Concrete Lintel Volume Calculator
Estimate concrete volume, full bags, form-contact area, placed weight and cost for identical rectangular lintels.
Default project preview
0.43 yd³
Concrete bags
20
Base concrete
0.4 yd³
Total lintel length
24 ft
Three-face form area
48 ft²
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Input and output guide
What each value means
The labels and units below are part of this calculator’s visible methodology. Replace every default with measurements or product data from the actual project.
Lintel length
Enter this project assumption in ft. The current imperial default is 6 ft.
Lintel width
Enter this project assumption in in. The current imperial default is 8 in.
Lintel depth
Enter this project assumption in in. The current imperial default is 8 in.
Identical lintels
Enter this project assumption in a unitless value. The current imperial default is 4. Minimum: 1.
Extra allowance
Enter this project assumption in %. The current imperial default is 10 %. Minimum: 0. Maximum: 50.
Concrete yield per bag
Enter this project assumption in ft³. The current imperial default is 0.6 ft³.
Ready-mix price
Enter this project assumption in per yd³. The current imperial default is 165 per yd³. Minimum: 0.
Price per bag
Enter this project assumption in a unitless value. The current imperial default is 7. Minimum: 0.
How to read the outputs
Concrete bags
rounded full bags. Default preview: 20.
Base concrete
before allowance. Default preview: 0.4 yd³.
Total lintel length
all lintels. Default preview: 24 ft.
Three-face form area
bottom and sides. Default preview: 48 ft².
Placed weight
planning density. Default preview: 1,758 lb.
Cost comparison
ready-mix / bags. Default preview: $71.70 / $140.00.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Concrete volume = lintel length × width × depth × quantity. The allowance is added before converting to ready-mix units or rounding bags up.
Reviewed project guidance
How to use this estimate in a real project
Last reviewed: July 30, 2026
Estimate concrete volume for a lintel from length, width, depth and quantity. This is a material takeoff only; lintel span, reinforcement, bearing and temporary support require approved structural design.
Calculation steps
- 1Use the designed lintel dimensions including required bearing length.
- 2Calculate one lintel volume and multiply by quantity.
- 3Add separate volumes for end blocks or integrated bond beams if present.
- 4Apply placement allowance and round to supplier or batch increments.
Worked numerical example
Four lintels each 6 ft long, 8 in wide and 12 in deep contain 16 ft³, or 0.59 yd³. With 10% placement allowance, plan about 0.65 yd³.
Purchasing and rounding
Small lintels may be mixed by bag or batch, while multiple lintels may justify ready-mix. Coordinate reinforcement, forms and placement access before selecting the supply method.
Interpret the result
The quantity result does not indicate whether the lintel is adequate for the opening or supported loads. More concrete can increase self-weight without solving reinforcement or bearing deficiencies.
Page-specific assumptions
- Dimensions come from approved drawings.
- Cross-section is uniform unless shapes are separated.
- Reinforcement displacement is not deducted.
Common mistakes
- Using opening width instead of total lintel length including bearing.
- Sizing lintels from concrete volume alone.
- Omitting integrated bond-beam sections.
- Ordering before forms and reinforcement are verified.
Primary and technical references
BuildMeter provides planning estimates, not engineering, architectural, electrical, mechanical, plumbing, permit or code approval. Review the methodology and verify final decisions with product documentation and qualified professionals.
FAQ
Concrete Lintel Volume Calculator questions
Does this size the lintel?+
No. Lintel dimensions and reinforcement depend on opening span, masonry, loads and bearing conditions.
Is the lintel length the clear opening?+
Use the full concrete length, including the specified bearing beyond each side of the opening.
Does the form area include the top?+
No. The estimate reports the bottom and two side faces for a typical open-top pour.