micron | 1 μm | 2 μm | 3 μm | 4 μm | 5 μm | 6 μm | 7 μm | 8 μm | 9 μm | 10 μm | 11 μm | 12 μm | 13 μm | 14 μm | 15 μm | 16 μm | 17 μm | 18 μm | 19 μm | 20 μm | 21 μm | 22 μm | 23 μm | 24 μm | 25 μm | 26 μm | 27 μm | 28 μm | 29 μm | 30 μm | 31 μm | 32 μm | 33 μm | 34 μm | 35 μm | 36 μm | 37 μm | 38 μm | 39 μm | 40 μm | 41 μm | 42 μm | 43 μm | 44 μm | 45 μm | 46 μm | 47 μm | 48 μm | 49 μm | 50 μm | 51 μm | 52 μm | 53 μm | 54 μm | 55 μm | 56 μm | 57 μm | 58 μm | 59 μm | 60 μm | 61 μm | 62 μm | 63 μm | 64 μm | 65 μm | 66 μm | 67 μm | 68 μm | 69 μm | 70 μm | 71 μm | 72 μm | 73 μm | 74 μm | 75 μm | 76 μm | 77 μm | 78 μm | 79 μm | 80 μm | 81 μm | 82 μm | 83 μm | 84 μm | 85 μm | 86 μm | 87 μm | 88 μm | 89 μm | 90 μm | 91 μm | 92 μm | 93 μm | 94 μm | 95 μm | 96 μm | 97 μm | 98 μm | 99 μm | 100 μm |
metric inch | 0.0025 in (metric) | 0.005 in (metric) | 0.0075 in (metric) | 0.01 in (metric) | 0.0125 in (metric) | 0.015 in (metric) | 0.0175 in (metric) | 0.02 in (metric) | 0.0225 in (metric) | 0.025 in (metric) | 0.0275 in (metric) | 0.03 in (metric) | 0.0325 in (metric) | 0.035 in (metric) | 0.0375 in (metric) | 0.04 in (metric) | 0.0425 in (metric) | 0.045 in (metric) | 0.0475 in (metric) | 0.05 in (metric) | 0.0525 in (metric) | 0.055 in (metric) | 0.0575 in (metric) | 0.06 in (metric) | 0.0625 in (metric) | 0.065 in (metric) | 0.0675 in (metric) | 0.07 in (metric) | 0.0725 in (metric) | 0.075 in (metric) | 0.0775 in (metric) | 0.08 in (metric) | 0.0825 in (metric) | 0.085 in (metric) | 0.0875 in (metric) | 0.09 in (metric) | 0.0925 in (metric) | 0.095 in (metric) | 0.0975 in (metric) | 0.1 in (metric) | 0.1025 in (metric) | 0.105 in (metric) | 0.1075 in (metric) | 0.11 in (metric) | 0.1125 in (metric) | 0.115 in (metric) | 0.1175 in (metric) | 0.12 in (metric) | 0.1225 in (metric) | 0.125 in (metric) | 0.1275 in (metric) | 0.13 in (metric) | 0.1325 in (metric) | 0.135 in (metric) | 0.1375 in (metric) | 0.14 in (metric) | 0.1425 in (metric) | 0.145 in (metric) | 0.1475 in (metric) | 0.15 in (metric) | 0.1525 in (metric) | 0.155 in (metric) | 0.1575 in (metric) | 0.16 in (metric) | 0.1625 in (metric) | 0.165 in (metric) | 0.1675 in (metric) | 0.17 in (metric) | 0.1725 in (metric) | 0.175 in (metric) | 0.1775 in (metric) | 0.18 in (metric) | 0.1825 in (metric) | 0.185 in (metric) | 0.1875 in (metric) | 0.19 in (metric) | 0.1925 in (metric) | 0.195 in (metric) | 0.1975 in (metric) | 0.2 in (metric) | 0.2025 in (metric) | 0.205 in (metric) | 0.2075 in (metric) | 0.21 in (metric) | 0.2125 in (metric) | 0.215 in (metric) | 0.2175 in (metric) | 0.22 in (metric) | 0.2225 in (metric) | 0.225 in (metric) | 0.2275 in (metric) | 0.23 in (metric) | 0.2325 in (metric) | 0.235 in (metric) | 0.2375 in (metric) | 0.24 in (metric) | 0.2425 in (metric) | 0.245 in (metric) | 0.2475 in (metric) | 0.25 in (metric) |
The micron (SI symbol: μm) or micrometer is an SI derived unit of length equaling 1×10−6 of a metre (SI standard prefix "micro-" = 10−6); that is, one millionth of a metre (or one thousandth of a millimetre, 0.001 mm, or about 0.000039 inch).
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
micron | μm | ≡ 1×10−6 m | ≡ 1×10−6 m | Metric system Non-SI |
micron | metric inches | micron | metric inches |
---|---|---|---|
1 | = 0.0025 | 4 | = 0.01 |
1.5 | = 0.00375 | 4.5 | = 0.01125 |
2 | = 0.005 | 5 | = 0.0125 |
2.5 | = 0.00625 | 5.5 | = 0.01375 |
3 | = 0.0075 | 6 | = 0.015 |
A metric inch is a nickname for a preferred 1⁄4 subdivision of an ISO 2848 basic module, or 1⁄12 of a metric foot measuring 25 millimetres (0.984 in). A metric inch is 0.4 millimetres (0.016 in) shorter than an inch.
The term was similarly used to refer to the historical Soviet Bloc practice of spacing integrated circuit pins at 1⁄10 of a 25 mm "metric inch" length, instead of the western practice of 1⁄10 of an imperial inch.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
metric inch | in (metric) | = 0.016 in | = 0.0004 m | Metric system SI |
metric inches | micron | metric inches | micron |
---|---|---|---|
1 | = 400 | 4 | = 1600 |
1.5 | = 600 | 4.5 | = 1800 |
2 | = 800 | 5 | = 2000 |
2.5 | = 1000 | 5.5 | = 2200 |
3 | = 1200 | 6 | = 2400 |
micron | metric inches |
---|---|
1 | = 0.0025 |
400 | = 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 …) |