Use 1 inch = exactly 25.4 mm. Multiply inches by 25.4 for millimetres; divide millimetres by 25.4 for inches.
WORKING CONVERTER
Metric and imperial pallet dimensions
Maximum input: 10,000,000 mm per side.
CONVERTED DIMENSIONS47.24 × 31.50 in
Unrounded canonical values are retained for calculations.
1 inch = exactly 25.4 millimetres. Each side is converted independently; rounding is for display only.
Key dimensions and facts
- 1 inch
- 25.4 mm exactly
- 1 foot
- 304.8 mm exactly
- 1 centimetre
- 10 mm
- 1 ft²
- 0.09290304 m²
Market, terminology and context
A rectangular footprint has two lengths. Convert each side independently before area or layout calculations.
Method and calculation
Area units require the squared conversion factor; do not apply a linear factor to a square-unit result.
Worked example
48 × 40 in becomes exactly 1219.2 × 1016 mm. Preserve those values for calculations even if the display uses nominal rounded millimetres.
What remains variable
Conversion precision does not establish manufacturing tolerance or actual measured size.
Primary sources and provenance
- NIST — SI length ↗Checked 26 August 2026