Press Brake Tonnage Calculator
Press BrakeTonnageBending Force
Estimate required bending force based on material, thickness, bend length and die opening.
Inmaterial · thickness · bend length · V-opening
Outestimated tonnage (kN / US tons)
Sheet Metal Fabrication Tools
— Free Online Calculators
Practical estimation tools for tonnage calculation, bend allowance, sheet weight and laser power — built for preliminary evaluation and machine selection.
Whether you are quoting a job, planning production, or shortlisting a press brake or laser cutting machine, these free tools give you a reliable starting point in minutes. Results are estimates for reference, not engineering guarantees.
Built by a metalworking machinery manufacturer
Based on standard engineering formulas
For engineers, buyers and factory owners
Bend Allowance Calculator
Press BrakeFlat PatternEngineering
Calculate bend allowance, bend deduction and flat length for accurate flat pattern preparation.
Inthickness · bend angle · inside radius · K-factor · leg lengths
Outbend allowance · flat length · bend deduction (mm)
Sheet Metal Weight Calculator
MaterialWeightLogistics
Estimate sheet weight for carbon steel, stainless steel and aluminum by dimensions.
Inmaterial type · thickness · width · length
Outestimated weight (kg / lbs)
Laser Power Recommendation Tool
Laser CuttingPower SelectionProduction
Find a practical fiber laser power range based on material, thickness and production goals.
Inmaterial type · max thickness · thickness profile · sheet size · volume
Outrecommended power range (kW) · machine direction
How These Tools Work Together in a Fabrication Project
Most sheet metal projects follow a logical sequence. These tools support each stage — from material planning to machine selection.
Estimate Sheet Weight
Start by calculating the weight of your material based on dimensions and density. Helps with purchasing, logistics and machine capacity planning.
Assess Laser Cutting Power
If laser cutting is part of your process, use the power recommendation tool to find a realistic fiber laser power range for your material and thickness.
Calculate Flat Pattern
Before bending, use the bend allowance calculator to determine the flat length, bend deduction and neutral axis arc — essential for accurate flat patterns.
Estimate Bending Force
Use the press brake tonnage calculator to confirm the bending force required. Match the result to a suitable machine capacity.
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Shortlist & Confirm
With estimates in hand, review press brake and laser cutting machine series. Share your drawings or requirements with us for a tailored recommendation.
Why Use These Free Fabrication Tools
These tools are developed by a metalworking machinery manufacturer and designed for practical use — not as engineering substitutes.
Built by machine builders, not software developers
Formulas and parameters reflect real-world fabrication knowledge accumulated through machine design and application support.
For preliminary evaluation, not final engineering
Results are practical estimates for quotation, planning and machine shortlisting. Use them as a starting point, not an engineering substitute.
Saves time in the early stages of a project
Get a reliable number or recommendation in minutes instead of manually consulting tables or contacting suppliers for every initial inquiry.
Can be combined with expert support
If your parts involve complex geometries, non-standard materials or critical tolerances, share your drawings with our team for a detailed review.
From Tool Results to the Right Machine
Each calculator result points to a natural next step. Explore related machines and guides to turn estimates into concrete procurement decisions.
Press Brake Tonnage Calculator
→ Press Brakes — product overview
Review press brake series and tonnage ratings once you know your approximate force requirement.
Bend Allowance Calculator
→ Press Brake Buying Guide
Understand how bend allowance, tooling and machine specs come together in a purchase decision.
Sheet Metal Weight Calculator
→ Laser Cutting Machines / Press Brakes
Use weight estimates to confirm table capacity and backgauge support requirements for your machines.
Laser Power Recommendation Tool
→ Fiber Laser Cutting Machine Buying Guide
Move from a power range to a specific machine model, table type and configuration.
Frequently Asked Questions
Are the results from these tools exact or estimated?
All results are estimates based on standard engineering formulas and simplified parameters. They are intended for preliminary evaluation, quotation preparation and machine shortlisting. For critical applications, final decisions should be confirmed with your engineering team or machine supplier using actual material properties and test pieces.
Can I choose a press brake based on the tonnage result alone?
Tonnage is one of the most important selection factors, but not the only one. After estimating required tonnage, you should also consider bed length (must accommodate your longest bend), stroke, open height, backgauge axes, control system and tooling availability. Our press brake buying guide covers these factors in more detail.
What factors affect bend allowance the most?
Bend allowance is influenced by material type, sheet thickness, inside bend radius, die opening (V-width) and press brake setup. Different materials (carbon steel vs. stainless vs. aluminum) behave differently during bending, and K-factor values often need adjustment based on test bends from your own tooling.
Is the laser power recommendation sufficient for final machine selection?
The power range recommendation gives you a practical starting segment (e.g. 3–6kW or 6–12kW). For final selection, you also need to consider table size, loading method (open type, exchange table, shuttle table), automation level and budget. Our fiber laser buying guide walks through these additional factors step by step.
How do I know which tool to use first?
If you are at the beginning of a project, start with the Sheet Metal Weight Calculator to understand material quantities and logistics. If cutting and bending are both involved, move to the Laser Power Recommendation and Bend Allowance Calculator in parallel, then use the Press Brake Tonnage Calculator once bending parameters are defined. The Workflow section above explains this sequence in more detail.
Can your team verify the results based on my drawings?
Yes. If your parts involve complex geometries, non-standard materials or critical tolerances, you can send drawings or a part list through our contact form. Our application engineers will review the parameters and provide a more specific machine recommendation based on your actual production requirements.
Need Help Turning Calculator Results into a Machine Shortlist?
Send us your material, thickness range, bend length or drawings — and we will recommend a practical machine configuration based on your numbers.
Attaching drawings or a simple part list helps us estimate bending force distribution, tooling needs and machine capacity more accurately.