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`g_h = g(r_e/(r_e + "h" )) ^2`

Enter a value for all fields

The **Acceleration Due to Gravity at an Altitude **calculator estimates the acceleration due to gravity on Earth at a specific altitude above sea level.

**INSTRUCTIONS**: Choose units and enter the following:

- (
**h**) Altitude above sea level

**Acceleration Due to Gravity (g _{h}):** The calculator returns the acceleration in meters per second squared. However, this can be automatically converted to compatible units via the pull-down menu.

The **Acceleration due to Gravity by Altitude** calculator estimates the approximate acceleration due to gravity on the surface of the Earth based on the **altitude**.

The equation for the acceleration due to gravity based on altitude is:

`g_"alt" = g * ( r_e/(r_e +h))^2`

where:

- g
_{alt}is the acceleration due to gravity at a specific altitude - r
_{e}is the Mean Radius of the Earth (**r**): 6371.009 km_{e} - g is Acceleration Due to Gravity at Sea Level (
**g**): 9.80665 m/s²