About apcalc.pro
apcalc.pro is an independent educational calculator website built to help students turn practice-test results into understandable estimates. Our goal is to make the calculation method visible, useful, and easy to verify—not to present an unofficial prediction as an official score.
How our calculators are built
AP calculators use published exam structures and section weights from College Board sources. Each applicable tool identifies its formula, assumptions, version, source links, and last verification date. Estimated 1–5 cutoffs are labeled as planning estimates because official score setting can vary by exam form and administration.
How we maintain accuracy
We retain older exam formats when students may still use matching practice materials, add new versions when published formats change, and run regression tests against documented examples and boundary cases. Students should always select the version that matches their practice exam and consult the linked official source when rules change.
Independence and limitations
apcalc.pro is not affiliated with, sponsored by, or endorsed by College Board, LSAC, AAMC, Texas Instruments, or other source publishers referenced by individual tools. Results are provided for education and planning and do not replace an official score report, school policy, scoring guide, or professional advice.
Questions or corrections
If you find a source update, calculation issue, or unclear explanation, email hello@apcalc.pro. Please include the calculator URL, the values entered, and the result you expected so the issue can be reviewed.