Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Woodworking
Table Sag Calculator
Estimates the mid-span deflection of a table top or shelf under a given load using beam-bending theory. Use it to verify that your chosen wood thickness won't visibly sag under typical weight.
Fill in the required fields to see your result.
Woodworking
Dado Depth Calculator
Find the ideal dado or groove depth for cabinet and shelf joints based on material thickness and load. Use it when routing dadoes so joints are strong without weakening the cabinet side.
Fill in the required fields to see your result.
Key differences
| Table Sag Calculator | Dado Depth Calculator | |
|---|---|---|
| Category | Woodworking | Woodworking |
| Inputs required | 5 | 3 |
| Result | Expected Sag (inches) | Dado Depth (inches) |
| What it does | Estimates the mid-span deflection of a table top or shelf under a given load using beam-bending theory. Use it to verify that your chosen wood thickness won't visibly sag under typical weight. | Find the ideal dado or groove depth for cabinet and shelf joints based on material thickness and load. Use it when routing dadoes so joints are strong without weakening the cabinet side. |