Absolute altitude Calculator

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✖Geometric altitude is the altitude as measured from the mean sea level.ⓘ Geometric Altitude [h_G]

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✖Absolute Altitude is the altitude as measured from the center of the earth.ⓘ Absolute altitude [h_a]

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Formula

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Absolute altitude

Formula

`"h"_{"a"} = "h"_{"G"}+"[Earth-R]"`

Example

`"6.4E^6m"="3000m"+"[Earth-R]"`

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Absolute altitude Solution

STEP 0: Pre-Calculation Summary

Formula Used

Absolute Altitude = Geometric Altitude+[Earth-R]
h_a = h_G+[Earth-R]
This formula uses 1 Constants, 2 Variables

Constants Used

[Earth-R] - Earth mean radius Value Taken As 6371.0088

Variables Used

Absolute Altitude - (Measured in Meter) - Absolute Altitude is the altitude as measured from the center of the earth.
Geometric Altitude - (Measured in Meter) - Geometric altitude is the altitude as measured from the mean sea level.

STEP 1: Convert Input(s) to Base Unit

Geometric Altitude: 3000 Meter --> 3000 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

h_a = h_G+[Earth-R] --> 3000+[Earth-R]

Evaluating ... ...

h_a = 6374008.8

STEP 3: Convert Result to Output's Unit

6374008.8 Meter --> No Conversion Required

FINAL ANSWER

6374008.8 ≈ 6.4E+6 Meter <-- Absolute Altitude

(Calculation completed in 00.004 seconds)

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Credits

Created by Vinay Mishra

Indian Institute for Aeronautical Engineering and Information Technology (IIAEIT), Pune

Vinay Mishra has created this Calculator and 300+ more calculators!

Verified by Shikha Maurya

Indian Institute of Technology (IIT), Bombay

Shikha Maurya has verified this Calculator and 200+ more calculators!

< 14 Atmosphere and Gas Properties Calculators

Mach Number given Dynamic Pressure

Go Mach Number = sqrt((2*Dynamic Pressure)/(Ambient Air Density*Heat Capacity Ratio*Specific Gas Constant*Static Temperature))

Ambient Air Density given Mach Number and Temperature

Go Ambient Air Density = (2*Dynamic Pressure)/(Mach Number^2*Heat Capacity Ratio*Specific Gas Constant*Static Temperature)

Temperature given Dynamic Pressure and Mach Number

Go Static Temperature = (2*Dynamic Pressure)/(Ambient Air Density*Mach Number^2*Specific Gas Constant*Heat Capacity Ratio)

Gas constant given dynamic pressure

Go Specific Gas Constant = (2*Dynamic Pressure)/(Ambient Air Density*Mach Number^2*Heat Capacity Ratio*Static Temperature)

Equivalent Airspeed given Static Pressure

Go Equivalent Airspeed = Sonic Speed at Sea Level*Mach Number*(Static Pressure*6894.7573/Static Sea Level Pressure)^(0.5)

Geometric altitude for given geopotential altitude

Go Geometric Altitude = [Earth-R]*Geopotential altitude/([Earth-R]-Geopotential altitude)

Geopotential altitude

Go Geopotential altitude = [Earth-R]*Geometric Altitude/([Earth-R]+Geometric Altitude)

Mach Number given Static and Dynamic Pressure

Go Mach Number = sqrt(2*Dynamic Pressure/(Static Pressure*Heat Capacity Ratio))

Ambient Pressure given Dynamic Pressure and Mach Number

Go Static Pressure = (2*Dynamic Pressure)/(Heat Capacity Ratio*Mach Number^2)

Ambient air density given mach number

Go Ambient Air Density = 2*Dynamic Pressure/(Mach Number*Sonic Speed)^2

Ambient air density given dynamic pressure

Go Ambient Air Density = 2*Dynamic Pressure/(Flight Speed^2)

Lapse rate

Go Lapse Rate = Change in Temperature/Altitude difference

Geometric altitude

Go Geometric Altitude = Absolute Altitude-[Earth-R]

Absolute altitude

Go Absolute Altitude = Geometric Altitude+[Earth-R]

Absolute altitude Formula

Absolute Altitude = Geometric Altitude+[Earth-R]
h_a = h_G+[Earth-R]

What does the geometric altitude tell?

A geometric altitude measurement tells you exactly how far you are from the ground. In practice, making geometric altitude measurements requires specialized electronic equipment like a GPS.

How to Calculate Absolute altitude?

Absolute altitude calculator uses Absolute Altitude = Geometric Altitude+[Earth-R] to calculate the Absolute Altitude, The Absolute altitude is defined as the sum of geometric altitude and the mean radius of the earth. It can be measured using a radar altimeter (or "absolute altimeter"). Absolute Altitude is denoted by h_a symbol.

How to calculate Absolute altitude using this online calculator? To use this online calculator for Absolute altitude, enter Geometric Altitude (h_G) and hit the calculate button. Here is how the Absolute altitude calculation can be explained with given input values -> 6.4E+6 = 3000+[Earth-R].

FAQ

What is Absolute altitude?

The Absolute altitude is defined as the sum of geometric altitude and the mean radius of the earth. It can be measured using a radar altimeter (or "absolute altimeter") and is represented as h_a = h_G+[Earth-R] or Absolute Altitude = Geometric Altitude+[Earth-R]. Geometric altitude is the altitude as measured from the mean sea level.

How to calculate Absolute altitude?

The Absolute altitude is defined as the sum of geometric altitude and the mean radius of the earth. It can be measured using a radar altimeter (or "absolute altimeter") is calculated using Absolute Altitude = Geometric Altitude+[Earth-R]. To calculate Absolute altitude, you need Geometric Altitude (h_G). With our tool, you need to enter the respective value for Geometric Altitude and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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