Frequency Converter — Free Online Tool

Convert Hz, kHz, MHz, GHz, RPM and radians per second. Frequency Converter is a free online tool from the ToolsRift Unit Converters collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.

Loading Frequency Converter…

How to use Frequency Converter

  1. Open the Frequency Converter above — it loads instantly, no account needed.
  2. Enter or upload your input. Everything is processed locally on your device.
  3. Get your result immediately and copy or download it with one click.

Frequently asked questions

How many Hz in a kHz?

1 kilohertz (kHz) = 1,000 hertz (Hz).

How do I convert RPM to Hz?

Divide RPM by 60. For example, 1,200 RPM = 20 Hz (rotations per second).

What frequency is human hearing?

Humans typically hear from about 20 Hz to 20,000 Hz (20 kHz).

More Unit Converters

Fuel Economy Converter
Convert MPG (US/UK), km/L and L/100km for fuel efficiency
Torque Converter
Convert N·m, lb·ft, lb·in, kg·m and other torque units
Force Converter
Convert Newtons, pound-force, kilogram-force, dynes and more
Illuminance Converter
Convert lux, foot-candles, phot and other light intensity units
Density Converter
Convert kg/m³, g/cm³, g/mL, lb/ft³ and lb/in³
Flow Rate Converter
Convert m³/s, L/min, GPM, CFM and other volumetric flow rates

← View all Unit Converters