Convert acceleration units — m/s², ft/s², g-force, Gal and more.
| Unit | Name | Value |
|---|---|---|
| m/s² | Meter/Square Second | 0.00980665 |
| cm/s² | Centimeter/Square Second | 0.980665 |
| ft/s² | Foot/Square Second | 0.032174049 |
| in/s² | Inch/Square Second | 0.38608858 |
| g | Standard Gravity | 0.001 |
| Gal | Gal (cm/s²) | 0.980665 |
Formula: in/s² = Milligravity × 0.3861
Multiply any Milligravity value by 0.3861 to get in/s².
Reverse: Milligravity = in/s² × 2.59
Common acceleration values — factor: 1 mg = 0.3861 in/s²
| Milligravity (mg) | in/s² (in/s²) | Context |
|---|---|---|
| 0.01 mg | 0.003861 in/s² | Micro sensor |
| 0.1 mg | 0.03861 in/s² | 0.1 mg |
| 1 mg | 0.3861 in/s² | 1 mg |
| 10 mg | 3.861 in/s² | 10 mg sensor |
| 16.5 mg | 6.37 in/s² | Moon surface |
| 38 mg | 14.67 in/s² | Mars surface |
| 50 mg | 19.3 in/s² | 50 mg |
| 100 mg | 38.61 in/s² | 0.1 g |
| 165 mg | 63.7 in/s² | Moon surface mg |
| 380 mg | 146.7 in/s² | Mars surface mg |
| 500 mg | 193 in/s² | 0.5 g range |
| 1000 mg | 386.1 in/s² | 1 g = 1000 mg |
| 9807 mg | 3786 in/s² | ~10 g |
| 1e+04 mg | 3861 in/s² | ~10 g |
| 1e+05 mg | 3.861e+04 in/s² | ~100 g |
1 mg = 0.3861 in/s².
9.807 m/s² = 1 g = 32.17 ft/s² = 980.7 cm/s² — use as reference.
Multiply result by 2.59 to recover the original mg 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.
Milligravity (mg) equals 0.001g = 0.00980665 m/s². It is used to specify very small accelerations in spacecraft attitude control, precision instruments, microgravity research, and inertial sensor specifications.
Accelerometers in smartphones and wearables typically have full-scale ranges of ±2g to ±16g with resolutions in the mg range. Micro-g (μg = 10⁻⁶ g) accelerometers are used on the International Space Station to measure residual vibration from crew movement.
Interesting fact: Seismic activity too small to feel (micro-earthquakes) produces accelerations of less than 1 mg. The human threshold of perception for whole-body vibration is approximately 1–5 mg depending on frequency.
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.
Converting Milligravity to in/s² 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 mg = 3.861 in/s². Reverse: 1 in/s² = 2.59 mg. Factor: 1 mg = 0.3861 in/s².
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.