Frequency and Wavelength Calculator
The Frequency and Wavelength Calculator solves the fundamental wave equation v = f × λ in any direction. Enter any two of frequency, wavelength, or wave speed to calculate the third. Includes preset wave speeds for light in vacuum (3×10⁸ m/s), sound in air (343 m/s), and sound in water (1480 m/s). Also calculates wave period T = 1/f and identifies the region of the electromagnetic spectrum.
waves Wave Parameters
Quick Presets
analytics Results
Wave Equation
v = f × λ
auto_awesome AI Analysis
Powered by ClaudeEnter your values and calculate to receive AI-powered insights about your results.
lightbulb Tips
- •v = f × λ — the fundamental wave equation
- •Higher frequency = shorter wavelength
- •Visible light: 380 nm (violet) to 700 nm (red)
- •FM radio ≈ 3 m wavelength at 100 MHz
waves EM Spectrum
The Formula
Wave speed equals frequency times wavelength. Higher frequency = shorter wavelength for the same medium. Period is the reciprocal of frequency.
v = f × λ | T = 1/f | E = h·f (photon energy)
lightbulb Variables Explained
tips_and_updates Pro Tips
Light in vacuum: c = 299,792,458 m/s ≈ 3×10⁸ m/s
Sound in air at 20°C: ~343 m/s (varies with temperature)
Higher frequency = shorter wavelength (inverse relationship)
Visible light: 380 nm (violet) to 700 nm (red)
FM radio: 88–108 MHz → wavelengths of 2.8–3.4 m
Frequently Asked Questions
Related Tools
View all Engineering View all arrow_forwardTags
Data sourced from trusted institutions
All formulas verified against official standards.