URL Slug Generator
A URL slug needs to be lowercase, hyphen-separated, and free of special characters — this turns any title or heading into a clean slug automatically, exactly the format most websites (including this one) use for calculator and blog post URLs.
Inputs
Result
10-best-calculators-for-students
32 characters
How the url slug generator works
The text is lowercased, then any run of characters that isn't a lowercase letter or digit is replaced with a single hyphen.
Leading and trailing hyphens are trimmed from the result.
Worked example: '10 Best Calculators for Students!'
- Lowercased: '10 best calculators for students!'.
- Non-alphanumeric runs (spaces, the exclamation mark) become hyphens: '10-best-calculators-for-students-'.
- Trailing hyphen trimmed: '10-best-calculators-for-students'.
Common mistakes to avoid
Assuming special characters are simply removed rather than replaced with a hyphen
A title like 'Q&A: Best Tips' doesn't collapse the '&' and the space around it into nothing — each non-alphanumeric run becomes exactly one hyphen, which is why consecutive special characters don't create multiple consecutive hyphens in the output.
Expecting accented or non-English characters to convert automatically to their plain equivalents
This slug generator strips characters that aren't plain lowercase letters or digits — accented characters like 'é' or 'ñ' are removed rather than automatically converted to their unaccented equivalents ('e', 'n'), which can leave unexpected gaps in certain titles.
Frequently asked questions
Why do URL slugs typically use hyphens rather than underscores or spaces?
Search engines have historically treated hyphens as word separators more reliably than underscores, and spaces aren't valid in URLs at all without being encoded — hyphens became the practical, SEO-friendly standard as a result.
What happens if my title has no valid characters left after cleaning?
The result would be an empty string, which this tool flags directly as 'empty' rather than silently returning nothing, so it's obvious the input needs adjusting.
Should slugs include stop words like 'a', 'the', 'and'?
This is a matter of site convention rather than a technical requirement — many sites keep them for readability and exact title matching, while others strip them for brevity; this tool preserves whatever words are in the original title.
Can two different titles produce the same slug?
Yes, if they're similar enough after lowercasing and cleaning — real systems generating slugs for actual URLs typically add a uniqueness check or numeric suffix to handle this collision case, which this simple generator doesn't do automatically.
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