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Lumber Shrinkage Calculator
Dimensional change in wood as it dries.
box Free Online Tool
⚡ Instant Results
📊 Clear Comparison
🔒 100% Free Tool
Shrinkage
Compare Your Options And Get Clear Answers
Dimensional change in wood as it dries.
Lumber Shrinkage Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: Shrinkage = width x moisture change x 0.0025
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
Lumber Quick Guide
Typical values for reference.
| Green width (mm) | Starting moisture (%) | Final moisture (%) | Shrinkage |
|---|---|---|---|
| 200 | 25 | 12 | 6.50 mm shrinkage |
| 300 | 30 | 10 | 15.0 mm shrinkage |
| 100 | 18 | 12 | 1.50 mm shrinkage |
| 150 | 22 | 8 | 5.25 mm shrinkage |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Lumber Shrinkage 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.
Shrinkage = width x moisture change x 0.0025
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.