8 free tools
Maths & Study calculators
Percentages, fractions, ratios, averages, grades and everyday school and work maths. Each tool shows the formula, worked examples and sources.
Maths & StudyAverage CalculatorFind the mean, median, mode, range and standard deviation of a list of numbers.Maths & StudyFinal Grade CalculatorFind the score you need on your final exam to reach the course grade you want.Maths & StudyFraction CalculatorAdd, subtract, multiply and divide fractions and mixed numbers, with the answer in lowest terms.Maths & StudyGCF and LCM CalculatorGreatest common factor (GCD/HCF) and least common multiple of two or more numbers, with prime factorisations.Maths & StudyGPA CalculatorCalculate your term and cumulative grade point average on the 4.0 scale, weighted by credits.Maths & StudyPercentage CalculatorX% of a number, what percent one number is of another, and percentage increase or decrease.Maths & StudyRatio CalculatorSimplify a ratio, solve A : B = C : D for the missing value, or split an amount in a given ratio.Maths & StudyScientific Notation ConverterConvert any number to scientific, E and engineering notation (with SI prefix), or back to a normal decimal, rounded to the significant figures you choose.