Use unsanded grout for joints 1/8" or narrower (especially on polished natural marble to prevent scratching). Use sanded grout for joints 1/8" or wider for added structural support.
Grout Calculator
Estimate grout weight (lbs) and bag counts based on tile dimensions, thickness, and joint width.
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📊 Calculation Results
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Total Dry Grout Weight Needed
📐 Mathematical Formula & Standard
Grout Weight (lbs) = (Area sq ft × ((Tile L + Tile W) × Joint W × Thickness × 1.6)) ÷ (Tile L × Tile W)
📖 Comprehensive Guide & Pro Estimating Tips
❓ Frequently Asked Questions
When should I use sanded vs unsanded grout? ▼
Use unsanded for joints under 1/8" and delicate marble/glass tile. Use sanded for joints 1/8" or wider on floor tiles.
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