Result = starting value × factor. Factors are rounded as in the reference table. mil = 0.001 inch; the gauge conversion uses plastic-film gauge (100 gauge = 1 mil). Coating conversions use a ream area of 278.71 m².
| Property | From | To | Multiply by |
|---|---|---|---|
| Thickness | mil | µm | 25.4 |
| Thickness | µm | mil | 0.0394 |
| Thickness | gauge | µm | 0.254 |
| Oxygen transmission rate (OTR) | cm³/100 in²/24 h | cm³/m²/24 h | 15.50 |
| Oxygen transmission rate (OTR) | cm³/m²/24 h | cm³/100 in²/24 h | 0.0654 |
| Oxygen transmission rate (OTR) | cm³/100 in²/24 h/mil | cm³/m²/24 h/µm | 0.610 |
| Oxygen transmission rate (OTR) | cm³/m²/24 h/µm | cm³/100 in²/24 h/mil | 1.64 |
| Water vapour transmission rate (WVTR) | g/100 in²/24 h | g/m²/24 h | 15.50 |
| Water vapour transmission rate (WVTR) | g/m²/24 h | g/100 in²/24 h | 0.0654 |
| Water vapour transmission rate (WVTR) | g/100 in²/24 h/mil | g/m²/24 h/µm | 0.610 |
| Water vapour transmission rate (WVTR) | g/m²/24 h/µm | g/100 in²/24 h/mil | 1.64 |
| Yield | in²/lb | m²/kg | 0.00142 |
| Yield | m²/kg | in²/lb | 703.074 |
| Tensile strength and modulus | lbf/in² | N/mm² | 0.0069 |
| Tensile strength and modulus | N/mm² | lbf/in² | 144.92 |
| Tear strength | g/mil | g/µm | 0.0394 |
| Tear strength | g/µm | g/mil | 25.38 |
| Pressure | psi | kgf/cm² | 0.0703 |
| Pressure | kgf/cm² | psi | 14.22 |
| Coating weight | lb/ream | g/m² | 1.63 |
| Coating weight | g/m² | lb/ream | 0.613 |
°C / °F
°F = (°C × 1.8) + 32
°C = (°F − 32) / 1.8
°C = (°F − 32) / 1.8
The “/µm” and “/mil” notation in barrier units follows the reference table. Do not confuse thickness-normalized data with direct transmission rates.
Usage notes
These values are technical references. Film grade, orientation, thickness, coating and test conditions affect the result. Use the current product technical data sheet for final selection.