Three quick calculators for everyday content and SEO work: reading time, keyword density, and content ROI. Everything runs in your browser — paste your text or numbers and the results update instantly. Nothing you enter leaves your device.
Reading time calculator
Paste your article to get word count and estimated reading time (238 words/minute, the average adult silent-reading rate).
Keyword density calculator
Check how often a term appears. Useful as a sanity check — not a target to optimize toward. Natural coverage beats repetition.
Rough guide: 0.5–2% for a primary term is typical of naturally written pages. Above ~3% usually reads as stuffing — see SEO mistakes to avoid.
Content ROI calculator
Estimate the monthly value a page generates versus what it cost. The method is explained in measuring content ROI.
Want a calculator we haven’t built? Tell us — the most-requested ones get built first. Meanwhile, the free tools cover metadata, schema, robots.txt, and sitemaps, and SEO KPIs that matter explains which numbers deserve your attention.