| 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 |
| millimeter | 0.001 mm | 0.002 mm | 0.003 mm | 0.004 mm | 0.005 mm | 0.006 mm | 0.007 mm | 0.008 mm | 0.009 mm | 0.01 mm | 0.011 mm | 0.012 mm | 0.013 mm | 0.014 mm | 0.015 mm | 0.016 mm | 0.017 mm | 0.018 mm | 0.019 mm | 0.02 mm | 0.021 mm | 0.022 mm | 0.023 mm | 0.024 mm | 0.025 mm | 0.026 mm | 0.027 mm | 0.028 mm | 0.029 mm | 0.03 mm | 0.031 mm | 0.032 mm | 0.033 mm | 0.034 mm | 0.035 mm | 0.036 mm | 0.037 mm | 0.038 mm | 0.039 mm | 0.04 mm | 0.041 mm | 0.042 mm | 0.043 mm | 0.044 mm | 0.045 mm | 0.046 mm | 0.047 mm | 0.048 mm | 0.049 mm | 0.05 mm | 0.051 mm | 0.052 mm | 0.053 mm | 0.054 mm | 0.055 mm | 0.056 mm | 0.057 mm | 0.058 mm | 0.059 mm | 0.06 mm | 0.061 mm | 0.062 mm | 0.063 mm | 0.064 mm | 0.065 mm | 0.066 mm | 0.067 mm | 0.068 mm | 0.069 mm | 0.07 mm | 0.071 mm | 0.072 mm | 0.073 mm | 0.074 mm | 0.075 mm | 0.076 mm | 0.077 mm | 0.078 mm | 0.079 mm | 0.08 mm | 0.081 mm | 0.082 mm | 0.083 mm | 0.084 mm | 0.085 mm | 0.086 mm | 0.087 mm | 0.088 mm | 0.089 mm | 0.09 mm | 0.091 mm | 0.092 mm | 0.093 mm | 0.094 mm | 0.095 mm | 0.096 mm | 0.097 mm | 0.098 mm | 0.099 mm | 0.1 mm |
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 | millimeters | micron | millimeters |
|---|---|---|---|
| 1 | ≡ 0.001 | 4 | ≡ 0.004 |
| 1.5 | ≡ 0.0015 | 4.5 | ≡ 0.0045 |
| 2 | ≡ 0.002 | 5 | ≡ 0.005 |
| 2.5 | ≡ 0.0025 | 5.5 | ≡ 0.0055 |
| 3 | ≡ 0.003 | 6 | ≡ 0.006 |
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.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| millimeter | mm | ≡ 1×10-3 m ≡ 0.001 m | ≡ 1×10-3 m ≡ 0.001 m | Metric system SI |
| millimeters | micron | millimeters | micron |
|---|---|---|---|
| 1 | ≡ 1000 | 4 | ≡ 4000 |
| 1.5 | ≡ 1500 | 4.5 | ≡ 4500 |
| 2 | ≡ 2000 | 5 | ≡ 5000 |
| 2.5 | ≡ 2500 | 5.5 | ≡ 5500 |
| 3 | ≡ 3000 | 6 | ≡ 6000 |
| micron | millimeters |
|---|---|
| 1 | ≡ 0.001 |
| 1 000 | ≡ 1 |
You can find the conversion in other languages in the following:
| 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 …) |