Convert Milligal to Centimetres per second squared
Convert Milligal (mGal) to Centimetres per second squared (cm/s²) instantly and accurately.
Conversion Formula
cm/s² = mGal × 0.001
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 Centimetres per second squared
The centimetre per second squared (cm/s²) is the CGS coherent unit of acceleration, numerically identical to the Gal (1 cm/s² = 1 Gal = 0.01 m/s²). In the CGS system, Newton's second law reads F [dyn] = m [g] × a [cm/s²]. Strong-motion seismology records earthquake accelerograms in cm/s²: the 1940 El Centro earthquake reached a peak ground acceleration of 341 cm/s² ≈ 0.35 g₀. Japan's JMA shindo 7 (structural collapse) threshold is above 400 cm/s². 1 cm/s² = 0.01 m/s² = 1 Gal ≈ 1.02 × 10⁻³ g₀.
Quick Reference Table
| Milligal (mGal) | Centimetres per second squared (cm/s²) |
|---|---|
| 1 mGal | 0.001 cm/s² |
| 2 mGal | 0.002 cm/s² |
| 5 mGal | 0.005 cm/s² |
| 10 mGal | 0.01 cm/s² |
| 25 mGal | 0.025 cm/s² |
| 50 mGal | 0.05 cm/s² |
| 100 mGal | 0.1 cm/s² |