Synthetic Enamel Calculator
Calculate litres of enamel for wood and metal.
The Synthetic Enamel Calculator is a free tool designed for construction professionals and enthusiasts. Calculate litres of enamel for wood and metal. Instantly get the required materials broken down by purchase units, with an option to add a wastage allowance so you never run short on site.
Inputs
Result
Result
How to Use This Calculator
- Measure the surface to paint in m² (length × height of each wall/ceiling).
- Subtract door and window areas (approx. 1.8 m² per door, 1.2 m² per window).
- Enter the number of coats: 1 coat for same-colour refresh, 2–3 for colour change.
- Check the paint spread rate on the product data sheet (typical: 10–14 m²/L).
- Click 'Calculate' to see net litres, total litres with wastage and cans to buy.
Frequently Asked Questions
For walls in good condition with the same colour: 1 coat. For colour change or highly absorbent walls: 2 coats. For dark over light or vice versa: 2–3 coats + primer.
Interior emulsion typically covers 12–14 m²/L per coat. Exterior or textured paint covers less, around 8–10 m²/L.
Measure length × width of the ceiling in metres. Apply the paint coverage (10–14 m²/L) and number of coats. For textured ceilings, use 20 % more paint.