Convert Standard gravity to Millimetres per second squared
Convert Standard gravity (g₀) to Millimetres per second squared (mm/s²) instantly and accurately.
Conversion Formula
mm/s² = g₀ × 9806.65
About Standard gravity
Standard gravity (g₀) is defined as exactly 9.80665 m/s² by the 3rd CGPM (1901), chosen to approximate surface gravity at ~45.5° latitude. It is the universal reference for human g-tolerance: fighter pilots sustain up to +9 g₀ with G-suit; sustained +3 g₀ causes greyout unprotected; F1 drivers experience +5 g₀ lateral and -4 g₀ braking. Pound-force is defined as 0.45359237 kg × g₀ = 4.44822 N (exact). Rocket specific impulse in seconds = thrust / (mass flow × g₀). 1 g₀ = 9.80665 m/s² = 980.665 Gal ≈ 32.174 ft/s² ≈ 35.304 km/h/s.
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
| Standard gravity (g₀) | Millimetres per second squared (mm/s²) |
|---|---|
| 1 g₀ | 9806.65 mm/s² |
| 2 g₀ | 19613.3 mm/s² |
| 5 g₀ | 49033.3 mm/s² |
| 10 g₀ | 98066.5 mm/s² |
| 25 g₀ | 245166 mm/s² |
| 50 g₀ | 490333 mm/s² |
| 100 g₀ | 980665 mm/s² |