Acceleration Converter

m/s² · cm/s² · ft/s² · in/s² · g-force · Gal · mg

Convert acceleration units instantly — m/s², g-force, ft/s², Gal and more. Used by physicists, aerospace engineers, automotive designers, and sports scientists worldwide.

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Result

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1 unit =

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1 g = 9.807 m/s² | 1 ft/s² = 0.3048 m/s² | 1 Gal = 0.01 m/s²

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About Acceleration Measurement

Acceleration measures how quickly velocity changes. The SI unit is m/s² — 1 m/s² means speed increases by 1 m/s every second. Two key reference points: standard gravity (g = 9.80665 m/s²) and the Gal (1 cm/s²) used in geophysics. Acceleration is central to aerospace, automotive engineering, sports science, and medical biomechanics.

SI Unit: m/s²

Formalised with SI in 1960. Standard gravity = exactly 9.80665 m/s². Key values: free fall ≈ 9.81 m/s² · hard braking ≈ 8 m/s² · F1 braking = up to 50 m/s² · shuttle launch ≈ 29 m/s².

G-Force & Gal

G-force is acceleration as a multiple of Earth's gravity. Pilots endure up to 9 g with g-suits. The Gal (Galileo, 1978) = 1 cm/s², used to map gravitational field variations. 1 g = 9.80665 m/s² · 1 Gal = 0.01 m/s².

Common Acceleration Conversions — Quick Reference

1 ft/s² = 0.3048 m/s²

Worked Examples

Car Braking (0→60 in 4s)

~6.7 m/s² ≈ 0.68 g

v/t = 26.8 m/s ÷ 4s = 6.7 m/s²
= 21.97 ft/s²
= 0.683 g-force
Comfortable daily driving range

Earth Gravity (Standard)

9.807 m/s² = 1 g

= 980.7 cm/s² = 980.7 Gal
= 32.17 ft/s²
= 386.1 in/s²
Reference point for all g-force measurements

Fighter Jet Turn (9g)

88.26 m/s² = 9 g

= 289.6 ft/s²
= 8,826 cm/s²
= 9,000 mg
Limit of human G-suit tolerance

Moon Gravity

1.625 m/s² ≈ 0.166 g

= 162.5 cm/s² = 162.5 Gal
= 5.33 ft/s²
= 166 mg
Why astronauts bounce on the Moon

1 Gal = 0.01 m/s²

Who Uses the Acceleration Converter?

✈️ Aerospace Engineer

Converts g-force and m/s² for structural load analysis and pilot training limits.

🚗 Automotive Engineer

Measures 0-60 performance, converting between m/s² and g for test reports.

🔬 Physicist

Works in SI units and converts to g or Gal for experimental comparisons.

🌍 Geophysicist

Uses Gal and milliGal to measure gravitational field variations during surveys.

🏎️ Motorsport Engineer

Monitors lateral and longitudinal g-forces on cars and drivers during testing.

👨‍⚕️ Medical Researcher

Studies human tolerance to acceleration in aviation medicine and biomechanics.

Quick Mental Math for Acceleration

m/s² ↔ g

Divide by 9.81 for g. Shortcut: ÷ 10 ≈ g (2% off). 20 m/s² ÷ 10 ≈ 2 g.

m/s² ↔ Gal

× 100 for Gal. ÷ 100 for m/s². Standard gravity = 980.665 Gal.

m/s² ↔ ft/s²

× 3.281 for ft/s². Standard gravity = 32.174 ft/s².

Frequently Asked Questions — Acceleration Converter

Acceleration is the rate of change of velocity. The SI unit is m/s². An object at 1 m/s² increases speed by 1 m/s every second.

G-force (g) measures acceleration relative to standard gravity (1 g = 9.80665 m/s²). Fighter pilots experience up to 9 g in tight turns.

Divide m/s² by 9.80665. Example: 19.6133 m/s² ÷ 9.80665 = 2 g. Reverse: g × 9.80665 = m/s².

The Gal = 1 cm/s² = 0.01 m/s². Used in geophysics to measure gravitational field variations. Named after Galileo Galilei.

Multiply ft/s² by 0.3048. Example: 32.174 ft/s² × 0.3048 = 9.80665 m/s² (standard gravity).

0-60 mph in 4 seconds ≈ 6.706 m/s² ≈ 0.68 g. A sports car doing 0-60 in 3 seconds ≈ 0.91 g.

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