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G Force Calculator

Work out g force instantly with clear inputs, formula shown and shareable results.

About G Force Calculator

One g is 9.80665 m/s2 by definition, so dividing an acceleration by it gives the familiar g figure. At 29.4 m/s2 a 75 kg person experiences 3 g and feels as if they weigh 225 kg. Human tolerance depends heavily on direction and duration - a few seconds at 9 g is survivable for trained pilots, minutes are not.

Formulas

g conversion

g = acceleration / 9.80665

Apparent weight

W = m x acceleration

Worked example

With the default values below, G Force Calculator returns Acceleration In g of 2.9980. Change any input above and every figure here is recalculated in your browser.

Inputs used

Acceleration experienced
29.4 m/s2
Mass of the occupantminimum 0 kg
75 kg

Results

Acceleration In g
2.9980 g
Apparent Weight Force
2,205.0 N
Feels Like This Many Kilograms
224.847 kg
Human Tolerance
Demanding but survivable, typical of aerobatics

Step by step

  1. 1Values used
  2. 2g conversion
  3. 3Apparent weight
  4. 4Acceleration In g= 2.9980 g
  5. 5Apparent Weight Force= 2,205.0 N
  6. 6Feels Like This Many Kilograms= 224.847 kg
  7. 7Human Tolerance= Demanding but survivable, typical of aerobatics

Assumptions and limits

  • The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Do you feel 1 g standing still?

The ground pushes up with your weight, which is what your body senses. In free fall you would sense nothing, which is why orbit feels weightless.

What is the worst direction for g loading?

Head-to-foot loading is worst, because blood drains from the brain. Chest-to-back is far more tolerable, which is why astronauts launch lying down.

Related Calculators

G Force Calculator – Calculate Acceleration In g | Calcrivo