Gloss Paint Calculator — Doors, Frames & Skirting
Calculate gloss, satinwood, or eggshell paint for doors, frames, skirting boards, and window frames. Includes undercoat quantities.
Standard door = 1.5 m² each
Total linear metres of all frames
Total linear metres of skirting
Total window frame area
2 coats recommended
How We Calculate This
This calculator adds up the areas of all woodwork items — doors, frames, skirting, and window frames — then calculates the gloss and undercoat paint required.
The formula
Door area = Number of doors × 1.5 m²
Frame area = Frame metres × 0.5 m²/m
Skirting area = Skirting metres × Height (m)
Gloss litres = (Total area × Coats ÷ 16 m²/L) × Wastage
For example, 4 doors (6.0 m²) + 8m frames (4 m²) + 20m skirting (3 m²) = 13.0 m². Gloss: 13.0 × 2 ÷ 16 = 1.63 L + 10% waste = 1.79 L → 1 × 2.5L tin. Undercoat: 13.0 ÷ 14 = 0.93 L + 10% = 1.02 L → 1 × 2.5L tin.
Frequently Asked Questions
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Last updated: March 2026
All calculations are estimates. Verify with your supplier.