Frequency Calculator

Give frequency in Hertz

Frequency Hz KHz MHz GHz THz PHz EHz

Calculate frequency!

Frequency ↔ wavelength

Hertz

Cycles per second

440Hz

Power of 10

Log₁₀ (a.k.a. 'orders of magnitude')

2.6435

Power of 2

Log₂ (a.k.a. 'octaves')

8.7814

Cycle duration

1 / hertz = time/cycle

2.27msec

Wavelength

Speed of sound = 343 m/s (20 °C, air)

0.78m

Electro-Magnetic Spectrum

Audio spectrum

• Frequency:
  1Hz - 20KHz
• Wavelength:
  14.99Km - 299.79Mm

Ultrasonic

• Frequency:
  20.1KHz - 100KHz
• Wavelength:
  3Km - 14.92Km

Examples

Blue (visible light)

Infra-red

AM Radio

FM Radio

UHF TV

Wifi 11a

Wifi 11g

X-ray

References

Infrared

Hertz

Speed of Sound