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Aug 10, 2026
Why Your Reading Time Estimate Is Wrong — Reading Speed Research, Word Count Inconsistency, and Character Limits That Actually Matter
The "238 wpm average reading speed" is a median for typical adult prose — the same reader might halve their speed on technical documentation with unfamiliar terminology, and skimming reaches 450-700 wpm with substantially lower comprehension. Here's why domain expertise speeds up reading of specialist content, why the same essay shows different word counts in different tools (hyphenated compounds, URL handling), the LLM token-to-word ratio that matters for API cost estimation, and why Flesch-Kincaid scores miss vocabulary familiarity and conceptual complexity entirely.