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The 250 wpm silent default sits in the middle of the adult reading-speed distribution documented in the Nature Neuroscience meta-analysis. Nature Neuroscience: reading speed distribution.
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How Reading Time Is Calculated
Where 250 words per minute comes from, how age and complexity move it, and how the calculator applies it live.
The default: 250 wpm silent
Reading-speed research consistently lands adult silent reading at 200 to 300 words per minute on moderately complex material. 250 is the middle of that range and the industry default for lede labels and reading-time estimates.
Speaking pace: 130 wpm
The National Center for Voice and Speech puts average conversational English at 150 wpm. Presentation pace runs slower, 120 to 140. 130 is the default for the speaking-time chip; slide it to match your voice.
Podcast pace: 160 wpm
Sustained podcast delivery lands 150 to 170 wpm. Audiobook narration runs slightly slower, 140 to 160. This is a working default; the wpm slider adjusts.
What changes it
- Age: 6 to 8-year-olds read 80 to 120 wpm silently. 12-year-olds 150. Adults 200 to 300.
- Subject: technical, math-heavy, or legal text drops silent pace by 30 to 50 percent.
- Format: long passages on a phone drop pace by 10 to 15 percent versus paper.
- Fluency: readers in a second language read 40 to 60 percent slower.
Try the calculator
Paste text into the reading time calculator. Adjust the three sliders (silent, speaking, podcast) to match your audience or your voice.