Inputs
Feet & inches (approx)
3' 3" ⅜
Results
Enter a value then click Convert.
NAIBC / IRC codes
References & Sources
Standards Cited
- SI Brochure (9th edition) — The International System of Units
Defines the metre as the SI base unit of length from which all linear conversions derive View → - NIST Special Publication 811 — Guide for the Use of the International System of Units (SI)
Provides authoritative conversion factors between imperial and metric length units (e.g., 1 inch = 0.0254 m exactly) View → - ASTM E621 — ASTM E621 — Standard Practice for the Use of Metric (SI) Units in Building Design and Construction
Guides metric unit usage and conversions in North American construction measurement
Formulas Used
- Length Unit Conversion:
result = value x (fromFactor / toFactor)
Source: NIST SP 811 — Conversion via metres as the intermediate base unit - Feet and Inches to Metres:
metres = (feet x 0.3048) + (inches x 0.0254)
Source: NIST SP 811
Key Assumptions
- 1 inch = 0.0254 m (exact definition) — NIST Special Publication 811
- 1 foot = 0.3048 m (exact definition) — NIST Special Publication 811
- 1 yard = 0.9144 m (exact definition) — NIST Special Publication 811
- 1 mile = 1609.344 m (exact definition) — NIST Special Publication 811
- 1 nautical mile = 1852 m (exact definition) — International Bureau of Weights and Measures