Length
Convert metre (m) to thousandth of an inch (mil). Length units span pipe diameters (mm, inch), plant dimensions (m, ft), and roughness (µm) — mixing metric and imperial is routine.
1 m = 39370.08 mil
To convert metre to thousandth of an inch, multiply the m value by 39370.08. To go the other way, divide by 39370.08 (or multiply by 2.54e-5).
| m | mil |
|---|---|
| 1 | 39370.08 |
| 2 | 78740.16 |
| 5 | 196850.4 |
| 10 | 393700.8 |
| 25 | 984252 |
| 50 | 1968504 |
| 100 | 3937008 |
| 250 | 9842520 |
| 500 | 1.9685e+7 |
| 1000 | 3.937e+7 |
Pipe sizes are labelled in inches (NPS) but calculated in mm; equipment layouts mix metres and feet.
Velocity scales with the inverse square of diameter, so a small length error compounds quickly in flow calculations.
Worked example. A length of 0.1 m is 3937.008 mil.
Multiply the value in m by 39370.08 to get mil. For example, 10 m = 393700.8 mil.
1 m equals 39370.08 mil.
Pipe sizes are labelled in inches (NPS) but calculated in mm; equipment layouts mix metres and feet.