Labeled vs. Labelled: What's the Difference?
Learn why labeled and labelled are both correct regional spellings, how labeling differs, and how to keep forms consistent.
Labeled, with one l before -ed, is standard American English. Labelled, with two l's, is standard British English and common in several other varieties. Both mean marked, named, or classified; the matching -ing forms are labeling and labelling.
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A dashboard button says labeled while its help article says labelled. The product should select one regional spelling system so users see consistent interface language.
Labeled vs. Labelled at a glance
| Word | Typical role | Meaning | Example |
|---|---|---|---|
| labeled | American past form | marked, named, described, or classified | Each sample was labeled with a unique code. |
| labelled | British past form | the same act of marking, naming, or classifying | Each sample was labelled with a unique code. |
How to use labeled
Use labeled and labeling in US English. American spelling normally does not double the final l of label before these endings because the stress does not fall on the last syllable.
Each sample was labeled with a unique code.
How to use labelled
Use labelled and labelling in British English and many related varieties. The base noun and verb remain label in both systems; only the suffixed forms show the regional doubling pattern.
Each sample was labelled with a unique code.
Rules that make the choice easier
Use labeled and labeling for US style
Keep one l before the endings in American English.
Use labelled and labelling for UK style
Double the final l before -ed and -ing in British English.
Keep interface terminology consistent
Buttons, filters, documentation, and data labels should follow one selected language setting.
Common mistakes to avoid
- Do not mix labeled with labelling in one regional system.
- Do not double the l in the base word label itself.
- Do not change official field names or code identifiers where the spelling is fixed.
Quick practice
1. Which form is standard in US English?
Answer: labeled
2. Which form is standard in UK English?
Answer: labelled
3. What is the US -ing form?
Answer: labeling
Frequently asked questions
Is labeled or labelled correct?
Both are correct; labeled is American and labelled is British.
Is it labeling or labelling?
Labeling is American; labelling is British.
Why does British English double the l?
British spelling commonly doubles a final l before vowel-initial suffixes.
How is the base word spelled?
Label is spelled with one final l in both varieties.