Physics & Engineering
Frequency Calculator
Convert frequency to wavelength, period, angular frequency & photon energy.
Frequency
Hz
Number of oscillations per second — pick a unit at top right
Wave Medium
Speed of sound in air (343 m/s at 20°C)
Audible
0%
Wavelength
0 m
distance between successive wave peaks
Period
0 s
Angular Frequency
0 rad/s
Photon Energy (EM)
0 eV
Wave Speed Used
0 m/s
📊 Full Conversion Table
| Quantity | Value |
|---|
How the formula works
λ = v ÷ f | T = 1 ÷ f | ω = 2πf | E = hf
- Wavelength (λ) = Wave Speed ÷ Frequency
- Period (T) = 1 ÷ Frequency — time for one full cycle
- Angular Frequency (ω) = 2π × Frequency, in radians per second
- Photon Energy (E) = Planck's constant × Frequency — only physically meaningful for electromagnetic waves
- Speed of light used: 299,792,458 m/s · Speed of sound in air used: 343 m/s