Given any two of the following: arc length, chord length, rise, or radius, calculate the remaining value.
Author: tonagaiExecutions: 2237358
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The most common reasons why the calculator doesn’t work or doesn’t produce an answer are:
(1) You haven’t entered “0” for the two values you want to calculate—don’t leave them blank.
(2) You’ve entered impossible values (for example, the chord length is longer than the arc length).
(3) The number of values entered and the number of values set to “0” do not match.
Please check these points.
(1) You haven’t entered “0” for the two values you want to calculate—don’t leave them blank.
(2) You’ve entered impossible values (for example, the chord length is longer than the arc length).
(3) The number of values entered and the number of values set to “0” do not match.
Please check these points.
| Arc length | |
| String Length | |
| Yataka | |
| Radius | |
| Central Angle | ° |
| Arc length | Only if there is another solution |
| String Length | Only if there is another solution |
| Yataka | Only if there is another solution |
| Radius | Only if there is another solution |
| Central Angle | °Only if there is another solution |
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*It now supports central angles greater than 180° and cases where there are two solutions.
*January 2026
We have created a new version with significantly improved design and usability. Please feel free to use this one as well.
https://sci.tea-nifty.com/blog/files/circlecalc.html