Student calculators
Work through everyday course calculations with clear formulas and useful limits. All six calculators run in your browser, with no signup.
Arithmetic calculator
Evaluate arithmetic with parentheses, powers, and the usual order of operations.
Open calculatorPercentage calculator
Find a percentage, percentage change, or the difference between two values.
Open calculatorWeighted grade calculator
Check your grade so far using assignment scores and their share of your course.
Open calculatorGPA calculator
Calculate a credit-weighted GPA with a clear, unweighted 4.0 letter-grade scale.
Open calculatorFraction calculator
Add, subtract, multiply, or divide fractions and see a simplified answer.
Open calculatorLinear equation calculator
Solve a simple equation for x, including brackets and x on both sides.
Open calculatorThese calculators use defined arithmetic rules. The linear equation tool solves one variable to the first power; it does not solve every algebra or calculus problem. Check course-specific grading rules with your school.