RPM to Hertz converts at a fixed factor, so the tables below cover both directions across the range in ordinary use. Values are exact conversions, rounded only for display.
RPM to Hertz
| RPM | Hertz |
|---|---|
| 60 | 1 |
| 120 | 2 |
| 300 | 5 |
| 600 | 10 |
| 900 | 15 |
| 1200 | 20 |
| 1500 | 25 |
| 1800 | 30 |
| 2400 | 40 |
| 3000 | 50 |
| 3600 | 60 |
| 5000 | 83.33 |
| 7500 | 125 |
| 10000 | 166.67 |
| 12000 | 200 |
| 15000 | 250 |
| 18000 | 300 |
| 20000 | 333.33 |
| 22000 | 366.67 |
| 25000 | 416.67 |
Hertz to RPM
| Hertz | RPM |
|---|---|
| 60 | 3600 |
| 120 | 7200 |
| 300 | 18000 |
| 600 | 36000 |
| 900 | 54000 |
| 1200 | 72000 |
| 1500 | 90000 |
| 1800 | 108000 |
| 2400 | 144000 |
| 3000 | 180000 |
| 3600 | 216000 |
| 5000 | 300000 |
| 7500 | 450000 |
| 10000 | 600000 |
| 12000 | 720000 |
| 15000 | 900000 |
| 18000 | 1080000 |
| 20000 | 1200000 |
| 22000 | 1320000 |
| 25000 | 1500000 |
Method and precision
Conversions use a factor of 0.016666666666666666 hertz per rpm, applied exactly and rounded to 2 decimal places for display only. The converter above uses the unrounded factor.
What to watch for
Hertz is revolutions per second, so the conversion is simply a division by sixty. Rotary and air tools are rated in RPM, while vibration and balancing work is usually expressed in hertz. They are the same quantity in different units.
Measuring equipment is in measuring equipment.