Length
Convert yard (yd) to millimetre (mm). Length units span pipe diameters (mm, inch), plant dimensions (m, ft), and roughness (µm) — mixing metric and imperial is routine.
1 yd = 914.4 mm
To convert yard to millimetre, multiply the yd value by 914.4. To go the other way, divide by 914.4 (or multiply by 0.001093613).
| yd | mm |
|---|---|
| 1 | 914.4 |
| 2 | 1828.8 |
| 5 | 4572 |
| 10 | 9144 |
| 25 | 22860 |
| 50 | 45720 |
| 100 | 91440 |
| 250 | 228600 |
| 500 | 457200 |
| 1000 | 914400 |
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 0.1093613 yd is 100 mm.
Multiply the value in yd by 914.4 to get mm. For example, 10 yd = 9144 mm.
1 yd equals 914.4 mm.
Pipe sizes are labelled in inches (NPS) but calculated in mm; equipment layouts mix metres and feet.