Calculate how quickly a round part narrows along its axis.
Taper Calculator
Form
Results
Taper angle (θ)
0
Taper (T)
0
Table of Contents
1
What is Taper Calculator?
2
How to Use This Calculator
- Enter or select Major diameter (Dₗ), Minor diameter (Dₛ), Length of taper (Tₗ).
- Check the unit beside each measurement. For a percentage or rate, use the scale and time period stated in the form.
- Choose Calculate, then compare the output with the formula and example below. If you change a value or option, calculate again to update the result.
3
Formula Used
Taper per length = (major diameter−minor diameter)/length
4
Variables Explained
| Input | What it means |
|---|---|
| Major diameter (Dₗ) | Distance across a circle through its center; twice the radius. |
| Minor diameter (Dₛ) | Distance across a circle through its center; twice the radius. |
| Length of taper (Tₗ) | The measured end-to-end distance of the section being calculated. |
5
Worked Example
Diameters 30 mm and 20 mm over 100 mm give taper 0.1, or 1 in 10.
6
Why Use This Calculator?
Use the result to put measurements on a common basis before comparing them or estimating quantities. The original measurement precision still limits the precision of the answer.
7
Common Mistakes
- The half-angle uses half the diameter difference; do not confuse it with the included angle.
8
Frequently Asked Questions
When should I round a measurement?
Carry the measured values and conversion factors through the calculation first. Round the final result to a precision justified by the original measurements.
Why can a supplier’s quantity differ?
Measurement conventions, nominal sizes, density assumptions and purchase rounding can change a practical quantity. Compare the units and assumptions before comparing the numbers.
9
Sources & References
Mini Calculator provides online calculators for multiple niches including mathematical, financial, Health, informative, Chemistry, physics, statistics, and conversions. You can use any calculator for free without any limits.
© 2026 MiniCalculators.com. All rights reserved.