Skip to main content
Calculator Answers

Frequency Converter

Blake Boege
Written by Blake Boege · Founder, Calculator Answers

A frequency converter is a physical measurement utility that translates rate-of-occurrence values between different units of frequency. The converter supports conversions across hertz (Hz), kilohertz (kHz), megahertz (MHz), gigahertz (GHz), revolutions per minute (RPM), and radians per second (rad/s). It applies precise mathematical constants and scale factors to guarantee conversion accuracy. Electronic engineers, physicists, telecommunications technicians, and students use this tool to standardize signal frequencies and mechanical rotation speeds.

Pick a 'from' unit and a 'to' unit, enter a value, and the converter returns all common frequency units, including mechanical rotation expressed in RPM.

See also: Density Converter, Torque Converter, and Fuel Economy Converter.

Quick Answer

Convert frequency measurements between scientific and computing units. Enter your value and select units to calculate conversions across hertz, kilohertz, and gigahertz.

Decimals and very large numbers are fine. · e.g. 100

Internal base unit is the hertz. cpm and RPM are mechanical rotation units equal to 1/60 Hz.

Frequency

Megahertz → Gigahertz

0.1 GHz

100 MHz = 0.1 GHz

Hertz (Hz)100,000,000 Hz
Kilohertz (kHz)100,000 kHz
Megahertz (MHz)100 MHz
Gigahertz (GHz)0.1 GHz
Terahertz (THz)0.0001 THz
Cycles per minute (cpm)6.0000e+9 cpm
Revolutions per minute (RPM)6.0000e+9 rpm

1 kHz = 1,000 Hz; 1 MHz = 1,000,000 Hz; 1 GHz = 10⁹ Hz; 1 THz = 10¹² Hz. 1 RPM = 1 cycle/min = 1/60 Hz.

Was this helpful?

Examples

5 GHz

= 5,000 MHz; 5 × 10⁹ Hz

60 Hz (US mains)

= 3,600 RPM

1 RPM

= 1/60 Hz ≈ 0.0167 Hz

1 THz

= 1,000 GHz; 10¹² Hz

How it works

Each frequency unit is defined by its size in hertz. The converter multiplies the input by the factor (in Hz), then divides by the target factor.

SI prefixes · k = 10³, M = 10⁶, G = 10⁹, T = 10¹²

Rotation · 1 RPM = 1 cycle/min = 1/60 Hz

Related calculators

Related Calculators

More tools from Unit Converters

Density ConverterConvert density between kg/m³, g/cm³, g/mL, lb/ft³, lb/in³, and lb/gal US. Handy for materials, chemistry, and bulk-material orders.Torque ConverterConvert torque between newton metres (N·m) and pound-feet (lb·ft, also written ft-lb or ft lbs), plus pound-inches, ounce-inches, kilonewton metres and kilogram-force metres.Fuel Economy ConverterConvert fuel economy between US mpg, Imperial mpg, kilometers per liter, miles per liter, and L per 100 km. Handles the inverse relationship of L/100 km carefully and requires positive values.Power ConverterConvert between watts, kilowatts, megawatts, mechanical horsepower, BTU per hour, and foot-pounds per second. Useful for engineering, HVAC, and physics homework.

Frequently asked questions

1 hertz (Hz) is one cycle per second. Higher units (kHz, MHz, GHz, THz) scale by 1,000 each step. RPM (revolutions per minute) and cycles per minute are mechanical equivalents at 1/60 Hz.

1,000. The SI prefix chain is k (10³), M (10⁶), G (10⁹), T (10¹²). 5 GHz = 5,000 MHz = 5,000,000 kHz = 5 × 10⁹ Hz.

Same dimension, different unit. 1 Hz = 60 RPM. A 3,000 RPM engine is rotating at 50 Hz. The converter treats RPM and cpm identically since they are both 1/60 Hz.

Angular frequency ω is 2π × f. This converter handles ordinary frequency in cycles per unit time, not angular frequency in rad/s. For angular work, convert your result by multiplying by 2π.