Estimate the grout needed for standard rectangular tile joints, then round to full bags to plan a materials budget.
The estimate uses a published consumption-style formula: (tile length + tile width) ÷ (length × width) × filled depth × joint width × density factor = kg per m². All tile dimensions and joint measurements are in millimeters.
Learn about the underlying method: MAPEI grout consumption chart ↗
Note: This tool estimates quantities, not structural requirements, installation safety, code compliance, or product suitability.
This is a product-specific consumption constant. The default 1.6 is illustrative and appears in MAPEI consumption data for certain grouts, but other products use different factors.
Not necessarily. Enter the actual depth the grout will fill. Different installation systems can change effective joint depth.
Joint shape, spacers, mosaic patterns, product composition and installation losses affect grout usage. Check your manufacturer’s chart.