Speed Of Sound Calculator
Use the Speed Of Sound Calculator for a transparent, instant calculation with validated inputs and cited sources. For a query such as “what is the speed of voice”, enter the matching values and units below and review the stated assumptions.
How to use this calculator
Enter the requested values and units.
Review the assumptions and any warnings shown with the result.
Use the result together with the cited source and your real-world requirements.
Formula
Dry-air speed estimate = 331.3 × √[(temperature in °C + 273.15) ÷ 273.15] m/s.
Worked example
Worked example: Inputs: Dry-air temperature: 20 °C. Outputs: Ideal-gas approximation: 343.214623 m/s.
Assumptions and limits
- The result depends on the values, units, and assumptions entered. It does not infer missing context.
Sources
- NASA Glenn Research Center: Speed of SoundReference material reviewed for the stated method, units, or domain. Confirm that its scope matches your use case. Reviewed 2026-08-14.
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Frequently asked questions
How does the Speed Of Sound Calculator work?
Dry-air speed estimate = 331.3 × √[(temperature in °C + 273.15) ÷ 273.15] m/s.
What should I enter?
Dry-air temperature
What should I verify?
Review the assumptions and any warnings shown with the result. The result depends on the values, units, and assumptions entered. It does not infer missing context.
Last updated 2026-08-14 · science-speed-of-sound-v1 · opportunity-content-2026-08-14 · Trusty Calculator Editorial Team