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Acceleration Converter

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Acceleration is how fast a velocity changes: a car going from 0 to 100 km/h in 10 seconds speeds up by 10 km/h each second. Its SI unit is the meter per second squared (m/s²). It is also often given in g, multiples of the standard acceleration of gravity, 9.80665 m/s².

a = Δv / Δt

How to convert acceleration units

Type a value into any field, and every other unit is calculated at once. For example, the car above: 100 km/h is 27.78 m/s, so its acceleration is 27.78 / 10 = 2.778 m/s².

  1. In g: divide by 9.80665.

    2.778 / 9.80665 = 0.283 g

  2. In ft/s²: multiply by 3.28084.

    2.778 × 3.28084 = 9.114 ft/s²

Common conversions

Value Equals
1 g 9.80665 m/s²
1 g 32.174 ft/s²
1 m/s² 0.101972 g
1 m/s² 3.28084 ft/s²
1 ft/s² 0.3048 m/s²
1 ft/s² 0.031081 g
1 Gal 0.01 m/s²

Acceleration units

  • Meter per second squared (m/s²): This is the SI unit for acceleration. It is the acceleration experienced when an object's velocity changes by 1 meter per second in 1 second.

  • Kilometer per second squared (km/s²): The acceleration experienced when an object's velocity changes by 1 km/s in 1 second.
    Conversion Factor: 1 km/s² = 1,000 m/s²

  • Millimeter per second squared (mm/s²): The acceleration experienced when an object's velocity changes by 1 mm/s in 1 second.
    Conversion Factor: 1 mm/s² = 0.001 m/s²

  • Micrometer per second squared (μm/s²): The acceleration experienced when an object's velocity changes by 1 μm/s in 1 second.
    Conversion Factor: 1 μm/s² = 0.000001 m/s²

  • Nanometer per second squared (nm/s²): The acceleration experienced when an object's velocity changes by 1 nm/s in 1 second.
    Conversion Factor: 1 nm/s² = 0.000000001 m/s²

  • Mile per second squared (mi/s²): The acceleration experienced when an object's velocity changes by 1 mile per second in 1 second.
    Conversion Factor: 1 mi/s² = 1760 yd/s² ≈ 1609.34 m/s²

  • Yard per second squared (yd/s²): The acceleration experienced when an object's velocity changes by 1 yard per second in 1 second.
    Conversion Factor: 1 yd/s² = 3 ft/s² ≈ 0.9144 m/s²

  • Foot per second squared (ft/s²): The acceleration experienced when an object's velocity changes by 1 foot per second in 1 second.
    Conversion Factor: 1 ft/s² = 12 in/s² ≈ 0.3048 m/s²

  • Inch per second squared (in/s²): The acceleration experienced when an object's velocity changes by 1 inch per second in 1 second.
    Conversion Factor: 1 in/s² ≈ 0.0254 m/s²

  • Gal (gal): A unit of acceleration commonly used in geophysics, equal to 0.01 meter per second squared (m/s²), or 1 centimeter per second squared (cm/s²).
    Conversion Factor: 1 gal = 1 cm/s² = 0.01 m/s²

  • Galileo (Gal): Another name for a gal, named after the Italian astronomer and physicist Galileo Galilei.
    Conversion Factor: 1 Gal = 1 gal = 1 cm/s² = 0.01 m/s²

  • Acceleration of gravity (g): The acceleration of a falling object near the Earth's surface. The real value varies with location, from about 9.78 m/s² at the equator to 9.83 m/s² at the poles, so a standard value is defined, exactly 9.80665 m/s².
    Conversion Factor: 1 g = 9.80665 m/s²