How do I convert MHz to GHz?

Divide by 1,000. For example, 2,400 MHz = 2.4 GHz. Each step up in prefix (Hz → kHz → MHz → GHz → THz) divides by 1,000.

What is the relationship between frequency and period?

Frequency and period are inversely related: period = 1/frequency. If a signal has a frequency of 1 MHz (1,000,000 Hz), its period is 1 microsecond (1/1,000,000 s). Higher frequency = shorter period.

What frequency is WiFi?

WiFi operates on two main bands: 2.4 GHz (2,400 MHz) and 5 GHz (5,000 MHz). WiFi 6E adds the 6 GHz band. Higher frequency provides more bandwidth but shorter range.

What does Hertz (Hz) measure?

Hertz measures frequency in cycles per second. Named after Heinrich Hertz, 1 Hz = 1 cycle per second. It applies to electromagnetic waves, sound waves, electrical signals, processor clocks, and any periodic phenomenon.

One gigahertz = 1 billion cycles per second. In a CPU, this means 1 billion clock ticks per second. The period of 1 GHz is 1 nanosecond (one billionth of a second).

What is the frequency of visible light?

Visible light ranges from about 430 THz (red) to 770 THz (violet). This is far beyond radio frequencies. Infrared is below visible (300 GHz–430 THz) and ultraviolet is above (770 THz–30 PHz).

Frequency Converter

Convert frequency between Hz, kHz, MHz, GHz, and THz. Each step scales by 1000. Also shows period in seconds and milliseconds.

Convert From

Frequency

Hertz (Hz)

2,400,000,000.00

Kilohertz (kHz)

2,400,000.00

Gigahertz (GHz)

2.40

Terahertz (THz)

0.00

Period

0.42 ns

Planning notes, formulas, and examples

About the Frequency Converter

The Frequency Converter converts between Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz), and Terahertz (THz). It also calculates the corresponding period (time per cycle) in seconds, milliseconds, microseconds, or nanoseconds.

Frequency measures how many cycles occur per second. Each prefix step multiplies by 1,000: 1 kHz = 1,000 Hz, 1 MHz = 1,000,000 Hz, 1 GHz = 1,000,000,000 Hz. Frequency and period are inversely related: period = 1/frequency.

This converter is essential for electronics engineers, radio operators, audio professionals, and IT professionals working with processor speeds, wireless signals, and audio sampling rates. Enter a frequency in any unit and see all equivalents plus the period.

When This Page Helps

Engineers and technicians work across Hz, kHz, MHz, and GHz depending on the application. It shows instant cross-unit conversion with the bonus of period calculation.

How to Use the Inputs

Select the frequency unit you are converting from.
Enter the frequency value.
View equivalents in all other frequency units.
Check the period (time per cycle) in appropriate time units.
Use for radio, audio, CPU, and signal frequency conversions.

Formula used

Scale factors: 1 kHz = 10³ Hz, 1 MHz = 10⁶ Hz, 1 GHz = 10⁹ Hz, 1 THz = 10¹² Hz.
Period (seconds) = 1 / frequency (Hz)
Period (ms) = 1000 / frequency (Hz)

Example Calculation

Result: 2,400 MHz / 2,400,000 kHz

2.4 GHz = 2.4 × 10⁹ Hz = 2,400 MHz = 2,400,000 kHz. Period = 1/(2.4×10⁹) = 0.417 nanoseconds. This is the frequency of WiFi 2.4 GHz band and common microwave ovens.

Tips & Best Practices

WiFi: 2.4 GHz and 5 GHz bands. Bluetooth: 2.402–2.48 GHz.
Human hearing range: 20 Hz to 20 kHz. Musical A4 = 440 Hz.
FM radio: 88–108 MHz. AM radio: 530–1700 kHz.
CPU speeds are measured in GHz: a 3.5 GHz processor completes 3.5 billion cycles per second.
Audio CD sample rate: 44.1 kHz. Studio audio: 96 or 192 kHz.

The Frequency Spectrum

The electromagnetic spectrum spans from extremely low frequencies (ELF, 3–30 Hz) to gamma rays (above 30 EHz). Radio frequencies occupy 3 Hz to 300 GHz and are subdivided into bands: VLF, LF, MF, HF, VHF, UHF, SHF, and EHF. Each band has distinct propagation characteristics and applications.

Frequency in Audio Engineering

Audio frequencies range from 20 Hz (sub-bass) to 20 kHz (high treble). Bass: 60–250 Hz. Midrange: 250 Hz–4 kHz. Treble: 4–20 kHz. Sampling rates must be at least double the highest frequency (Nyquist theorem): 44.1 kHz captures up to 22.05 kHz.

Frequency in Digital Electronics

CPU clock speeds, memory bus rates, and serial communication baud rates are all frequencies. Modern CPUs run at 3–5 GHz. DDR5 RAM operates at 4,800–8,400 MHz. USB 3.2 Gen 2 runs at 10 Gbps using frequencies around 5 GHz.

Sources & Methodology

Last updated: February 8, 2026

Frequently Asked Questions

Divide by 1,000. For example, 2,400 MHz = 2.4 GHz. Each step up in prefix (Hz → kHz → MHz → GHz → THz) divides by 1,000.