SCHOOL PLANNING AND CORE MATH
School, Math & Student Loans Calculators
Use GPA, grade, math, student-loan, refinance, and college-saving scenarios in one clear workspace.
Choose a calculator
Open a tool and adjust its assumptions for your situation.
Percentages & everyday math
Percentage changes, averages, and quick arithmetic checks.
Percentage CalculatorFind a percent of a number or what percent one number is of another.Percentage Increase CalculatorFind percentage growth between an old and new value.Percentage Decrease CalculatorFind percentage reduction between an old and new value.Average CalculatorFind the arithmetic mean of a list of values.
Grades & school
GPA and final-exam planning based on the weighting in your syllabus.
Student loans and college saving
Payment, payoff, refinance, and 529 planning scenarios.
Student Loan Payment CalculatorModel a fixed-payment scenario with your assumptions.Student Loan Payoff CalculatorEstimate payoff time, interest, and a payment scenario.Student Loan Refinance Scenario CalculatorModel a fixed-payment scenario with your assumptions.529 College Savings CalculatorModel a future balance using contributions and an assumed return.GCF and LCM CalculatorCompare factors and multiples for two integers.Slope CalculatorFind slope from two points on a coordinate plane.
Before you use these estimates
Student loans and education savings can involve federal benefits, eligibility, taxes, fees, and plan-specific rules. Confirm official program information before acting.