Frequency Converter

22 units

Convert between hertz, kilohertz, megahertz, RPM, wavelengths, and specialized frequency measurements. Professional tool for engineers, scientists, and audio professionals.

Frequency Input
Enter the frequency value you want to convert
Conversion Results
Converted frequency value in your selected unit
Complete Frequency Conversion Guide

Frequency conversion involves understanding oscillations, cycles, and periodic phenomena across various domains. This comprehensive guide covers all aspects of frequency measurement systems used in electronics, physics, and engineering.

Basic Concepts

  • • Frequency = 1 / Period
  • • Measured in Hertz (Hz)
  • • Angular frequency = 2π × frequency

Applications

  • • Electronics and circuits
  • • Audio and acoustics
  • • Radio and communications
Understanding Frequency Measurement Systems

Frequency Domains

Audio Range

20 Hz to 20 kHz - Human hearing range

  • • Bass: 20-250 Hz
  • • Midrange: 250 Hz-4 kHz
  • • Treble: 4-20 kHz

Radio Spectrum

3 kHz to 300 GHz - Radio communications

  • • AM Radio: 535-1605 kHz
  • • FM Radio: 88-108 MHz
  • • WiFi: 2.4/5 GHz

Measurement Standards

SI Base Unit

The hertz (Hz) is the SI unit for frequency, defined as one cycle per second. It's named after Heinrich Hertz, who proved the existence of electromagnetic waves.

Precision Standards

Atomic clocks use cesium-133 transitions (9,192,631,770 Hz) as the time standard, providing extremely precise frequency references for scientific and technological applications.

Essential Conversion Factors

Frequency Prefixes

1 kHz:1,000 Hz
1 MHz:1,000,000 Hz
1 GHz:1,000,000,000 Hz

Rotational Conversions

1 RPM:1/60 Hz
60 RPM:1 Hz
3600 RPM:60 Hz

Angular Frequency

ω = 2πf:rad/s
1 Hz:2π rad/s
360°/s:1 Hz
Professional Applications

Electronics

  • • Clock signal design
  • • Filter specifications
  • • Oscillator circuits
  • • Signal processing

Audio Engineering

  • • Equalizer settings
  • • Crossover design
  • • Sampling rates
  • • Acoustic analysis

RF Engineering

  • • Antenna design
  • • Channel allocation
  • • Modulation schemes
  • • Spectrum analysis

Mechanical

  • • Motor speed control
  • • Vibration analysis
  • • Pump operations
  • • Turbine monitoring
Common Frequency Examples

Audio Frequencies

Middle C:261.63 Hz
Concert A:440 Hz
Human Voice:85-255 Hz
CD Quality:44.1 kHz

Power & Industrial

AC Power (US):60 Hz
AC Power (EU):50 Hz
Aircraft Power:400 Hz
Motor Speed:1800 RPM

Radio & Communications

AM Radio:535-1605 kHz
FM Radio:88-108 MHz
WiFi 2.4G:2.4 GHz
5G Cellular:28 GHz
Frequently Asked Questions

What's the relationship between frequency and wavelength?

Frequency and wavelength are inversely related: f = c/λ, where c is the speed of light (299,792,458 m/s). Higher frequencies have shorter wavelengths, and vice versa.

How do I convert RPM to Hz?

Divide RPM by 60 to get Hz. For example, 1800 RPM ÷ 60 = 30 Hz. This is useful for motor speeds, turbines, and rotating machinery analysis.

Why are there different power grid frequencies worldwide?

Historical reasons led to 50 Hz (Europe, Asia) and 60 Hz (Americas) standards. 60 Hz provides slightly better motor performance, while 50 Hz is more efficient for transmission.

What's the difference between angular frequency and regular frequency?

Angular frequency (ω) is measured in radians per second, while regular frequency (f) is in cycles per second (Hz). The relationship is ω = 2πf. Angular frequency is commonly used in physics and engineering calculations.