Convert Inches per second squared to Millimetres per second squared
Convert Inches per second squared (in/s²) to Millimetres per second squared (mm/s²) instantly and accurately.
Conversion Formula
mm/s² = in/s² × 25.4
About Inches per second squared
The inch per second squared (in/s²) equals exactly 0.0254 m/s², used in US customary engineering for machine tool acceleration, CNC linear stages, and vibration testing. Standard gravity is g₀ = 386.089 in/s², a constant embedded in US dynamics software (ANSYS, Nastran) configured with US customary units. High-performance linear motor stages reach 500-2000 in/s². 1 in/s² = 0.0254 m/s² ≈ 2.59 × 10⁻³ g₀.
About Millimetres per second squared
The millimetre per second squared (mm/s²) equals 10⁻³ m/s², the standard unit for vibration acceleration in machine condition monitoring. ISO 10816 and ISO 20816 define machinery vibration limits in mm/s and mm/s²; ISO 10816-3 Zone A boundary for industrial machinery is ≈32 mm/s² at 2.2 Hz. Seismically, MMI VI ground shaking (masonry damage threshold) corresponds to 620-1250 mm/s² peak ground acceleration. 1 mm/s² = 10⁻³ m/s² ≈ 1.02 × 10⁻⁴ g₀.
Quick Reference Table
| Inches per second squared (in/s²) | Millimetres per second squared (mm/s²) |
|---|---|
| 1 in/s² | 25.4 mm/s² |
| 2 in/s² | 50.8 mm/s² |
| 5 in/s² | 127 mm/s² |
| 10 in/s² | 254 mm/s² |
| 25 in/s² | 635 mm/s² |
| 50 in/s² | 1270 mm/s² |
| 100 in/s² | 2540 mm/s² |