Online Calculators

Wavelength Calculator

Wavelength Calculator
$$\lambda = \dfrac{v}{f}$$
λ =
wavelength
units

Calculator Use

Choose a calculation for wavelength λ, velocity v or frequency f. Enter the other two values and the calculator will solve for the third in the selected units. You can also enter scientific notation such as 3.45e22.

Wavelength Equation for these Calculations:

$$\lambda = \dfrac{v}{f}$$

Where:
$$\lambda$$ = wavelength
$$v$$ = velocity
$$f$$ = frequency

Speed of Light = 299,792,458 m/s

The Wavelength Calculator uses the formula λ = v/f, or wavelength (λ) is equal to velocity (v) divided by frequency (f). The calculator can use any two of the values to calculate the third. Along with values, enter the known units of measure for each and this calculator will convert among units.

Significant Figures

For a value of 83456, selecting 4 significant figures will return 83460. For a value of 0.083456, selecting 4 significant figures will return 0.08346. See also our help notes on significant figures.

Wavelength calculations used in this calculator:

Solving for wavelength, velocity or frequency we can use the following formulas where wavelength is inversely proportional to frequency of the wave:

Calculate λ Given v and f
Calculate wavelength given velocity and frequency.

$$\lambda = \dfrac{v}{f}$$

Calculate v Given λ and f
Calculate velocity given wavelength and frequency. Calculation of the wave speed.

$$v = \lambda f$$

Calculate f Given v and λ
Calculate frequency given velocity and wavelength.

$$f = \dfrac{v}{\lambda}$$

Cite this content, page or calculator as:

Furey, Edward "Wavelength Calculator λ = v/f" at https://www.calculatorsoup.com/calculators/physics/wavelength.php from CalculatorSoup, https://www.calculatorsoup.com - Online Calculators