Looking to dive into the world of sheet metal bending, but not sure where to start?
Look no further than our comprehensive guide to all things press brake and bending machines. From the different types of bending machines and molds to the crucial parameters you need to know for successful bending calculations, our guide has got you covered.
With our free online sheet metal bending calculator, you can quickly and easily determine the K-factor, Y-factor, bend allowance, bend deduction, arc length, and unfolding flat size for your specific project.
Plus, our handy FAQs section will answer all of your burning questions about sheet metal bending calculations.
Whether you’re a seasoned pro or just starting out, our guide has everything you need to know to achieve the perfect three-dimensional shape for your sheet metal project.
So why wait? Check out our guide today and start bending like a pro!
What Is Sheet Metal Bending?
Sheet metal bending is the process of transforming flat sheet metal into a three-dimensional shape using pressure equipment and specialized molds.
The specific type of bending machine, upper and lower molds, and special molds used will vary depending on the material, thickness, length, and width of the plate, as well as the desired shape and angle.
To achieve the desired results, different bending machines with varying tonnage and pressure, molds with different heights, shapes, and v-openings, as well as molds with unique shapes, are necessary.
See also:
- Press Brake 101: Everything You Need to Know
- Press Brake Dies (Toolings): The Ultimate Guide
- Press Brake Tonnage Calculator (It’s FREE to Use)

Sheet Metal Bending Calculator
Our free online sheet metal bending calculator enables you to rapidly determine the crucial parameters in sheet metal bending calculations, such as the K-factor, Y-factor, bend allowance, bend deduction, arc length, and unfolding flat size.
Related reading:
- How To Calculate Bending Allowance, Bending Deduction And K-Factor?
- K Factor Calculator
- Y Factor Calculator
- Bend Allowance Calculator
- Bend Deduction Calculator

Instructions:
- Input material thickness and inner radius to get the data of K factor, Y factor, neutral layer.
- Then input the bend angle to get the arc length, bend allowance and bend deduction.
- And then input leg length A and B to get the flat size of the sheet.
FAQs
1. What is a sheet metal bending calculator?
A sheet metal bending calculator is a tool that enables you to rapidly determine the crucial parameters in sheet metal bending calculations.
2. What parameters can be calculated using a sheet metal bending calculator?
A sheet metal bending calculator can calculate parameters such as the K-factor, Y-factor, bend allowance, bend deduction, arc length, and unfolding flat size.
3. What is the K-factor in sheet metal bending calculations?
The K-factor is a constant that represents the location of the neutral axis in relation to the thickness of the material being bent.
4. What is the Y-factor in sheet metal bending calculations?
The Y-factor is a constant that represents the amount of springback that occurs during the bending process.
5. What is bend allowance in sheet metal bending calculations?
Bend allowance is the length of the neutral axis in a bend and represents the amount of material needed to accommodate the bend.
6. What is bend deduction in sheet metal bending calculations?
Bend deduction is the amount of material that needs to be removed from the flat blank to achieve the desired size of the bent part.
Shane,
this calculator is great! I am not that versed in Sheet Metal and i can not find any consistent reference for how to calculate the Neutral Axis. Your calculator obviously gets it correct. would you share your method?
Thanks,
-Pete