Concrete Calculator Browser Extension

Quick access to concrete volume and cost calculations right from your browser toolbar. Available for Chrome, Firefox, and Opera. No account needed — just click and calculate.

Slab calculator with live results
Slab calculator with live results
Cost breakdown view
Cost breakdown
Metric and sonotube support
Metric & sonotube support

Features

  • 4 shape types: slab, footing, wall, sonotube
  • Live volume, weight, and bag calculations as you type
  • Imperial and metric unit toggle
  • Bagged and ready-mix cost estimates
  • Inputs persist between sessions — pick up where you left off

How It Works

  1. Install the extension from the Chrome Web Store, Firefox Add-ons, or Opera Add-ons.
  2. Click the SlabCalc icon in your toolbar and pick a shape.
  3. Enter dimensions — results update instantly.

Support