Length converter
Convert metric, imperial and nautical lengths using named unit definitions.
Your inputs
The editable example is illustrative. Enter your own dimensions, operating data, prices, and fees. Results update as you edit.
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How it works
- Converted value = × f₁ ÷ f₂; SI: m
- Worked example: 1 in = 0.0254 m; 1 nmi = 1,852 m
- Supported input limits: : -1,000,000,000,000 ≤ x ≤ 1,000,000,000,000
Input and formula key
Your result
Complete the inputs to see your result.
Assumptions and limitations
Lengths use the international foot of exactly 0.3048 m and the international nautical mile of 1,852 m. Negative lengths can represent signed displacements. This converts measurements only; it does not measure a route or account for map projections.
Sources
- NIST — conversion factor conventions Sources reviewed: 2026-10-06
- NIST — conversion factor table B.8 Sources reviewed: 2026-10-06
