Render calculator
Calculate render kilograms and bags from area, thickness and consumption per mm.
Render quantity estimate
Enter wall area, openings, target thickness and the manufacturer’s consumption per millimetre to estimate kilograms and bags.
Total thickness across all passes. NF DTU 26.1 requires at least 10 mm at every point for a single-coat render.
See the product data sheet (often 1.3 to 1.8 kg/m² per mm).