# Frequency Converter

Free frequency converter. Convert between hertz, kilohertz, megahertz, gigahertz, terahertz, RPM, and radians per second.

## What this calculates

Convert between all common frequency units including hertz, kilohertz, megahertz, gigahertz, terahertz, RPM, and radians per second. Essential for electronics, physics, and engineering.

## Inputs

- **Value** — min 0
- **From** — options: Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz), Terahertz (THz), RPM (rev/min), RPS (rev/sec), Rad/s
- **To** — options: Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz), Terahertz (THz), RPM (rev/min), RPS (rev/sec), Rad/s

## Outputs

- **Result** — The converted frequency value.
- **Conversion** — formatted as text — Step-by-step conversion explanation.

## Details

Frequency measures how often an event repeats per unit of time. The SI unit is hertz (Hz), equal to one cycle per second.

Key Conversion Factors

- 1 kHz = 1,000 Hz

- 1 MHz = 1,000,000 Hz

- 1 GHz = 1,000,000,000 Hz

- 1 THz = 1,000,000,000,000 Hz

- 1 RPM = 1/60 Hz

- 1 rad/s = 1/(2π) Hz ≈ 0.15915 Hz

Common Frequency Ranges

- Human hearing: 20 Hz to 20 kHz

- AM radio: 530 kHz to 1.7 MHz

- FM radio: 87.5 MHz to 108 MHz

- Wi-Fi: 2.4 GHz and 5 GHz

- CPU clock speeds: 1-5 GHz

## Frequently Asked Questions

**Q: How do I convert MHz to GHz?**

A: Divide the MHz value by 1,000. For example, 2,400 MHz = 2.4 GHz. This is common when discussing Wi-Fi frequencies, where 2.4 GHz = 2,400 MHz and 5 GHz = 5,000 MHz.

**Q: How do I convert RPM to Hz?**

A: Divide the RPM value by 60. For example, 3,600 RPM = 3,600/60 = 60 Hz. This is relevant in power generation: a generator spinning at 3,600 RPM produces 60 Hz electricity (US standard).

**Q: What is the relationship between frequency and wavelength?**

A: Frequency and wavelength are inversely related through the wave speed: wavelength = speed / frequency. For electromagnetic waves (light, radio), speed = c ≈ 3 × 10^8 m/s. So a 100 MHz FM signal has a wavelength of about 3 meters.

**Q: What is the difference between Hz and RPM?**

A: Both measure rotational frequency, but Hz counts cycles per second while RPM counts revolutions per minute. 1 Hz = 60 RPM. RPM is more intuitive for mechanical applications (engines, motors), while Hz is standard in physics and electronics.

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Source: https://vastcalc.com/calculators/conversion/frequency-conversion
Category: Conversion
Last updated: 2026-04-21