Length vs Span

When to use each in English, with meaning, register, and examples.

 LengthSpan
MeaningHow long something is from one end to another.To stretch across or cover an area.
CEFR levelB1C1
Part of speechnounverb
Usage notesUse 'length' when discussing size or duration. It's appropriate in both everyday and academic contexts; avoid using in very casual situations.Use 'span' to describe distance, duration, or extent. More common in technical or descriptive contexts. Avoid in very casual conversation.

Frequently asked questions: Length vs Span

What's the difference between "Length" and "Span"?

"Length" means: How long something is from one end to another. "Span" means: To stretch across or cover an area.

When should I use "Length" and "Span"?

They can all be used in everyday English.

Are "Length" and "Span" the same CEFR level?

"Length" is at B1, "Span" is at C1 on the CEFR scale.

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