Convert Milligal to Millimetres per second squared
Convert Milligal (mGal) to Millimetres per second squared (mm/s²) instantly and accurately.
Conversion Formula
mm/s² = mGal × 0.01
About Milligal
The milligal (mGal) equals 10⁻⁵ m/s², the standard unit for geophysical gravity surveys. Bouguer gravity anomalies - reported in mGal after latitude and terrain corrections - reveal subsurface density contrasts: salt domes give +5 to +50 mGal, oceanic spreading ridges -200 to -300 mGal. Standard gravity is ≈ 980 765 mGal at sea level. The International Gravity Reference Frame 2016 is tied to absolute stations accurate to 0.01 mGal. 1 mGal = 10⁻⁵ m/s² ≈ 1.02 × 10⁻⁶ 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
| Milligal (mGal) | Millimetres per second squared (mm/s²) |
|---|---|
| 1 mGal | 0.01 mm/s² |
| 2 mGal | 0.02 mm/s² |
| 5 mGal | 0.05 mm/s² |
| 10 mGal | 0.1 mm/s² |
| 25 mGal | 0.25 mm/s² |
| 50 mGal | 0.5 mm/s² |
| 100 mGal | 1 mm/s² |