Square tube cutting calculator
Square tube frames often need multiple identical legs, crossmembers and braces. Grouping those lengths into a cutting plan can help a fabricator see which pieces belong on which stock bars.
Browser-based · No sign-up · Straight 1D cuts only
Finished parts + cutting allowances + leftover = stock length
What this calculation covers
The browser calculator handles straight length allocation. First group stock by identical tube cross-section, wall thickness and material; then enter the final lengths needed for that group.
45-degree frame joints change required blank lengths and cutting geometry. The current web planner does not model those angles.
A real-number cut list example
Three 1,750 mm straight square-tube pieces total 5,250 mm. Assuming three 3 mm cuts, the model estimates 9 mm of blade loss and 741 mm unused on a 6,000 mm stock length.
Length balance: 5250 mm finished + 9 mm kerf + 741 mm leftover = 6000 mm stock.
This illustrative example assumes zero head trim and tail reserve. Always enter your actual machine allowances.
How to prepare a cutting plan
Split by profile size
Keep 25×25 mm and 40×40 mm tubes in separate cutting runs.
Specify saw loss
Set a reasonable kerf and trim allowance for your machine.
Cross-check the assembly
Use the exported plan with drawings; do not assume it includes miters for frame corners.
Enter stock, parts and saw kerf in the free 1D MetalCut calculator.
Common questions
Can I use it for rectangular tube?
Yes, for straight length allocation. Run a separate plan for each distinct rectangular section.
Does it produce an angled cutting diagram?
No. Its visual map represents one-dimensional cut lengths only.