Grout Volume Calculation Formula

$$R = \frac{l \times w}{(l + g) \times (w + g)}$$

$$\text{grout area} = A_{\text{surface}} - A_{\text{surface}} \times R$$

$$\text{grout volume} = \text{grout area} \times \text{gap depth}$$

Where:

• $l$ = Length of the tiles to be installed
• $w$ = Width of the tiles to be installed
• $g$ = Gap width or the tile spacing that needs grouting
• $A_{\text{surface}}$ = Total area of the tiling project
• $\text{grout area}$ = Total area that needs grouting
• $\text{gap depth}$ = Depth of the gap