Concrete Curb and Gutter Calculator: Estimate Volume, Cost & Pre-Mix Bags
The Concrete Curb and Gutter Calculator simplifies estimating concrete volume, pre-mix bags (80lb, 60lb, 40lb), and total costs for curbs and gutters.
This calculator supports multiple input units, including feet (ft), inches (in), yards (yd), centimeters (cm), and meters (m), making it adaptable for users worldwide.

Why Estimate Concrete for Curbs and Gutters? Avoid Waste & Save Costs
Accurate concrete estimation is essential to avoid material shortages or overspending. This calculator allows you to:
- Determine concrete volume in cubic yards.
- Calculate the number of pre-mix bags required (80lb, 60lb, or 40lb).
- Estimate the total cost of the project, factoring in wastage.
- Work with a variety of units for convenience and precision.
Step-by-Step Guide: Calculate Concrete Volume, Bags & Costs
- Select Units: Choose the units for your inputs (ft, in, yd, cm, or m).
- Input Dimensions:
- Flag Thickness: Thickness of the flag section.
- Gutter Width: Width of the gutter section.
- Curb Height: Height of the curb.
- Length: Total length of the curb and gutter.
- Additional Wastage (%): Specify a percentage to account for material wastage.
- Price Per Cubic Yard: Enter the price of concrete per cubic yard.
The curb and gutter calculator provides a detailed breakdown of the total concrete volume required in cubic yards, ensuring precise material estimation for your project. It also calculates the number of pre-mix bags needed, offering options for 80lb, 60lb, or 40lb bags based on your preference.
Additionally, the tool estimates the total project cost by factoring in the price per cubic yard, making it easy to budget effectively and avoid unexpected expenses.
Example Calculation
Scenario:
- Units: Inches
- Flag Thickness: 6 in
- Gutter Width: 18 in
- Curb Height: 12 in
- Length: 600 in
- Wastage: 10%
- Price per Cubic Yard: $125
Step-by-Step Calculation:
- Convert all dimensions to feet:
- Flag Thickness:
- Gutter Width:
- Curb Height:
- Length:
- Calculate the volume (in cubic feet):
Substituting the values:
- Convert cubic feet to cubic yards:
- Add 10% wastage:
- Calculate pre-mix bags:
- 80lb Bags:
- 60lb Bags:
- 40lb Bags:
- Determine total cost:
The calculator handles input units in feet, inches, yards, centimeters, and meters. It automatically converts all dimensions to feet for calculations.
Conversion Reference:
- 1 ft = 12 in = 0.333 yd = 30.48 cm = 0.3048 m
- 1 yd = 3 ft = 36 in = 91.44 cm = 0.9144 m
After calculating concrete volume, use our Concrete Weight Calculator to determine how much your materials will weigh during transport.
FAQs About Curb and Gutter Concrete Calculations
How do I calculate concrete for curbs with different units?
Ensure all measurements are in the same unit before converting them to feet for consistent calculations.
What if I only know the dimensions in centimeters or meters?
The calculator will convert these units to feet automatically, so no manual conversion is needed.
How many cubic yards are required for a standard curb?
This depends on the specific dimensions of the curb and gutter. Use the calculator for precise estimates.