Convert between vibration acceleration (g, m/s²), velocity (mm/s, in/s), and displacement (µm, mils) at any frequency. Enter a value in any unit and see all equivalent measurements instantly.
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How Vibration Units Relate
Acceleration, velocity, and displacement are related through the vibration frequency. For sinusoidal motion at frequency f:
- Velocity = Acceleration / (2πf)
- Displacement = Velocity / (2πf) = Acceleration / (2πf)²
ISO 10816 Velocity Severity
For velocity-based severity assessment of rotating machinery (Class I — small machines up to 15 kW):
- Good: < 1.8 mm/s RMS
- Acceptable: 1.8–4.5 mm/s RMS
- Alert: 4.5–11.2 mm/s RMS
- Danger: > 11.2 mm/s RMS