Calculateur de Joints de Carrelage Gratuit
Calculez la quantité de coulis nécessaire pour votre carrelage. Entrez les dimensions des carreaux et la largeur des joints.
Typical: 1/16" to 1/2"
Standard tile is 3/8 inch
Grout Needed
7.8 lbs
Grout Needed vs Total Area
Formule
## How to Calculate Grout Needed ### Formula **Grout Volume = Area × Joint Width × Tile Thickness × (12/Tile Length + 12/Tile Width) × 12** This calculates the linear inches of grout joints per square foot, multiplied by the cross-section area (joint width × tile thickness). Grout powder weighs approximately 0.058 lbs per cubic inch when mixed. Results depend heavily on joint width — even small changes in joint size significantly affect the amount of grout needed.
Exemple Résolu
120 sq ft of 12×12 inch tile, 1/8 inch grout joint, 3/8 inch thick tile.
- 01Linear inches of joints per sq ft = (12/12 + 12/12) × 12 = 24 inches
- 02Joint cross-section = 0.125 × 0.375 = 0.047 sq in
- 03Grout volume per sq ft = 24 × 0.047 = 1.125 cu in/sq ft
- 04Total grout volume = 120 × 1.125 = 135 cu in
- 05Grout weight = 135 × 0.058 = 7.8 lbs
- 06Bags (25 lb) = 1 bag
Questions Fréquentes
What grout joint width should I use?
For rectified (precision-cut) tile: 1/16" to 1/8". For standard tile: 1/8" to 3/16". For natural stone: 1/8" to 1/4". Wider joints (1/4"+) need sanded grout.
Should I use sanded or unsanded grout?
Use unsanded grout for joints 1/8 inch or narrower. Use sanded grout for joints wider than 1/8 inch. Sanded grout resists cracking in wider joints.
How long does grout take to dry?
Grout should be left to cure for 24-72 hours before regular use. Avoid getting the grout wet for the first 24 hours. Full cure takes about 28 days.
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