All academic tools

Free checkers tool

Topic Sentence Checker

The topic sentence checker reviews paragraph openings for clear claims, thesis alignment, vague starts, and missing focus signals before you revise.

Check whether body paragraphs open with clear topic sentences that connect to the thesis or assignment focus. Use it as a planning or review aid, then get human help when your prompt, rubric, formatting, or citations need a final pass.

Free tool

Use the tool

Optional, but helps check whether each paragraph connects back to the main point.

Paste body paragraphs separated by blank lines.

This tool is for planning, editing, citation, and study support. Results stay in your browser unless you choose to email/save them or start an order.

Result

Review output

Paste paragraphs to check whether each body paragraph opens with a clear controlling idea.

Need a human review?

Get help with essay help when you need the result cleaned up against your prompt, rubric, and citation style.

FAQ

Questions about this tool

What makes a topic sentence strong?

A strong topic sentence names the paragraph's controlling idea and connects that idea back to the paper's thesis or assignment focus.

Should every paragraph start with a topic sentence?

Most academic body paragraphs should open with a clear focus signal, though some introductions, conclusions, and transitions may work differently.

Can I paste just one paragraph?

Yes. For best results, include the thesis or assignment focus too so the checker can review alignment.

Can Academic Wizard review all topic sentences?

Yes. Essay Help and Editing & Proofreading can check paragraph focus, transitions, and thesis alignment across a full draft.

Keep working

Related academic tools

Browse all tools

checkers

Source Checker

Review a source for author, publisher, evidence, currency, bias, and assignment-fit signals before using it in a paper.

Use tool

checkers

Essay Checker

Run a privacy-safe browser check for grammar, clarity, thesis, sentence length, citation markers, and academic tone risks.

Use tool

checkers

Flow Checker

Check paragraph order, transition signals, topic movement, and one-idea-per-paragraph risks before revising.

Use tool