Open Belt Length Estimate

How to use this tool

1. Enter the measurements and assumptions in the labeled fields.
2. Run the calculation and check the units in the output.
3. Copy or download the result.

Try this example

{"a": 200, "b": 100, "distance": 500}

Accuracy and scope

Approximate open-belt geometry. Requires center distance greater than half the sum of pulley diameters; use pitch diameters.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.