Length unit converter

Calculator result and formula

Converted value in m: 3.048 m

Formula: Source value × source-unit-to-feet factor ÷ target-unit-to-feet factor

Formula ID: UTIL-LENGTH-CONVERT-001 · Version 1.0.0 · Published · Last reviewed Aug 26, 2026.

Inputs

• Value: Length value to convert Default: 10.
• Source unit: Unit of the entered value Default: 1.
• Target unit: Unit for the converted result Default: 2.

How this calculator works

This utility converts a stated length between feet, metres, inches and centimetres while also displaying canonical feet and metres equivalents for cross-checking.

1. Enter the value in its known source unit.
2. Choose the source and target units.
3. Use the side-by-side canonical values to cross-check drawings, supplier data and calculator inputs.

Worked example: Example: 10 ft converts to 3.048 m, 120 in and 304.8 cm. The source and target units remain visible so a result never loses its measurement basis.

Assumptions and limitations

• This tool converts linear length only.
• All conversions pass through feet as the canonical internal unit.
• Use the unit stated by the drawing, product label or survey source; do not mix length with area or volume units.

Common mistakes to avoid

• Confirm the measurement basis and units before using the result.
• Keep waste or allowance visible and adjust it for the actual job conditions.
• Confirm supplier packaging, delivery increments, specifications, and final site requirements before ordering.

Calculator disclaimer

This planning calculator does not determine structural design, code compliance, installation requirements, or guaranteed pricing. Confirm final requirements with the appropriate responsible professional, authority, manufacturer, and supplier.

Formula review and sources

Internal QA complete · independent external review pending · Formula assumptions documented.

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