Convert frequency between Hz, kHz, MHz, GHz, and THz. Each step scales by 1000. Also shows period in seconds and milliseconds.
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.
Precise measurement of this value supports better personal and professional planning, helping you make informed decisions about how to prioritize tasks and manage competing demands. Quantifying this parameter enables meaningful comparison across time periods and projects, revealing trends that inform better decisions about personal productivity and resource management.
Engineers and technicians work across Hz, kHz, MHz, and GHz depending on the application. This converter provides instant cross-unit conversion with the bonus of period calculation. Having accurate figures readily available simplifies project planning, deadline negotiation, and workload balancing conversations with managers, clients, and team members. Consistent measurement creates a reliable baseline for evaluating personal efficiency and identifying the habits and practices that contribute most to achieving professional goals.
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)
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.
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.
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.
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.
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.
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.
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.
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).
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).