Convert acceleration units — m/s², ft/s², g-force, Gal and more.
| Unit | Name | Value |
|---|---|---|
| m/s² | Meter/Square Second | 0.0254 |
| cm/s² | Centimeter/Square Second | 2.54 |
| ft/s² | Foot/Square Second | 0.083333333 |
| g | Standard Gravity | 0.0025900792 |
| Gal | Gal (cm/s²) | 2.54 |
| mG | Millig | 2.5900792 |
Formula: Gal = in/s² × 2.54
Multiply any in/s² value by 2.54 to get Gal.
Reverse: in/s² = Gal × 0.3937
Common acceleration values — factor: 1 in/s² = 2.54 Gal
| in/s² (in/s²) | Gal (Gal) | Context |
|---|---|---|
| 0.001 in/s² | 0.00254 Gal | Micro |
| 0.1 in/s² | 0.254 Gal | Very small |
| 1 in/s² | 2.54 Gal | 1 in/s² |
| 10 in/s² | 25.4 Gal | 10 in/s² |
| 100 in/s² | 254 Gal | 2.6 g range |
| 386 in/s² | 980.4 Gal | 1 g = 386.1 in/s² |
| 500 in/s² | 1270 Gal | ~1.3 g |
| 1000 in/s² | 2540 Gal | ~2.6 g |
| 3860 in/s² | 9804 Gal | ~10 g |
| 5000 in/s² | 1.27e+04 Gal | ~13 g |
| 1e+04 in/s² | 2.54e+04 Gal | ~26 g |
| 5e+04 in/s² | 1.27e+05 Gal | ~130 g |
| 1e+05 in/s² | 2.54e+05 Gal | ~259 g |
| 5e+05 in/s² | 1.27e+06 Gal | ~1,295 g |
| 1e+06 in/s² | 2.54e+06 Gal | ~2,590 g |
1 in/s² = 2.54 Gal.
9.807 m/s² = 1 g = 32.17 ft/s² = 980.7 cm/s² — use as reference.
Multiply result by 0.3937 to recover the original in/s² value.
Specifies aircraft and spacecraft acceleration loads in g and m/s² for structural design and pilot tolerance.
Measures vehicle acceleration performance (0–100 km/h) and braking deceleration in m/s² and g.
Uses Gal and mGal to measure variations in Earth's gravitational field for mineral exploration.
Programs joint acceleration limits in m/s² or in/s² for servo motor control and trajectory planning.
Calculates seismic acceleration loads (in g or m/s²) for earthquake-resistant building design.
Measures athlete acceleration performance using accelerometers reporting in g or m/s².
Inches per second squared (in/s²) is used in precision mechanical engineering and robotics where displacements are measured in inches. One in/s² = 0.0254 m/s².
In/s² appears in servo motor specifications, CNC machine acceleration profiles, and vibration analysis in US manufacturing. A servo motor might be rated for 500 in/s² maximum acceleration; a hard drive read head accelerates at thousands of in/s².
Interesting fact: Hard drive read/write heads accelerate at up to 550,000 in/s² (1,400 g) and can position themselves across the platter in milliseconds — making them among the fastest-moving precision components in consumer electronics.
The Gal (symbol: Gal) is a unit of acceleration equal to exactly 1 cm/s² = 0.01 m/s², named in honor of Galileo Galilei. It is the standard unit in geodesy and gravimetry, where small variations in Earth's gravitational field are measured.
Earth's mean gravitational acceleration is about 980 Gal (9.80 m/s²). Local variations due to geology, elevation, and latitude span about ±0.5 Gal. Modern superconducting gravimeters can detect variations smaller than 1 μGal (10⁻⁸ m/s²).
Interesting fact: Gravity surveys using Gal measurements can detect underground oil reservoirs, ore deposits, and aquifers because different materials have different densities — and thus different gravitational effects — without any drilling.
Converting in/s² to Gal is common in aerospace, automotive, geophysics, and robotics. Physics and SI engineering use m/s²; US aerospace uses ft/s²; geophysics uses Gal (cm/s²); and g-force is universal. Key anchor: Earth surface gravity = 9.807 m/s² = 1 g = 32.17 ft/s² = 980.7 Gal.
Quick reference: 10 in/s² = 25.4 Gal. Reverse: 1 Gal = 0.3937 in/s². Factor: 1 in/s² = 2.54 Gal.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.