How to Calculate Length of Bent Tube

Bent Tube Length Formula:

\[ L = L1 + L2 + \frac{θ \times π \times R}{180} \]

Straight Length 1 (L1):

inches

Straight Length 2 (L2):

inches

Bend Angle (θ):

degrees

Bend Radius (R):

inches

Total Bent Tube Length (in):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is a Bent Tube Length Calculator?

Definition: This calculator determines the total length of a tube that includes straight sections and a bent section.

Purpose: It helps engineers, fabricators, and DIYers calculate the total length of tubing needed for projects involving bent sections.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ L = L1 + L2 + \frac{θ \times π \times R}{180} \]

Where:

\( L \) — Total length (inches)
\( L1, L2 \) — Straight lengths (inches)
\( θ \) — Bend angle (degrees)
\( R \) — Bend radius (inches)

Explanation: The formula sums the straight sections and adds the arc length of the bent section.

3. Importance of Accurate Length Calculation

Details: Proper length calculation ensures correct material ordering, minimizes waste, and helps with precise fabrication.

4. Using the Calculator

Tips: Enter the straight lengths (L1, L2), bend angle (0-180°), and bend radius. All values must be ≥ 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the maximum bend angle allowed?
A: The calculator accepts angles up to 180° (a semicircle), though practical bending may have lower limits.

Q2: How do I measure bend radius?
A: Measure from the center of curvature to the centerline of the tube.

Q3: Does this work for multiple bends?
A: No, this calculates a single bend. For multiple bends, calculate each section separately and sum them.

Q4: What about material stretch during bending?
A: This gives theoretical length. Actual length may vary slightly due to material properties and bending process.

Q5: Can I use this for metric measurements?
A: Yes, as long as all measurements use the same units (e.g., all in mm).