Speech Time Calculator

A text-to-speech duration calculator estimates how long spoken audio will be from a piece of text. Average conversational speaking is 130–160 words per minute

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

This calculator works with inches, miles per hour, percentages, watts. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Duration (min) = Word count / WPM. Each step in the calculation is shown so you can verify the result manually.