My audio editor says '44.1 kHz sample rate.' What does that mean in Hz?

44.1 kHz = 44,100 Hz. The audio is sampled 44,100 times per second. This is the CD standard (can capture up to ~22 kHz, half the sample rate).

The power outlet is 50 Hz. How many kilohertz is that?

50 Hz = 0.05 kHz. This is extremely low frequency (ELF). Standard AC power is 50 Hz (Europe/Asia) or 60 Hz (Americas).

What's the difference between Hz, kHz, and MHz?

1 kHz = 1,000 Hz, 1 MHz = 1,000 kHz = 1,000,000 Hz. Used for radio (MHz), audio (kHz), power (Hz), and computer clocks (GHz = billion Hz). See [kHz to MHz](/frequency/khz-to-mhz/) for higher-frequency conversions.

Can humans hear 1 kHz?

Yes. 1 kHz (1,000 Hz) is well within human hearing range (20 Hz to 20 kHz). Most conversation happens 100-8,000 Hz.

Hertz (Hz) to Kilohertz (kHz) Converter

Enter a value to instantly convert between frequency units.

From

Precision4 dp

1 Hertz = 0.001 Kilohertz

Key Formulas

Hertz → Kilohertz

kHz = Hz × 0.001

Kilohertz → Hertz

Hz = kHz × 1000

Megahertz → Gigahertz

GHz = MHz × 0.001

Gigahertz → Megahertz

MHz = GHz × 1000

Formula

kHz = Hz ÷ 1000

Hertz (Hz) measures frequency—cycles per second. Kilohertz (kHz) is 1,000 Hz. Audio frequencies are often expressed in kHz (radio stations, audio sample rates). Converting between them helps you understand sound specifications and radio bands.

Source: ISO 80000-3:2019 (Space and time)

Frequently Asked Questions

Real-World Examples

One kilohertz. By definition, 1 kHz = 1,000 Hz. Used for audio, radio, and AC power.

1000 Hz = 1 kHz

Upper human hearing limit. Most people hear up to 20 kHz. Audio is sampled at 44.1 kHz or higher to capture this range.

20000 Hz = 20 kHz

Extremely low frequency. 50 Hz is the AC power frequency in Europe. 0.05 kHz.

50 Hz = 0.05 kHz

FM radio station. Station '101.5 FM' broadcasts at 101.5 MHz = 101,500 kHz.

101500 Hz = 101.5 kHz

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Hertz (Hz) to Kilohertz (kHz) Converter

Key Formulas

Formula

Frequently Asked Questions

Real-World Examples

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