Verify the inputs
Measure or document each input. If a value is only an estimate, record its source and test a conservative alternative.
Construction/ CALCULATOR
Tile grout and whole bag estimate
Make tile dimensions, joint depth, product consumption factor and spare material explicit.
FROM ESTIMATE TO ACTION
Use the result, not just the number.
Keep the calculation traceable
Save the input link or copied result together with the date, units and assumptions. A number without its inputs cannot be checked later.
Confirm the decision
Compare the estimate with the related guide, current product data and requirements that apply at your location before buying or building.
Inputs to verify
- Tiled area (m²)
- Only this tile size and grout system.
- Tile length (mm)
- Actual face dimension; all tile and joint dimensions use millimetres.
- Tile width (mm)
- Do not use this rectangular-grid model for irregular mosaics.
- Filled joint depth (mm)
- Depth actually filled, not automatically the full tile thickness.
- Grout joint width (mm)
- Check the product’s permitted joint range.
- Product consumption factor (kg/L)
- Use the factor from the manufacturer’s consumption formula. 1.6 is an example, not universal.
- Application loss allowance (%)
- Allowance for mixing and cleaning losses, stated separately.
- Bag or kit mass (kg)
- For multi-part products use complete kit mass, not one component.