waves
Wave Speed, Frequency and Wavelength
Solve v = fλ for wave speed, frequency, or wavelength.
Calculator
Formula
v = f λ
- v — Wave speed
- m/s · km/h
- f — Frequency
- Hz · kHz
- λ — Wavelength
- m · cm · mm · km
Assumptions and limits
- Frequency and wavelength refer to the same wave in a uniform medium.
Example
A 440 Hz sound wave at 343 m/s
Choose “Load example” in the calculator to restore these inputs and see the complete steps.
Sources
- University Physics Volume 1 — OpenStax
Frequently asked questions
Are my inputs uploaded?
No. This calculator runs locally in your browser. Inputs are placed in a URL only when you explicitly copy a share link.
Why are units converted first?
Canonical units prevent scale errors when inputs use mixed units. The result is converted back to your selected output unit afterward.
Does the result replace professional judgment?
No. The result applies only to the stated model and assumptions. Qualified people should review high-risk engineering, medical, or laboratory decisions.