Concrete
Concrete Curb Calculator
Calculate the concrete needed for curbs, edging, and mow strips. Enter your total curb length and cross-section.
Inputs
Live estimate
Material needed
6.17 cu yd
- Area
- 500 sq ft
- Cubic feet
- 166.67
- Cubic yards
- 6.17
- Estimated tons
- 12.35 tons
- Estimated truckloads
- 0.62
- 80 lb bags
- 278
You will likely need
- •6.17 cu yd — material needed
- •Schedule 1 truck load
- •Approximate delivered weight: 12.35 tons
- •278 bags
Diagram
Live estimate
- Mathematical quantity
- 6.2 cu yd
- Placement contingency
- +5% → 6.5 cu yd
- Field conditions
- Not applied
- Adjusted requirement
- 6.5 cu yd
- Ordering rule
- Round up to nearest 0.5 cu yd
- Suggested order
- 6.5 cu yd
Small over-excavation, form deflection, and pump / handling loss during placement.
What you actually need in the field, before rounding to a supplier-friendly ordering unit.
Estimator confidence
HighSmall over-excavation, form deflection, and pump / handling loss during placement.
Improve confidence: Increase for pumped placements or complex forms.
Why this behavior applies: Concrete is a rigid, formed material. The only real adjustment is placement contingency — form deflection, small over-excavation, and pump / bucket loss.
- Form radius — Curved forms deflect more than straight runs.
- Order in half-yard increments to match ready-mix minimums.
- Wet-cure for 3+ days to reach full strength.
- Add expansion joints every 10 feet on long straight runs.
- Ordering the geometric volume without end and spillage allowance.
- Skipping expansion joints and getting random cracks.
- Pulling forms too early and getting sagged edges.
Smart tips
- Ordering 5–10% extra is standard on irregular layouts. Running short costs more than the excess.
How it's calculated
Area is derived from your shape inputs and converted to sq ft.
Depth is converted to feet; cubic feet = area × depth.
Cubic yards = cubic feet ÷ 27, then × (1 + waste %) × (1 + compaction %).
Estimated tons = cubic yards (with waste) × 2.
Truckloads = cubic yards (with waste) ÷ truck capacity.
Total cost = cubic yards (with waste) × price per cubic yard + delivery.
Material assumptions
- Curbs are treated as a long footing: length × width × height.
- Typical residential curb: 6 in wide × 6 in tall.
- Order 10% extra for spillage and screeding losses.
Frequently asked questions
Related calculators
Concrete quantities are estimates. Confirm mix design and reinforcement with your engineer or municipal specs.