Mortar & Grout Calculator — m, bags, cost
How to use this calculator
Choose a mode: mortar for brick walls, mortar for block walls, grout for block fill, or custom volume entry. Enter wall dimensions in meters or centimeters and the calculator estimates bags needed.
Mortar Classes — M20 (20 MPa, structural), M10 (10 MPa, general), M5 (5 MPa, interior), M2.5 (2.5 MPa, partition).
Bag Sizes — 25 kg and 40 kg pre-mixed mortar.
Currency — Select EUR, PLN, CZK, SEK, etc.
Saved Calculations
| Time | Mode | Area m² | Vol L | Bags | Weight kg | Cost |
|---|
How to Calculate Mortar and Grout (Metric)
This calculator estimates mortar and grout quantities in metric units. Choose from four modes: mortar for brick walls (NF, DF, 2DF formats), mortar for block walls, grout for block cell fill, or direct volume. Mortar classes per EN 998-2: M20 (structural), M10 (general), M5 (above grade), M2.5 (interior).
Coverage
NF brick (240×115×71 mm) with 12 mm joints requires approximately 30–40 L of mortar per m². Block 200×200×400 mm uses approximately 8–10 L per m². Grout fill varies by block width and fill percentage.
Bag Yield
40 kg bag ≈ 20 liters mixed. 25 kg bag ≈ 12 liters mixed. Actual yield depends on manufacturer — check bag labels.
