| millimeter | 1 mm | 2 mm | 3 mm | 4 mm | 5 mm | 6 mm | 7 mm | 8 mm | 9 mm | 10 mm | 11 mm | 12 mm | 13 mm | 14 mm | 15 mm | 16 mm | 17 mm | 18 mm | 19 mm | 20 mm | 21 mm | 22 mm | 23 mm | 24 mm | 25 mm | 26 mm | 27 mm | 28 mm | 29 mm | 30 mm | 31 mm | 32 mm | 33 mm | 34 mm | 35 mm | 36 mm | 37 mm | 38 mm | 39 mm | 40 mm | 41 mm | 42 mm | 43 mm | 44 mm | 45 mm | 46 mm | 47 mm | 48 mm | 49 mm | 50 mm | 51 mm | 52 mm | 53 mm | 54 mm | 55 mm | 56 mm | 57 mm | 58 mm | 59 mm | 60 mm | 61 mm | 62 mm | 63 mm | 64 mm | 65 mm | 66 mm | 67 mm | 68 mm | 69 mm | 70 mm | 71 mm | 72 mm | 73 mm | 74 mm | 75 mm | 76 mm | 77 mm | 78 mm | 79 mm | 80 mm | 81 mm | 82 mm | 83 mm | 84 mm | 85 mm | 86 mm | 87 mm | 88 mm | 89 mm | 90 mm | 91 mm | 92 mm | 93 mm | 94 mm | 95 mm | 96 mm | 97 mm | 98 mm | 99 mm | 100 mm |
| spat | 1.0 × 10-15 S | 2.0 × 10-15 S | 3.0 × 10-15 S | 4.0 × 10-15 S | 5.0 × 10-15 S | 6.0 × 10-15 S | 7.0 × 10-15 S | 8.0 × 10-15 S | 9.0 × 10-15 S | 1.0 × 10-14 S | 1.1 × 10-14 S | 1.2 × 10-14 S | 1.3 × 10-14 S | 1.4 × 10-14 S | 1.5 × 10-14 S | 1.6 × 10-14 S | 1.7 × 10-14 S | 1.8 × 10-14 S | 1.9 × 10-14 S | 2.0 × 10-14 S | 2.1 × 10-14 S | 2.2 × 10-14 S | 2.3 × 10-14 S | 2.4 × 10-14 S | 2.5 × 10-14 S | 2.6 × 10-14 S | 2.7 × 10-14 S | 2.8 × 10-14 S | 2.9 × 10-14 S | 3.0 × 10-14 S | 3.1 × 10-14 S | 3.2 × 10-14 S | 3.3 × 10-14 S | 3.4 × 10-14 S | 3.5 × 10-14 S | 3.6 × 10-14 S | 3.7 × 10-14 S | 3.8 × 10-14 S | 3.9 × 10-14 S | 4.0 × 10-14 S | 4.1 × 10-14 S | 4.2 × 10-14 S | 4.3 × 10-14 S | 4.4 × 10-14 S | 4.5 × 10-14 S | 4.6 × 10-14 S | 4.7 × 10-14 S | 4.8 × 10-14 S | 4.9 × 10-14 S | 5.0 × 10-14 S | 5.1 × 10-14 S | 5.2 × 10-14 S | 5.3 × 10-14 S | 5.4 × 10-14 S | 5.5 × 10-14 S | 5.6 × 10-14 S | 5.7 × 10-14 S | 5.8 × 10-14 S | 5.9 × 10-14 S | 6.0 × 10-14 S | 6.1 × 10-14 S | 6.2 × 10-14 S | 6.3 × 10-14 S | 6.4 × 10-14 S | 6.5 × 10-14 S | 6.6 × 10-14 S | 6.7 × 10-14 S | 6.8 × 10-14 S | 6.9 × 10-14 S | 7.0 × 10-14 S | 7.1 × 10-14 S | 7.2 × 10-14 S | 7.3 × 10-14 S | 7.4 × 10-14 S | 7.5 × 10-14 S | 7.6 × 10-14 S | 7.7 × 10-14 S | 7.8 × 10-14 S | 7.9 × 10-14 S | 8.0 × 10-14 S | 8.1 × 10-14 S | 8.2 × 10-14 S | 8.3 × 10-14 S | 8.4 × 10-14 S | 8.5 × 10-14 S | 8.6 × 10-14 S | 8.7 × 10-14 S | 8.8 × 10-14 S | 8.9 × 10-14 S | 9.0 × 10-14 S | 9.1 × 10-14 S | 9.2 × 10-14 S | 9.3 × 10-14 S | 9.4 × 10-14 S | 9.5 × 10-14 S | 9.6 × 10-14 S | 9.7 × 10-14 S | 9.8 × 10-14 S | 9.9 × 10-14 S | 1.0 × 10-13 S |
The millimetre (International spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. Therefore there are thousand millimetres in a metre. There are ten millimetres in a centimetre.
| 1 millimeters ≡ 1.0E-15 spats | 4 millimeters ≡ 4.0E-15 spats |
| 1.5 millimeters ≡ 1.5E-15 spats | 4.5 millimeters ≡ 4.5E-15 spats |
| 2 millimeters ≡ 2.0E-15 spats | 5 millimeters ≡ 5.0E-15 spats |
| 2.5 millimeters ≡ 2.5E-15 spats | 5.5 millimeters ≡ 5.5E-15 spats |
| 3 millimeters ≡ 3.0E-15 spats | 6 millimeters ≡ 6.0E-15 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 ≡ 1.0E+15 millimeters | 4 spats ≡ 4.0E+15 millimeters |
| 1.5 spats ≡ 1.5E+15 millimeters | 4.5 spats ≡ 4.5E+15 millimeters |
| 2 spats ≡ 2.0E+15 millimeters | 5 spats ≡ 5.0E+15 millimeters |
| 2.5 spats ≡ 2.5E+15 millimeters | 5.5 spats ≡ 5.5E+15 millimeters |
| 3 spats ≡ 3.0E+15 millimeters | 6 spats ≡ 6.0E+15 millimeters |
| 1 millimeters ≡ 1.0 × 10-15 spats |
| 1 spats ≡ 1.0 × 1015 millimeters |