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Calcora
Calcora

About Calcora

Calcora makes small, precise calculators for the numbers students and planners check most often.

Every tool shows its formula and a worked example, so you can see exactly how a result was reached. The math runs in your browser, so the numbers you enter stay on your device.

Our calculators

  • Weighted Grade Calculator: Combine homework, quizzes and exams by their syllabus weights to get your real class grade.
  • Final Grade Calculator: See the exact score you need on your final exam to finish the class with the grade you want.
  • GPA Calculator: Turn letter grades and credits into weighted and unweighted GPA, with Honors and AP support.
  • Cumulative GPA Calculator: Add this semester to your overall GPA and plan the grades you need to hit a target.
  • Date Calculator: Add or subtract days, weeks, months and years from any date, or measure the gap between two dates.
  • Days Between Dates Calculator: Count the days, weeks and business days between two dates, with an option to include the end date.

Accuracy

Grade tools use the standard U.S. grading scale. Date tools follow the Gregorian calendar, including leap years. Schools set their own grading and GPA rules, so treat results as estimates and confirm anything important with your school.