Reading Calculator

Different tools use different default reading speeds — some use 200 WPM, others 250 WPM, and ReadCalc uses 225 WPM. They also vary in how they count words (e.g., whether numbers or symbols count as words) and whether they round up or down. ReadCalc gives you control: adjust the WPM slider to match any other calculator's assumptions.

The average adult reads silently at roughly 200–250 WPM for standard text. Technical or academic material drops to 125–175 WPM, while light fiction can hit 300+ WPM. Speed readers may reach 400–700 WPM, though comprehension typically drops above 400. ReadCalc's default of 225 WPM is a balanced middle ground for general content.

No. ReadCalc is 100% client-side — your text never leaves your browser. The only data stored is in your browser's localStorage: (1) a draft restore so your text reappears if you refresh, and (2) your last 5 analysis sessions. Both are stored locally on your device and are never transmitted to any server. You can clear them anytime by clearing your browser data.

ReadCalc uses well-established formulas. Reading and speaking times are simple word-count ÷ WPM calculations. The grade level score uses the Flesch-Kincaid formula, the same one used in Microsoft Word and standard readability tests. Real-world reading time varies by person, content difficulty, and screen vs. paper — so treat the estimate as a solid baseline, not a stopwatch.