Kilohertz to Rpm
Type a value in either box to convert between kilohertz and rpm. The factor is 60000.
| Kilohertz | Rpm |
|---|---|
| 1 kHz | 60000 rpm |
| 2 kHz | 120000 rpm |
| 3 kHz | 180000 rpm |
| 5 kHz | 300000 rpm |
| 10 kHz | 600000 rpm |
| 25 kHz | 1500000 rpm |
| 50 kHz | 3000000 rpm |
| 100 kHz | 6000000 rpm |
How to use
- Enter a value in the Kilohertz field.
- The Rpm figure appears immediately — no button to press.
- Typing in the Rpm field converts back to Kilohertz the same way.
- Use the reference table for the values that come up most often.
Kilohertz to Rpm formula
Converting kilohertz to rpm is a single multiplication by 60000.
rpm = kHz × 60000
Put another way, one kilohertz is exactly 60,000 rpm.
Why this factor: the kilohertz and the revolution per minute are both defined against the hertz, so dividing one definition by the other gives 60000 directly. Both definitions are set out in full below.
To go the other way, divide by 60000 — or use the Rpm to Kilohertz converter, which is the same calculation reversed.
Worked example
Take 60 kHz and multiply by the factor 60000: the result is 3600000 rpm.
60 kHz × 60000 = 3600000 rpm
The converter above does this for any value you type, in either direction.
What is a kilohertz?
A kilohertz is 1,000 cycles per second.
Definition: Exactly 1,000 hertz.
Where it is used: AM radio frequencies, audio sample rates (44.1 kHz for CD audio), and ultrasonic ranges.
What is a revolution per minute?
Revolutions per minute measures rotational speed as complete turns each minute.
Definition: One revolution per minute is exactly 1/60 hertz.
Where it is used: Engine and motor speeds, hard drive and fan speeds, and centrifuge settings.
Kilohertz vs Rpm
The kilohertz is a metric unit while the revolution per minute is a specialized unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many rpm are in a kilohertz?
One kilohertz equals 60000 rpm.
What is the formula to convert kilohertz to rpm?
Multiply the number of kilohertz by 60000. To reverse it, divide by 60000 instead.
How do I convert rpm back to kilohertz?
Divide by 60000, which is the same as multiplying by 1.66666667e-05.
How many rpm are in 10 kilohertz?
10 kHz works out to 600000 rpm.
How is the kilohertz defined?
Exactly 1,000 hertz.