v = λ·f
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Wave Speed Calculator is an online tool that allows you to calculate the speed of a wave based on its wavelength (λ) and frequency (f). The formula used is v = λ·f, where v is the wave speed, λ is the wavelength, and f is the frequency. This formula is essential to understanding how waves propagate in different media, such as water, air, or strings.
The speed of a wave depends on the medium it propagates through and its characteristics, such as wavelength and frequency. The wavelength is the distance between two consecutive peaks or troughs of the wave, while the frequency is the number of oscillations per second. With the calculator, you can input the values of λ and f to obtain the wave speed in meters per second (m/s).
This calculator is useful in various situations, such as studying sound waves, electromagnetic waves, or mechanical waves. For example, when studying sound, you can calculate the speed of sound in air under different temperature and pressure conditions. When studying electromagnetic waves, you can calculate the speed of light in different media.
It's essential to be careful when using the calculator, as the input values must be in compatible units. Additionally, it's crucial to understand the context in which the formula is applied, as the wave speed can vary depending on the medium and conditions in which it propagates.
Frequently asked questions
What is the speed of a wave?
The speed of a wave is the rate at which it propagates through a medium, measured in meters per second (m/s).
What are the units of wavelength and frequency?
Wavelength is measured in meters (m) and frequency is measured in hertz (Hz).
How does temperature affect the speed of sound?
The speed of sound increases with temperature, as the air becomes less dense and easier to propagate sound.
Can I use this calculator for electromagnetic waves?
Yes, the calculator can be used for electromagnetic waves, such as light, as long as you input the correct values of wavelength and frequency.
What are the precautions when using the calculator?
It's essential to verify the units of the input values and understand the context in which the formula is applied.