Almost every "X minute read" label at the top of an article is quietly built on a number that's wrong. Most reading-time estimates assume the average adult reads at 300 words per minute — a figure that's been repeated so often it feels like established fact. It isn't, and the real number changes those labels more than you'd expect.
How Word Counting Works
Words are counted by splitting text on whitespace characters (spaces, tabs, newlines). Hyphenated words (e.g., "well-known") typically count as one word, as do compound words. The counter above tracks: words (space-delimited tokens), characters (every character including spaces), characters without spaces, sentences (ending in ., !, or ?), paragraphs (blocks separated by line breaks), and estimated reading time.
Character Limits by Platform
| Platform | Limit | Notes |
|---|---|---|
| Twitter/X post (free) | 280 characters | X Premium extends this to ~25,000 |
| Instagram caption | 2,200 characters | Only ~125 visible before "more" |
| LinkedIn post | 3,000 characters | ~210 chars visible before "see more" |
| Facebook post | 63,206 characters | No practical limit |
| Google meta title | 50–60 characters | Beyond = truncated in SERPs |
| Google meta description | 155–160 characters | Google rewrites it 60-80% of the time regardless |
| SMS text message | 160 characters | Over = splits into multiple billed messages |
| Google Ads headline | 30 characters | Hard limit |
Reading Time Estimation
The counter above estimates reading time using a research-backed rate rather than the commonly repeated 300 WPM figure — see below for why that distinction matters. A 1,000-word article at a realistic adult reading pace takes a bit over 4 minutes to read. A 2,500-word blog post runs closer to 10-11 minutes. These estimates help set reader expectations through "X minute read" labels, common at the top of blog posts and news articles.
💡 The "300 words per minute" figure cited practically everywhere is outdated. A 2019 meta-analysis by Marc Brysbaert, reviewing 190 separate studies and nearly 18,000 participants, found the real average silent reading speed for adult non-fiction is closer to 238 words per minute — fiction runs slightly faster, around 260 WPM, because its vocabulary tends to use shorter, more familiar words. The inflated 300 WPM number traces back to smaller, older, non-representative studies (often just college students, who read faster than the general population) that got repeated so often they became conventional wisdom. If a site's "X minute read" labels feel consistently optimistic, this is almost certainly why — swapping in 238 WPM produces a noticeably more honest estimate.
SEO Word Count Guidelines
Google has no minimum word count requirement, but comprehensiveness and depth do correlate with ranking performance in practice. General benchmarks: blog posts — 1,200-2,000 words for competitive topics. Pillar pages / ultimate guides — 3,000-5,000+ words. Product pages — 300-500 words. Local service pages — 500-800 words. Quality, depth, and topical coverage matter far more than hitting an arbitrary word count target for its own sake.
Quick Checklist
- Keep Twitter/X posts under 240 characters (free tier) to leave room for engagement and reposts
- Write meta descriptions at 150-155 characters — though expect Google to rewrite them often anyway
- Preview posts on mobile — what's visible "above the fold" varies significantly by device
- For SEO blog posts, aim for comprehensive coverage (1,500+ words) rather than a minimum word count
- Use a realistic 200-240 WPM for reading-time estimates instead of the outdated 300 WPM figure
- Track character counts for Google Ads copy — headlines must be under 30 characters
For informational purposes only. Not financial, tax, or legal advice. Consult a qualified professional before making major decisions.