Concrete & masonry
2 calculators in this category.
Browse calculators and guides for Concrete & masonry. Each calculator links to related guides and similar tools to help you plan faster.
Concrete calculator
Estimate cubic yards for a slab.
Concrete bags calculator
Estimate how many bags you need.
Planning tips for Concrete & masonry
Concrete and masonry estimates depend on accurate volume, correct thickness, and the unit you’re ordering (yards, tons, or bags).
What to measure
- Slabs/footings: length × width × thickness; convert inches to feet before multiplying.
- For bag mixes, confirm the yield per bag and whether you’re mixing for a slab, posts, or repairs.
- If the base varies, use an average thickness and measure more than one point.
Useful defaults
- Add a small buffer (5–10%) for uneven forms, spillage, and finishing.
- Round up to whole bags or whole loads; running short during a pour is expensive.
- Confirm reinforcement, base depth, and local requirements separately from the volume estimate.
Common misses
- Forgetting to convert units consistently (inches vs feet, m³ vs liters).
- Ignoring base, compaction, or thickness changes across the area.
- Assuming bag yield is the same across products or mix types.
Related guides
FAQ
Are these calculators accurate?
They are practical estimates based on your inputs and common assumptions. For critical projects, confirm with product specs or a professional.
Why do you recommend adding waste/overage?
Real projects include cuts, mistakes, uneven surfaces, and rounding to boxes/bundles. A small buffer prevents shortages and extra trips.
Can I share my result?
Yes. Most calculators support shareable links that keep your inputs so you can revisit or send the estimate to someone else.