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Surface Gravity Calculator

Compute surface gravity g = GM/R² of a spherical body.

Input Data

Input Body mass M.
kg
Input Radius R.
m

Results

9.82m/s²
g = GM/R² = 9.8200 m/s²

At a glance:Surface Gravity Calculator: enter parameters to compute results; complements related calculators.

Formula

g = G M / R²

G=6.67430×10⁻¹¹

How to Use

  1. Enter body mass M.
  2. Enter radius R.
  3. Get surface gravity g.

Case Studies

Earth

M=5.972×10²⁴ kg, R=6.371×10⁶ m → g≈9.82 m/s².

FAQ

Differs from measured g?

Neglects rotation centrifugal effect and non-sphericity; equatorial g is slightly lower.

Related Tools

References

Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Surface Gravity Calculator（/physics/surface-gravity）。