Concrete Calculator: Cost & Volume Estimator by SlabCalc
Simple concrete calculator for slabs, footings, walls & sonotubes. Estimate cubic yards, bags needed, and cost.
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About this extension
Free concrete calculator for your browser toolbar. Supports four shape types - slabs, footings, walls, and sonotubes - with imperial and metric units. Calculates volume, weight, bags needed (40–80 lb), and cost estimates. Your inputs are saved automatically between sessions.
Includes a link to the full calculator at slabcalc.co for detailed results.
Includes a link to the full calculator at slabcalc.co for detailed results.
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Permissions and data
Required permissions:
- Access browser tabs
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.0.0
- Size
- 101.57 KB
- Last updated
- 2 months ago (Mar 5, 2026)
- Related Categories
- License
- MIT License
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
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