SlabCalc
Free professional concrete calculators for DIYers and contractors
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slabcalc.co
Domain Rating
26
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PageSpeed
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Estimated· Lighthouse mobile
Founded
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Overview
SlabCalc offers a suite of professional-grade concrete calculators designed for both DIY homeowners and contractors. It provides precise material estimates for various concrete projects, helping users avoid ordering too much or too little material. The platform includes multiple shape calculators with imperial and metric support, adjustable waste factors, bag counts, and cost estimates, all accessible without signup or paywalls. SlabCalc also offers educational guides and a concrete glossary to help users understand the calculations and make informed decisions.
- Who is it for?
- DIY homeowners and professional contractors needing precise concrete calculations
- Problem
- Concrete projects require precise material estimates to avoid costly overordering or delays from underordering. Many users lack accessible, accurate tools to calculate concrete needs for various shapes and project types.
- Solution
- SlabCalc provides easy-to-use calculators for multiple concrete shapes with adjustable parameters and waste factors, along with educational guides and glossaries to help users understand and plan their projects accurately.
- What makes it unique
- No signup or paywalls, fully free to use
- Multiple shape-specific calculators with imperial and metric units
- Includes educational content and detailed cost breakdowns
- Designed by a small team with hands-on concrete and engineering experience
Use cases
- 1Calculating concrete volume for slabs, footings, walls, curbs, and stairs
- 2Estimating bag counts for different concrete bag sizes
- 3Planning concrete project costs and waste factors
- 4Learning concrete basics and terminology
- 5Analyzing contractor quotes for concrete work
- 6DIY concrete project planning
Community
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Screenshots (2)
Features (7)
- 01Multiple Shape Calculators
Calculate concrete volume for slabs, cylinders, curbs, stairs, footings, and more with adjustable dimensions.
- 02Unit System Support
Supports both imperial and metric units for global usability.
- 03Waste Factor Adjustment
Add configurable waste percentages to account for spillage and uneven ground.
- 04Bag Count Estimation
Calculate the number of concrete bags needed for various bag weights.
- 05Cost Estimation
Estimate project costs based on local concrete prices and project size.
- 06Educational Guides
Access comprehensive guides and glossaries to understand concrete work and calculations.
- 07No Signup Required
Use all features freely without creating an account or providing personal data.
Pricing
Free with no signup required
free
Business details
- Business model
- SAAS
- Audience
- B2C
- Platforms
- web
- Pricing model
- free
- Value proposition
- Accurate, free concrete calculators and educational resources for precise project planning
FAQ (5)
01How much concrete do I need for a 10×10 slab?
A 10×10 foot slab at 4 inches thick requires approximately 0.62 cubic yards of concrete, or about 28 bags of 80-lb premix. Add 10% for waste, bringing the practical order to 0.68 cubic yards or 31 bags.
02What is a cubic yard of concrete?
A cubic yard is 27 cubic feet of concrete — a cube measuring 3 feet on each side. It weighs approximately 2 tons (4,000 lb) when wet. At 4 inches thick, one cubic yard covers about 81 square feet.
03How many bags of concrete are in a cubic yard?
One cubic yard of concrete requires approximately 45 bags of 80-lb premix, or 60 bags of 60-lb premix. For comparison, a ready-mix truck delivers concrete in full or partial cubic yards and is more cost-effective for pours over 1 yard.
04How do I calculate concrete in bags?
First calculate cubic yards using the formula: Length (ft) × Width (ft) × Thickness (ft) ÷ 27. Then multiply cubic yards by 45 to get the number of 80-lb bags needed. For example, a 10×10 slab at 4 inches thick = 10 × 10 × 0.333 ÷ 27 = 0.62 yards × 45 = 28 bags.
05How much does a cubic yard of concrete cost?
Ready-mix concrete delivered by truck typically costs $130–$170 per cubic yard, depending on mix strength and location. Bagged concrete (80-lb bags at ~$6 each) costs roughly $270 per equivalent cubic yard — more expensive per unit but practical for small jobs with no minimum order.
Traffic & SEO
Domain Rating
Sep 22 · by Ahrefs
26
- Domain Rating
- 26by Ahrefs
- Global rank
- —
- Lighthouse
- 53 perf · 100 SEOmobile
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Technology (10)
Detected from the site's HTML, headers and bundles
- Metadata
- Open Graph
- Protocol
- HTTP/3
- UI framework
Tailwind CSS
- Web framework
Next.js
Vercel
Cloudflare
Google Analytics
Umami
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