Design – Rolled Radius Calculator

Rolled Radius Calculator

You can use the calculator below to calculate the radius of an already existing shape (like a car roof or bumper). Measuring the radius of an existing large shape is tough without some help.

Bump Bend Radius Calculator

Calculate Large Radius Objects (like rolled cage tops, rolled bumper bars, etc). Use the section below if you know the length and height of the part you want to make, but not the bend angle.

Width of Tube (chord length)

Height or Depth Measurement (h)

3.5", 4.5", and 6.0" Are Common

Radius you are trying to achieve:

Use the section below if you know the rolled radius and the bend angle, but you do not know your straight length (you need straight length for the calculator below this one).A description of the section goes here.

Large Radius to Achieve

Angle being bent (for whole part)

Straight Length (result)

This is the result. This is the straight length of your part. If you were making a curved roof, this is the "tape measure length" of the roof, as if you measured from end to end.

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