20+ years of foundation field experience
Calculate concrete, rebar, and foundation materials. Save projects, organize measurements, and keep job quantities in one place.
Slabs, footings, walls, grade beams, pier pads, curbs, steps, cylinders, and rebar — all in one tool.
Project: Maple St. Foundation
6 areasPick your pour
One dedicated calculator per job type. No cramming everything into a single box — each one shows the math and the field tips that matter for that pour.
Cubic yards, bags, and cost for any concrete pour.
OpenSlabs, garage floors, and pads by thickness.
OpenContinuous and spread footings, frost depth aware.
OpenFoundation walls and stem walls by linear foot.
OpenBar counts, spacing, and total linear footage.
OpenWhy contractors use it
This isn't a homeowner toy. It's the calculator a foreman keeps open on the truck dash.
Save multiple areas inside one project — footings, walls, slabs, pads — instead of recalculating each pour from scratch.
Every default and field tip comes from 20+ years actually pouring foundations, not from a generic calculator template.
Mobile-first and high contrast so you can pull it up on your phone in the dirt, not just at a desk.
No week-long learning curve. You get usable quantities in the time it takes to read a tape measure.
Keep job quantities in one place so you can pull last month's numbers when you bid a similar build.
Cubic yards, bag equivalents, waste factor, and cost — the numbers you actually put on a bid.
Real foundation job
Here's how a typical residential foundation breaks down inside a single saved project. You add each area as you take it off the plans.
| Area | Dimensions | Concrete |
|---|---|---|
| Basement Footings | 110 lf × 24" wide × 12" deep | 8.4 yd³ |
| Foundation Walls | 110 lf × 8" thick × 8′ tall | 14.2 yd³ |
| Garage Slab | 24′ × 24′ × 4" | 6.1 yd³ |
| Porch Slab | 8′ × 10′ × 4" | 1.3 yd³ |
| Project total + 10% waste | 33.0 yd³ | |
Elan's field note
How this differs
Most concrete calculators do one box of math and forget it the second you close the tab. This is built around the whole job.
Single-use, homeowner focused
Whole-job, contractor focused
How this differs
Those tools are powerful and genuinely good at what they do. They're just built for a different job than a small concrete contractor's.
Bluebeam, PlanSwift, and Stack CT are full estimating suites built for big GCs running every trade. If you pour concrete, most of that you will never touch.
Heavy takeoff software runs hundreds to thousands per seat per year. This is priced for an owner-operator or a small concrete crew.
You should not need a training course to figure out yardage. Add an area, enter dimensions, get quantities. Done.
Every input, default, and tip is tuned for foundation and flatwork — the work you actually bid.
Common Questions
Straight answers to the questions contractors ask most before their next pour.
Multiply length × width × depth (all in feet) and divide by 27 to get cubic yards. For example, a 20 ft × 24 ft slab at 4 inches (0.333 ft) thick is 20 × 24 × 0.333 ÷ 27 = 5.9 cubic yards. Always add 5–10% for waste, spillage, and uneven subgrade. The calculator handles all of this automatically, including bag counts and ready-mix yardage.
Run your next pour through the calculator, save the job, and keep every area in one place. Free to start.
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