8 free tools
Math Tools
Quick math tools for school, work and everyday sums. Every calculator shows the formula it uses and a worked example, so you can check the answer and learn the method at the same time.
MathPercentage CalculatorX% of Y, X is what % of Y, % increase or decrease, and reverse percentage.MathScientific CalculatorOnline scientific calculator with trig, logs, powers, plus quadratic, GCD/LCM and prime tools.MathFraction CalculatorAdd, subtract, multiply and divide fractions and mixed numbers, simplified.MathArea CalculatorArea of rectangles, circles, triangles, trapezoids and more, in sq ft, sq m and acres.MathAverage CalculatorMean, median, mode, range, sum and standard deviation of a list of numbers.MathRandom Number GeneratorRandom numbers in a range, with or without repeats. Great for draws and games.MathRoman Numeral ConverterConvert numbers to Roman numerals and back (1 to 3,999,999).MathNumber to Words ConverterWrite amounts in words for cheques, in lakh/crore or million/billion style.
Which math tool do you need?
- Percentage Calculator: X% of Y, X is what % of Y, % increase or decrease, and reverse percentage.
- Scientific Calculator: Online scientific calculator with trig, logs, powers, plus quadratic, GCD/LCM and prime tools.
- Fraction Calculator: Add, subtract, multiply and divide fractions and mixed numbers, simplified.
- Area Calculator: Area of rectangles, circles, triangles, trapezoids and more, in sq ft, sq m and acres.
- Average Calculator: Mean, median, mode, range, sum and standard deviation of a list of numbers.
- Random Number Generator: Random numbers in a range, with or without repeats. Great for draws and games.
- Roman Numeral Converter: Convert numbers to Roman numerals and back (1 to 3,999,999).
- Number to Words Converter: Write amounts in words for cheques, in lakh/crore or million/billion style.