Speed of Sound in Air Calculator

Calculate the speed of sound in dry air based on the temperature.

Input Parameters

Temperature

Unit

Calculation Results

Enter parameters to calculate

About this calculator

Quick Reference

vSpeed of sound (m/s)

TTemperature in °C

331.3Speed at 0 °C (m/s)

Overview

The speed of sound in an ideal gas depends only on its temperature. In air, the speed of sound is approximately 331.3 m/s at 0 °C.

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Pro Tips

The speed of sound increases as temperature increases.
Humidity has a very small effect on the speed of sound in air (usually less than 0.5%).
For most practical purposes, the linear approximation v ≈ 331.3 + 0.606 * T (°C) is sufficient.

Fun Facts

"Sound travels about 4.3 times faster in water than in air."
"Chuck Yeager was the first person to break the sound barrier (Mach 1) in 1947."
"In a vacuum, sound cannot travel at all because there is no medium to carry the vibration."

Formula: v = 331.3 * √(1 + T / 273.15)