How much rebar for a 20 ft × 20 ft slab?
A 20 ft × 20 ft slab rebar project is pre-filled below. Adjust any value to match your exact job.
Your project
Standard size shown by default. Change any value — the answer recomputes instantly.
You need
924linear ft
Exact need: 840 linear ft · plus 10% waste allowance
Material cost
$600.6–$1,478.4
Installed (US avg)
$771–$1,708
Shopping list
| ITEM | QTY | PRICE RANGE |
|---|---|---|
| linear ft | 924 | $600.6–$1,478.4 |
| Estimated material total | $600.6–$1,478.4 |
Companion materials
- Grid: 21 + 21 bars at 12 in on-center