# Wavelength Calculator

Enter the value of frequency, select the unit of frequency, and hit the calculate button to find the value of the wavelength.

Formula:
λ = C f

## Wavelength Calculator

Wavelength calculator is used to calculate the value of wavelength that is based on the value of its frequency and the default value of the speed of light.

## What is the wavelength?

The wavelength is the distance between two adjacent crests/troughs of any wave. It can be measured in meters and it can be represented by the Greek letter (lambda) “`λ`”.

## Formula of the Wavelength

Its mathematical formula can be defined as,

`λ = C/f`

Where,

• `C` = speed of the light = 299,792,458 m/s ≈ 3 × 10⁸ m/s
• `f `= frequency of the wave

## How to calculate the wavelength?

Example 1

Find the value of the wavelength if the sound wave travels with the frequency of 70 Hz.

Solution

Step 1: Write the value of the frequency.

f = 70,                 λ =?

Step 2: Put the values of the frequency in the wavelength formula.

λ = C/f

= 299,792,458 /70

`λ = 4282749.4 m`

Example 2

Find the value of the wavelength if the sound wave travels with a frequency of 90 kHz.

Solution:

Step 1: Write the value of the frequency and convert it into “Hz” form.

f = 90 KHz = 90 × 103Hz,                          λ =?

Step 2: Put the values of the frequency in the wavelength formula.

λ = C/f

= 299,792,458 /90 × 103

Taken the “103” at the numerator place.

= 299,792,458 × 10-3/90

= 4282749.4 × 10-3 m

Multiply the “10-3” with the given number.

`λ = 4282.7494 `