Frequency Calculator

Give frequency in Hertz

Frequency Hz KHz MHz GHz THz PHz EHz

Calculate frequency!

Frequency ↔ wavelength

Hertz

Cycles per second

299.79THz

Power of 10

Log₁₀ (a.k.a. 'orders of magnitude')

14.4768

Power of 2

Log₂ (a.k.a. 'octaves')

48.0909

Cycle duration

1 / hertz = time/cycle

3.34fsec

Wavelength

Speed of light = 299 792 km/s

1µm

Electro-Magnetic Spectrum

Far Infrared (FIR)

• Frequency:
  400GHz - 20THz
• Wavelength:
  14.99µm - 0.75mm

Long-wavelength Infrared (IR-C)

• Frequency:
  20THz - 37THz
• Wavelength:
  8.1µm - 14.99µm

Mid-wavelength Infrared (IR-C)

• Frequency:
  37THz - 100THz
• Wavelength:
  3µm - 8.1µm

Short-wavelength Infrared (IR-B)

• Frequency:
  100THz - 214THz
• Wavelength:
  1.4µm - 3µm

Near Infrared (IR-A)

• Frequency:
  214THz - 400THz
• Wavelength:
  0.75µm - 1.4µm

IR-C	IR-B	IR-A	red	orange	yellow	green	blue	violet	UVA	UVB	UVC
300 GHz – 100 THz	100 THz – 215 THz	215 THz – 430 THz	450 THz	500 THz	515 THz	545 THz	650 THz	750 THz	750THz - 951THz	951THz - 1.07PHz	1.07PHz - 2.5PHz

Examples

Blue (visible light)

Infra-red

AM Radio

FM Radio

UHF TV

Wifi 11a

Wifi 11g

X-ray

References

Infrared

Hertz

Speed of Sound