How to Calculate Speed of Sound

What is Speed of Sound?

The speed of sound depends on the medium and temperature. In dry air at 20°C it is approximately 343 m/s. It is much faster in water and steel.

Formula

Speed of sound ≈ 331.3 + 0.606 × T(°C) m/s | Dry air at sea level | Faster in denser media (water, steel)

Step-by-Step Guide

1Speed in air = 331.3 × √(1 + T°C/273.15) m/s
2Increases ~0.6 m/s per °C in air
3In water at 20°C: ~1,482 m/s
4In steel: ~5,960 m/s

Worked Examples

Input

Air temperature 30°C

Result

Speed = 331.3 × √(303.15/273.15) = 349 m/s = 1,256 km/h

Frequently Asked Questions

What is Speed Of Sound?

The speed of sound depends on the medium and temperature. In dry air at 20°C it is approximately 343 m/s

How accurate is the Speed Of Sound calculator?

The calculator uses the standard published formula for speed of sound. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Speed Of Sound calculator use?

This calculator works with inches, Celsius. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Speed Of Sound calculator use?

The core formula is: Speed in air = 331.3 × √(1 + T°C/273.15) m/s. Each step in the calculation is shown so you can verify the result manually.

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