Text Case for Headings (H1–H6): Complete Guide
Published 2026-03-19 · convertcase.in
Heading case is a critical decision for web content. Different levels (H1 through H6) may call for different conventions. Here's a clear framework.
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1H1 Headings
Most SEO best practices use Title Case for H1: "How to Convert Text Case Online". This matches how most users phrase search queries.
2H2 and H3
Sentence case is increasingly standard for subheadings: "Using our free tool". It reads naturally and requires less cognitive parsing.
3H4 to H6
Always sentence case for lower-level headings. These are structural, not navigational, and should blend into the content flow.
4Consistency Is Key
Pick one approach and document it in your content style guide. Inconsistency is worse than any case choice.
Frequently Asked Questions
Does H1 case affect SEO?
Google is case-insensitive for matching search queries. But Title Case H1s often have higher CTR when shown in SERP featured snippets.