Wave Frequency and Wavelength Calculator
Calculate wave frequency, wavelength, or speed using the fundamental wave equation.
🌊 Physics📐 v = f × λ
Wave speed (m/s)
Frequency (Hz) — or 0
Wavelength (m) — or 0
Please enter valid values.
Formula & Reference
| Variable | Formula | Units |
|---|---|---|
| Wave Frequency and Wavelength Calculator | v = f × λ | Hz / m |
Step-by-Step Examples
Example 1
A440 Sound
Speed 343 m/s, freq 440 Hz.
- λ = 343/440 = 0.780 m — middle A note
✓ λ = 0.780 m
Example 2
FM Radio 100MHz
Speed 3e8 m/s, freq 1e8 Hz.
- λ = 3e8/1e8 = 3 m — FM radio wavelength
✓ λ = 3 m
Example 3
Green Light
Speed 3e8, wavelength 5e-7 m.
- f = 3e8/5e-7 = 6×10¹⁴ Hz — visible light
✓ f = 6×10¹⁴ Hz
Real-World Applications
Music Students
Calculate sound wave properties for musical notes.
Engineers
Calculate radio wavelengths and antenna lengths.
Physicists
Analyze electromagnetic wave properties.
Students
Master the fundamental wave equation.
Common Mistakes to Avoid
⚠️
Confusing frequency and wavelength
Frequency = waves per second (Hz). Wavelength = length of one wave (m). Inversely related at constant speed.
⚠️
Wrong wave speed
Sound: 343 m/s in air. Light: 3×10⁸ m/s. Don't mix types.
Frequently Asked Questions
Human hearing range? ▾
20 Hz to 20,000 Hz.
Visible light wavelengths? ▾
380 nm (violet) to 700 nm (red).
Doppler effect? ▾
Moving source shifts observed frequency. Approaching = higher pitch, receding = lower.