Convert Inches per Minute to Millimetres per Second
Convert Inches per Minute (in/min) to Millimetres per Second (mm/s) instantly and accurately.
Conversion Formula
mm/s = in/min × 0.4233333333
About Inches per Minute
An inch per minute (in/min) ≈ 0.4233 mm/s - the standard North American machining feed unit for slow precision cuts. CNC milling in titanium or nickel superalloys: HSS roughing 2-8 in/min; carbide finishing 15-40 in/min. Thread-tapping feeds are calculated in in/min from pitch × RPM. Hydraulic press platen closure for rubber moulding and laminate pressing: 0.05-2 in/min. 1 in/min = 0.0254 m/min ≈ 4.233 × 10⁻⁴ m/s.
About Millimetres per Second
A millimetre per second (mm/s) is 10⁻³ m/s - the speed of slow industrial mechanisms and recognisable biological motion. FDM 3D printers move at 40-120 mm/s for perimeters and 150-300 mm/s for infill. Garden snails travel 0.5-1.5 mm/s; earthworms 3-5 mm/s. CNC finishing operations run 1-several hundred mm/s. Hydraulic precision slides work at mm/s for surface preparation. Ultrasound particle velocities in soft tissue are also in this range. 1 mm/s = 10⁻³ m/s.
Quick Reference Table
| Inches per Minute (in/min) | Millimetres per Second (mm/s) |
|---|---|
| 1 in/min | 0.423333 mm/s |
| 2 in/min | 0.846667 mm/s |
| 5 in/min | 2.11667 mm/s |
| 10 in/min | 4.23333 mm/s |
| 25 in/min | 10.5833 mm/s |
| 50 in/min | 21.1667 mm/s |
| 100 in/min | 42.3333 mm/s |