Calculator hub
Education calculators and tools
Grade, GPA, study, and student planning calculators.
Decimal to Fraction CalculatorConvert a decimal into a simplified fraction for learning and homework checks.GPA CalculatorCalculate a weighted GPA from course credits and grade points on a 4.0 scale.Grade Average CalculatorFind the final exam score needed to reach a target course grade.Grade Needed to Pass CalculatorFind the final assessment score needed to pass a class or reach a target grade.Study Hours PlannerPlan daily study hours from total hours needed and days available.Test Score Percentile CalculatorEstimate percentile rank from a score, average, and standard deviation.Scientific Notation CalculatorConvert a number to scientific notation and engineering notation.Reading Time CalculatorEstimate reading time from word count and reading speed.Australia HELP Repayment Calculator
Australia - 2026/27Estimate compulsory HELP, VSL, SFSS, SSL, ABSTUDY SSL, or AASL repayments using repayment income and current thresholds.New Zealand Student Loan Repayment Calculator
New Zealand - 2026/27Estimate domestic or overseas borrower repayments using annual or pay-period income and current repayment thresholds.
Australia - 2026/27Estimate compulsory HELP, VSL, SFSS, SSL, ABSTUDY SSL, or AASL repayments using repayment income and current thresholds.New Zealand Student Loan Repayment CalculatorNew Zealand - 2026/27Estimate domestic or overseas borrower repayments using annual or pay-period income and current repayment thresholds.Use education calculators as planning tools
Education calculators help turn grades, credits, study time, and score targets into a plan you can adjust. A GPA or weighted-grade result is only as accurate as the grading scale and course weights entered, so copy those details from the syllabus or institution rather than assuming every school uses the same system.
For study and exam planning, compare more than one scenario. Testing a realistic target, an optimistic target, and a minimum acceptable target makes the result more useful than relying on a single estimate.
- Match the calculator to your school or course grading scale.
- Enter credit hours and assessment weights exactly.
- Treat projections as guidance and confirm official results with the institution.