Education
GPA, averages and study maths
Calculators
GPA Calculator
Free GPA calculator: compute your weighted grade point average on a 4.0 scale by entering your courses and credits — with instant letter-grade results.
Percentage Calculator
Free percentage calculator: find what X% of a number is, what one number is as a percent of another, and percentage increase or decrease.
Average Calculator
Free average calculator: enter any list of numbers to instantly find the mean, sum and count. Clear steps and examples, accurate and free — no sign-up needed.
Standard Deviation Calculator
Free standard deviation calculator: find the mean and population or sample standard deviation of a set of numbers, with clear step-by-step working.
Age Calculator
Free age calculator: find your exact age in years, months and days, plus total days, weeks and months from any date of birth.
Date Difference Calculator
Free date difference calculator: count the days, weeks, months and years between any two dates, with a full breakdown. Fast, free and accurate.