Convert Revolutions per second to Revolutions per hour
Convert Revolutions per second (rps) to Revolutions per hour (rev/h) instantly and accurately.
Conversion Formula
rev/h = rps × 3600
About Revolutions per second
The revolution per second (rps) equals 2π rad/s ≈ 6.283 rad/s = 60 rpm, used for high-speed machines where rpm values become unwieldy. Numerically equal to hertz (Hz): a 100 rps rotor produces 100 Hz unbalance vibration, directly readable on an FFT spectrum. Gas turbine HP spools (GE GEnx) operate at 100-200 rps at cruise. Ultracentrifuges (Beckman Optima MAX-XP) reach 1333 rps (80000 rpm, 600000 × g). NMR magic-angle spinning probes rotate solid samples at 5-170 rps. Dental air turbines peak at 400-800 rps. 1 rps = 2π rad/s = 60 rpm = 360 °/s.
About Revolutions per hour
The revolution per hour (rev/h) equals π/1800 rad/s ≈ 1.745 × 10⁻³ rad/s, used for very slow rotating machinery. Cement rotary kilns - the world's longest continuously rotating machines (up to 230 m, 4000 t) - rotate at 1-5 rev/h; ball mills for ore grinding at 10-20 rev/h; concrete mixer trucks at 1-4 rev/h during transport. Large astronomical antenna drives and slow-scan telescope azimuth movements are also conveniently expressed in rev/h. 1 rev/h = π/1800 rad/s ≈ 0.02778 rpm.
Quick Reference Table
| Revolutions per second (rps) | Revolutions per hour (rev/h) |
|---|---|
| 1 rps | 3600 rev/h |
| 2 rps | 7200 rev/h |
| 5 rps | 18000 rev/h |
| 10 rps | 36000 rev/h |
| 25 rps | 90000 rev/h |
| 50 rps | 180000 rev/h |
| 100 rps | 360000 rev/h |