Every unit the glass trade actually uses, converted live in both directions: thickness in millimetres, decimal inches and the nearest fraction; area, weight and weight-per-area; surface compression in MPa and psi; U-value, R-value, thermal conductivity, and temperature. Type in any field and the rest follow.
The one glaziers reach for most. Enter millimetres or inches; you get both, plus the nearest standard fraction and the nominal call-out.
Pick a category, type a value in any box, and every other unit updates instantly.
The industry pairings from ASTM C1036. These are nominal names, not exact conversions (6 mm and 1/4″ are called equivalent even though 6 mm is 0.236″). Tap a row to load it above.
| Nominal inch | Nominal mm | Exact of the inch | Exact of the mm |
|---|