Construction Unit Conversion Calculators
Fast and accurate imperial to metric construction conversions. Convert feet to meters, inches to millimeters, square feet to square meters, and cubic yards with certified precision.
All Unit Conversion Calculators (5 Tools)
Feet to Metres Converter
Convert feet and inches to decimal metres and centimetres with precision building tolerances.
Inches to Millimetres Converter
Convert fractional and decimal inches to millimetres and centimetres for woodworking and tile cuts.
Square Feet to Square Metres Converter
Convert floor and property square footage to square metres and hectares with live cost per unit rate.
Litres to Gallons Converter
Convert litres to US liquid gallons and UK imperial gallons for paint, sealers, and pool chemicals.
Kilograms to Pounds Converter (kg to lbs)
Convert kilograms to pounds and ounces for concrete bags, mortar sand, structural load ratings, and shipping.
International Construction Unit Standards & Tolerances
Statutory conversion factors for translating blueprints, material packages, and architectural takeoffs.
Statutory Linear Conversion Factors
By international treaty standards, 1 inch equals exactly 25.40 millimeters, and 1 foot equals exactly 0.3048 meters. In finished carpentry and precision millwork, avoiding approximate rounding is essential to prevent cumulative dimensional creep over long wall and cabinetry runs.
Area Multipliers (Sq Ft to Sq Metres)
One square meter equals 10.7639 square feet, while one square foot equals 0.092903 square meters. When ordering imported European ceramic tile or Asian porcelain planks quoted in square meters, multiply your gross square footage by 0.0929 to verify package requirements.
Nominal vs Actual Lumber Dimensions
North American lumber uses nominal trade naming that differs from actual surfaced dimensions. A 2x4 stud measures 1.5 inches by 3.5 inches (38mm × 89mm), a 2x6 measures 1.5" × 5.5" (38mm × 140mm), and a 4x4 post measures 3.5" × 3.5" (89mm × 89mm).
Volume Conversions (Cu Yds to Cu Metres)
One cubic yard (27 cubic feet) equals 0.764555 cubic meters. When ordering bulk concrete, sand, gravel, or topsoil across borders, always round up to ensure sufficient batch volume for dynamic compaction under mechanical roller equipment.