15 S | 2.4892 × 10-15 S | 2.5146 × 10-15 S | 2.54 × 10-15 S |
A thousandth of an inch is a derived unit of length in an inch-based system of units. Equal to 0.001 inches, it is normally referred to as a thou /ˈθaʊ/, a thousandth, or (particularly in the United States) a mil.
| 1 thous ≡ 2.54E-17 spats | 4 thous ≡ 1.016E-16 spats |
| 1.5 thous ≡ 3.81E-17 spats | 4.5 thous ≡ 1.143E-16 spats |
| 2 thous ≡ 5.08E-17 spats | 5 thous ≡ 1.27E-16 spats |
| 2.5 thous ≡ 6.35E-17 spats | 5.5 thous ≡ 1.397E-16 spats |
| 3 thous ≡ 7.62E-17 spats | 6 thous ≡ 1.524E-16 spats |
The spat (symbol S) is also an obsolete unit of distance used in astronomy. It is equal to 1000000000 kilometres (1 Tm or 1012 m). It is about 6.6846 astronomical units (AU), 1.057×10−4 light-years or3.240×10−5 parsecs.
| 1 spats ≡ 3.9370078740157E+16 thous | 4 spats ≡ 1.5748031496063E+17 thous |
| 1.5 spats ≡ 5.9055118110236E+16 thous | 4.5 spats ≡ 1.7716535433071E+17 thous |
| 2 spats ≡ 7.8740157480315E+16 thous | 5 spats ≡ 1.9685039370079E+17 thous |
| 2.5 spats ≡ 9.8425196850394E+16 thous | 5.5 spats ≡ 2.1653543307087E+17 thous |
| 3 spats ≡ 1.1811023622047E+17 thous | 6 spats ≡ 2.3622047244094E+17 thous |
| 1 thous ≡ 2.54 × 10-17 spats |
| 1 spats ≡ 3.9370078740157 × 1016 thous |