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Two web & seo tools, side-by-side. See which fits your task.
Web & SEO
Determine if your A/B test results are statistically significant using a chi-squared test. See confidence level and lift.
Open A/B Test CalcWeb & SEO
Paste HTML and count H1-H6 tags. Shows hierarchy and flags SEO issues.
Open Heading CounterYour specific task is determine if your a/b test results are statistically significant using a chi-squared test. Open the page, drop your input, get the result — typically under a second.
Your goal is paste html and count h1-h6 tags. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. A/B Test Calc focuses on determine if your a/b test results are statistically significant using a chi-squared test; Heading Counter focuses on paste html and count h1-h6 tags. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both A/B Test Calc and Heading Counter work without signup. We only ask for an email if you decide to subscribe to a paid plan.