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Especially welcome

A wrong number. If the calculator’s output contradicts your math, send the three inputs (current grade, weight, target) plus the result you expected. Scale conventions differ by school — a pass mark at 65, an A+ worth different credit — so if your institution’s scale isn’t among our options, name the convention and where it’s published (syllabus, student handbook, district policy). We verify each report against the source before touching a table.

A missing feature. Semester-cumulative targets? GPA-linked goals? A print-friendly study plan? If you reach for something the calculator doesn’t do, describe the moment — the roadmap follows what students actually ask for.

Awkward Spanish. Our translations are human-maintained. If a phrase reads strangely or a term is wrong for your country’s school system, the better wording is the best possible bug report.

Anything else. Broken pages, mobile layout problems, accessibility issues, partnership requests. The page URL always helps; for calculation problems, so do the numbers you entered.

The reply

No ticket queue, no bot — a person reads the inbox. Corrections and bug reports usually get an answer inside a few days; broader feedback can take longer.