Thou (Mils) to Meters (th → m)
Formula
1 th = 0.0000254 mConversion Table
| th | m |
|---|---|
| 0 | 0 |
| 1.0000 | 0.000025400 |
| 2.0000 | 0.000050800 |
| 3.0000 | 0.000076200 |
| 4.0000 | 0.00010160 |
| 5.0000 | 0.00012700 |
| 6.0000 | 0.00015240 |
| 7.0000 | 0.00017780 |
| 8.0000 | 0.00020320 |
| 9.0000 | 0.00022860 |
| 10.000 | 0.00025400 |
| 11.000 | 0.00027940 |
| 12.000 | 0.00030480 |
| 13.000 | 0.00033020 |
| 14.000 | 0.00035560 |
| 15.000 | 0.00038100 |
| 16.000 | 0.00040640 |
| 17.000 | 0.00043180 |
| 18.000 | 0.00045720 |
| 19.000 | 0.00048260 |
| th | m |
|---|---|
| 20.000 | 0.00050800 |
| 21.000 | 0.00053340 |
| 22.000 | 0.00055880 |
| 23.000 | 0.00058420 |
| 24.000 | 0.00060960 |
| 25.000 | 0.00063500 |
| 26.000 | 0.00066040 |
| 27.000 | 0.00068580 |
| 28.000 | 0.00071120 |
| 29.000 | 0.00073660 |
| 30.000 | 0.00076200 |
| 31.000 | 0.00078740 |
| 32.000 | 0.00081280 |
| 33.000 | 0.00083820 |
| 34.000 | 0.00086360 |
| 35.000 | 0.00088900 |
| 36.000 | 0.00091440 |
| 37.000 | 0.00093980 |
| 38.000 | 0.00096520 |
| 39.000 | 0.00099060 |
| th | m |
|---|---|
| 40.000 | 0.0010160 |
| 41.000 | 0.0010414 |
| 42.000 | 0.0010668 |
| 43.000 | 0.0010922 |
| 44.000 | 0.0011176 |
| 45.000 | 0.0011430 |
| 46.000 | 0.0011684 |
| 47.000 | 0.0011938 |
| 48.000 | 0.0012192 |
| 49.000 | 0.0012446 |
| 50.000 | 0.0012700 |
| 51.000 | 0.0012954 |
| 52.000 | 0.0013208 |
| 53.000 | 0.0013462 |
| 54.000 | 0.0013716 |
| 55.000 | 0.0013970 |
| 56.000 | 0.0014224 |
| 57.000 | 0.0014478 |
| 58.000 | 0.0014732 |
| 59.000 | 0.0014986 |
| th | m |
|---|---|
| 60.000 | 0.0015240 |
| 61.000 | 0.0015494 |
| 62.000 | 0.0015748 |
| 63.000 | 0.0016002 |
| 64.000 | 0.0016256 |
| 65.000 | 0.0016510 |
| 66.000 | 0.0016764 |
| 67.000 | 0.0017018 |
| 68.000 | 0.0017272 |
| 69.000 | 0.0017526 |
| 70.000 | 0.0017780 |
| 71.000 | 0.0018034 |
| 72.000 | 0.0018288 |
| 73.000 | 0.0018542 |
| 74.000 | 0.0018796 |
| 75.000 | 0.0019050 |
| 76.000 | 0.0019304 |
| 77.000 | 0.0019558 |
| 78.000 | 0.0019812 |
| 79.000 | 0.0020066 |
Thou (Mils) to Meters Conversion
Converting Thou (Mils) (th) to Meters (m) is a common length conversion. 1 th equals 0.000025 m. For example, 100 th is equal to 0.00254 m.
Quick Mental Math: Thou (Mils) to Meters
Reference a linear anchor between thou and meters; use one memorable value.
Why is converting Thou (Mils) to Meters tricky?
Magnitude or direction confusion between thou and meters is the primary error source.
Quick Reference Values
1 th = 0.000025 m. 5 th = 0.000127 m. 10 th = 0.000254 m. 25 th = 0.000635 m. 50 th = 0.00127 m. 100 th = 0.00254 m.
What is Thou (Mils)?
Thou (Mils) (th) is a unit of length. A thou is a unit of length equal to one thousandth of an inch (0.001 in). It corresponds to exactly 25.4 micrometers (µm) in SI units. The thou is widely used in engineering and manufacturing for precise measurements of thickness and diameter [nist-si-guide]. The thou emerged in the 19th century in British engineering as a convenient subdivision of the inch. Its use was formalized to provide accuracy in machining and toolmaking, reflecting industrial measurement needs [nist-si-guide]. The thou remains common in the United States, Canada, and the UK for mechanical engineering and machining tolerances. It is frequently used in the automotive and aerospace industries for component specifications [nist-si-guide].
What is Meters?
Meters (m) is a unit of length. The meter is the SI base unit of length defined by the distance light travels in vacuum in 1/299,792,458 seconds. It provides a precise universal standard for length measurement in science, engineering, and daily life [bipm-si-brochure]. The meter was first defined in 1793 as one ten-millionth of the distance from the equator to the North Pole. It was redefined in 1983 by the CGPM to be based on the speed of light for improved accuracy [bipm-si-brochure]. Meters are used globally as the primary length unit in the SI system. Applications include construction, manufacturing, and national standards among nearly all countries except a few using customary units alongside SI [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: thow, thouh, thous, metres, meter, metre, meterss. All of these refer to the Thou (Mils) to Meters conversion.