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Lintel Block Calculator
Lintel blocks needed over an opening.
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Blocks
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Lintel blocks needed over an opening.
Lintel Block Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: Blocks = (opening + 2 bearing) / block length
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Lintel Quick Guide
Typical values for reference.
| Opening width (mm) | Bearing each end (mm) | Block length (mm) | Blocks |
|---|---|---|---|
| 1200 | 150 | 440 | 4.00 blocks |
| 2400 | 200 | 440 | 7.00 blocks |
| 900 | 100 | 440 | 3.00 blocks |
| 1800 | 150 | 215 | 10.0 blocks |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Lintel Block Calculator FAQ
Answers to common questions about this calculator.
It uses the formula shown with your inputs. Real conditions vary, so treat it as a guide.
Blocks = (opening + 2 bearing) / block length
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.
Yes. Replace each input with your own figures and the result updates instantly.