Hertz (Hz)	Kilohertz (kHz)
1 Hz	0.001 kHz
2 Hz	0.002 kHz
5 Hz	0.005 kHz
10 Hz	0.01 kHz
25 Hz	0.025 kHz
50 Hz	0.05 kHz
100 Hz	0.1 kHz
250 Hz	0.25 kHz
500 Hz	0.5 kHz
1000 Hz	1 kHz

Frequency Unit Conversions

Free online frequency converter. Instantly convert between Hertz, Kilohertz, Megahertz, Gigahertz, Terahertz, and more with exact scientific formulas.

Understanding Frequency Conversions

The standard SI unit of frequency is the hertz (Hz), defined as one complete cycle or oscillation per second (1 s⁻¹).

Supported Frequency Units (8 Units)

Hertz (Hz) (Base SI unit (1 cycle/sec)) — Primary SI / Base Reference Unit
Kilohertz (kHz) (Audio & AM radio (1,000 Hz)) — 1 kHz = 1000 Hz
Megahertz (MHz) (FM radio, clock frequencies (10^6 Hz)) — 1 MHz = 1000000 Hz
Gigahertz (GHz) (CPUs, Wi-Fi & 5G cellular (10^9 Hz)) — 1 GHz = 1000000000 Hz
Terahertz (THz) (Infrared & spectroscopy (10^12 Hz)) — 1 THz = 1000000000000 Hz
Revolutions per Minute (RPM) (Motor & engine rotation) — 1 RPM = 0.016667 Hz
Radians per Second (rad/s) (Angular velocity (ω = 2πf)) — 1 rad/s = 0.159155 Hz
Degrees per Second (°/s) (Gyroscopes & rotational tracking) — 1 °/s = 0.002778 Hz

Popular Frequency Conversions

Hertz ⇄ Revolutions per Minute

Multiply Hertz by 60 to calculate Revolutions per Minute (RPM = Hz × 60).

Revolutions per Minute ⇄ Hertz

Divide RPM by 60 to find frequency in Hertz (Hz = RPM ÷ 60).

Gigahertz ⇄ Megahertz

1 gigahertz (GHz) contains exactly 1,000 megahertz (MHz).

Megahertz ⇄ Kilohertz

1 megahertz (MHz) contains exactly 1,000 kilohertz (kHz).

Radians per Second ⇄ Hertz

Divide radians per second by 2π (~6.283185) to calculate frequency in Hertz.

Frequently Asked Questions

Common questions and verified calculations for frequency units.

How do you convert RPM to Hertz (Hz)?

To convert RPM (revolutions per minute) to Hertz (cycles per second), divide by 60. For example, a car engine idling at 600 RPM is spinning at 10 Hz (600 ÷ 60 = 10 Hz).

How many megahertz are in a gigahertz?

There are exactly 1,000 megahertz (MHz) in 1 gigahertz (GHz). For example, a 3.5 GHz CPU processor clock runs at 3,500 MHz.

What is the relationship between frequency and angular velocity?

Angular velocity (ω, in radians per second) is related to cyclic frequency (f, in Hertz) by the formula: ω = 2πf. To convert rad/s to Hz, divide by 2π (approx. 6.283185).