Concrete & Gravel Calc

Concrete & Gravel Calc is the fast, easy-to-use construction calculator built for contractors, builders, and DIYers. Get accurate material estimates in seconds — no guesswork, no spreadsheets.

CONCRETE CALCULATORS
• Slab — Calculate cubic yards for any rectangular slab
• Footing — Estimate material for continuous footings
• Column / Sonotube — Round column calculations
• Wall — Concrete wall volume estimates
• Circular Pad — Round slab calculations

GRAVEL CALCULATORS
• Rectangular Area — Gravel for driveways, patios, and paths
• Circular Area — Round gravel bed estimates
• Trench — Gravel for drainage trenches and french drains

KEY FEATURES
• Toggle between Imperial and Metric units
• Adjustable waste factor (0–25%) for real-world conditions
• Bag calculator — see how many 40, 60, or 80 lb bags you need
• Gravel weight estimates with multiple density presets (crusher run, pea gravel, river rock, and more)
• Save and label your calculations for easy reference
• Cost estimates with custom price per yard, ton, or bag
• Clean, modern interface designed for job site use
• Works offline — no internet required

PRO UPGRADE ($2.99 one-time)
• Remove all ads
• Save unlimited calculations
• Share results via text, email, or any app

Free users can save up to 20 calculations and copy results to clipboard.

Estimates are for planning purposes. Always verify quantities with your material supplier. Actual amounts may vary based on site conditions and material density.