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# Distance Sound has Traveled

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Equation / Last modified by Administrator on 2018/08/26 07:06
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The **Distance Sound Traveled **calculator computes the distance sound has traveled based on the speed of sound and the duration of travel.

**INSTRUCTIONS**: Choose units and enter the following:

- (
**V**) This is the local speed of sound - (
**t**) This is the duration of the travel

**Distance Sound Traveled (d):** The calculator returns the distance in meters. However this can be automatically converted to compatible unit via the pull-down menu.

#### Related Calculators

- Mach Number from Velocity and Local Speed of Sound
- Mach Number from Velocity, Density and Bulk Modulus
- Speed of Sound in Dry Air
- Knudsen Number
- Distance Sound has Traveled

#### The Math / Science

Have you ever guessed how far away lightning is by counting seconds from the flash until you heard the boom? What you've done is made a estimate of the distance sound has traveled in a period of time. The formula for the distance sound has traveled is :

d = V • t

where:

- d is the distance sound has traveled
- V is the local speed of sound
- t is the time duration of travel

The Speed of Sound in dry air is 343.2 meters per second.