Modeling vs. Modelling
“Modeling” and “modelling” are regional spellings of the same word family. Cambridge labels “modelling” UK and “modeling” the usual US form.
Use “modeling” in ordinary US English and “modelling” in ordinary UK English.
Key details
Choose the right form
| Meaning / situation | Form / construction | Decision |
|---|---|---|
| ordinary US English | modeling | Use the single-l spelling. |
| ordinary UK English | modelling | Use the double-l spelling. |
Quick tests
Meaning / construction test
Is the document following US English spelling?
If yes: Use “modeling.”
If no: Use “modelling” for UK English, subject to the governing house style.
Caveat: This is a regional spelling difference, not a difference in meaning.
Examples
The team built a modeling framework for the forecast.
The US spelling uses one l before -ing.
The team built a modelling framework for the forecast.
The UK spelling uses double l before -ing.
Keep modeling consistent with the rest of the US-English report.
Consistency is the editorial decision; the meaning does not change.
Further guidance
Core difference
The meaning does not change solely because of the one-l/two-l spelling difference.
Inflection Boundary
Match the spelling to regional or house style and keep related forms consistent where the same convention applies.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Modelling — Cambridge Dictionary (opens in a new tab)Cambridge Dictionary · UK modelling and US usually modeling spelling relationship