読書時間計算ツール — 無料オンライン
あなたの記事を読むのにかかる時間を推定します
Average Reading Speed Reference
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Frequently Asked Questions
Q. How is reading time calculated?
This tool calculates reading time based on average reading speed: ~500–700 characters per minute for Korean, ~200–250 words per minute for English. Adjust the reading speed setting to match your audience.
Q. What is the ideal reading time for SEO?
Research by Medium shows posts around 7 minutes (~1,400–1,750 English words) get the highest engagement and social shares. For Korean SEO blogs, 5–7 minutes is a good target.
Q. Does reading time appear in search results?
Yes — when you add JSON-LD schema (timeRequired field) and some platforms display it directly. Even without schema, it signals quality content length to Google.
Q. Is a longer reading time always better for SEO?
Not necessarily. Content longer than your topic requires can increase bounce rates. Match length to reader intent and topic depth.
Q. Can I add a reading time badge to my blog?
Yes. Use the generated reading time in your post template (e.g., "⏱ 5 min read"). Many blogging platforms support this natively.
Q. Does reading speed differ by device?
The calculated reading time remains the same, but mobile readers tend to skim rather than read in full. A scannable structure with subheadings helps mobile completion rates.
How to Use
Paste your full blog post into the input field.
Choose the reading speed preset (default: 500 chars/min for Korean, 200 words/min for English) or enter a custom speed.
The estimated reading time and character/word count are calculated instantly.
Adjust your content until the reading time matches your SEO target (e.g., 5–7 minutes for long-form blog posts).
Expert Knowledge: Reading Time Estimator
The relationship between reading time and Google dwell time is a well-established ranking signal. According to Google patent documents, "pogo-sticking" — returning to search results shortly after clicking — is treated as a negative signal. Displaying estimated reading time helps calibrate reader expectations and encourages appropriate dwell time.
The reading speed gap between Korean and English has important SEO implications. Adult Korean reading speed is about 500–700 characters per minute, while English reading speed is 200–250 words per minute (~1,200 characters equivalent). The same "5-minute read" requires 2,500–3,500 Korean characters or 1,000–1,250 English words. Adjust your content length targets accordingly for each language.
Medium's 2023 research found English posts around 7 minutes (~1,400–1,750 words) yield the highest social shares and full-read rates. However, Korean SEO blog readers often prioritize quick information retrieval over full reading, making scannable structures with subheadings and summary boxes more effective for dwell time optimization than simply increasing content length.
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