Transition Word Checker

Transition words are words and phrases that connect ideas within and between sentences. They signal the relationship between two thoughts — whether one idea adds to another ("furthermore," "in addition"), contrasts with it ("however," "on the other hand"), follows from it ("therefore," "as a result"), or provides an example ("for example," "such as"). Without transition words, writing tends to feel abrupt and choppy. With appropriate transition words, ideas flow naturally from one to the next, making the text easier to follow.

The widely cited target is 25-35%. This figure comes partly from Yoast SEO, the dominant WordPress readability plugin, which flags content as needing improvement if fewer than 30% of sentences contain a transition word. Below 25%, writing tends to feel disconnected. Above 40%, it can start to feel mechanical or over-structured, as if transition words are being added artificially rather than arising naturally from the logic of the argument. The 25-35% range gives readers enough connective tissue to follow the structure without the writing feeling formulaic.

Yoast uses transition word percentage as one of several readability metrics because readability correlates with engagement — and engagement metrics like time on page and low bounce rate are factors that may indirectly influence rankings. Content that is easier to read tends to hold readers' attention longer, which sends positive signals to search engines. Transition words are one measurable proxy for readability because they indicate that the writer has structured their argument with logical connections rather than just listing points in sequence.

Transition words fall into several categories based on the relationship they signal. Addition words ("furthermore," "in addition," "moreover") add a new point to an existing one. Contrast words ("however," "on the other hand," "nevertheless") signal an opposing or qualifying idea. Cause and effect words ("therefore," "as a result," "consequently") show that one thing follows from another. Sequence words ("firstly," "then," "finally") indicate order. Emphasis words ("above all," "in fact," "notably") stress a point. Illustration words ("for example," "such as") introduce examples. Conclusion words ("in summary," "to conclude") wrap things up. Comparison words ("similarly," "likewise") draw parallels. This tool identifies and categorises all eight types.

Yes. When transition words appear in more than 40-50% of sentences, writing can start to feel stilted or mechanical — as if the writer is ticking boxes rather than writing naturally. Readers can tell when transition words are being inserted artificially to hit a metric rather than because they genuinely connect ideas. The goal is natural, logical flow. If every sentence begins with "furthermore" or "therefore," the transition words lose their meaning through repetition. Variety across categories is as important as the overall percentage — this tool's category breakdown shows which types of transitions you are over- or under-using.