calc2ool.com

About calc2ool

calc2ool provides practical engineering calculators for mechanical design, hydraulics, material estimates, electrical power and CNC machining. Each calculator includes its formula, assumptions and an example, with English and Korean content and Metric and Imperial units.

Formulas and assumptions

Inputs are converted to SI units before calculation, then converted to the selected display units. Calculations retain precision internally; displayed results are rounded. Review each tool's formula and assumptions when applying its result.

NIST — SI conversion factors ↗

Privacy and your calculations

Calculations run in your browser. No account is required. Analytics and advertising scripts are not enabled in this version. Shared links include your calculation inputs in the URL; anyone with the link can read those values. The hosting provider may process basic access logs when serving the site.