Concrete Curb Calculator
Enter curb length in feet plus height and width in inches to get the concrete volume in cubic yards and cubic feet. The inch dimensions are converted to feet before the volume is worked out.
What this calculator does
The Concrete Curb Calculator estimates your result instantly from the values you enter, using standard construction & home formulas. Enter curb length in feet plus height and width in inches to get the concrete volume in cubic yards and cubic feet. The inch dimensions are converted to feet before the volume is worked out. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate rather than a certified or official figure.
Result
About Concrete Curb Calculator
A concrete curb is essentially a long rectangular prism. This calculator takes the curb length in feet and the cross-section height and width in inches, converts the inch values to feet, and multiplies the three together for the volume in cubic feet.
That cubic-foot figure is divided by 27 to give cubic yards, the unit ready-mix concrete is usually ordered in.
Formula & Mathematical Calculation
Concrete Needed (yd³) = f(Curb Length (ft), Height (in), Width (in))
Calculated according to standard construction formulas implemented in the calculator core.
Calculation Example
For a curb 50 ft long, 12 in high, and 6 in wide:
- Cubic feet = 50 × (12 ÷ 12) × (6 ÷ 12) = 50 × 1 × 0.5 = 25 ft³
- Cubic yards = 25 ÷ 27 = 0.93 yd³
The tool shows Concrete Needed 0.93 yd³ and Cubic Feet 25.
Key Benefits
- Converts inch height and width to feet automatically before finding volume
- Reports both cubic feet and cubic yards, matching how concrete is ordered
- Reduces a three-dimension curb to a single ready-to-order figure
- Free, runs in the browser, with no sign-up
How to Use this Calculator
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Enter the curb length
Type the total curb length in feet into the Curb Length (ft) field, such as 50. -
Enter the height
Type the curb height in inches into the Height (in) field, such as 12. -
Enter the width
Type the curb width in inches into the Width (in) field, such as 6. -
Calculate
Press Calculate to see the concrete volume in cubic yards and cubic feet.
Assumptions & Limitations
What the calculation assumes
- Every value you enter is treated as an exact, known amount.
- Any rate or interval you enter is assumed to hold for the whole period unless the form asks for it separately.
- Results use standard published formulas and account only for the values entered above.
- Rounding is applied for display; the underlying calculation uses your full precision.
- Results are returned in the same units you enter, unless the tool states the output unit.
What it does not cover
- Concrete Curb Calculator produces a calculated result for reference and learning, not a certified or official measurement.
- Real-world outcomes differ when tolerances, rounding rules or local standards apply.
- Definitions and standards vary by region and change over time; verify the convention that applies to your case.
- Figures are only as accurate as the inputs you supply — check them before acting on the result.
- For work where the result carries real consequences, confirm it against an authoritative source.
Frequently Asked Questions
Free to use, no account needed. Calculations run in your browser, so nothing you type is sent to a server. Results are estimates — how we build and check our calculators.