🧮 Math & Education
Percentage, CGPA to percentage, attendance, HCF and LCM, geometry formulas and base converters for students. 43 free tools.
％ Percentage CalculatorFind X% of a number quickly.％ What Percent Is X of Y CalculatorFind what percentage one number is of another.📈 Percentage Change CalculatorCalculate percentage increase or decrease between two numbers.➕ Increase or Decrease by PercentageIncrease or decrease a number by a percentage.📝 Marks Percentage CalculatorCalculate percentage from marks obtained and total marks.🎓 CGPA to Percentage CalculatorConvert CGPA to percentage using the CBSE 9.5 formula or your own multiplier.🎓 Percentage to CGPA CalculatorConvert percentage to CGPA using the CBSE 9.5 divisor.📚 SGPA and CGPA CalculatorCalculate SGPA or CGPA from credits and grade points.🏫 Attendance Percentage CalculatorFind attendance percentage and how many classes you can skip or must attend for 75%.📊 Average, Median and Mode CalculatorFind mean, median, mode, range and standard deviation of a list of numbers.🔢 HCF and LCM CalculatorFind the HCF (GCD) and LCM of two or more numbers.🧮 Prime Number CheckerCheck whether a number is prime and see its prime factors.❗ Factorial CalculatorCalculate factorial of a number up to 170.√ Square Root and Cube Root CalculatorFind square root, cube root, square and cube of a number.💡 Exponent and Power CalculatorCalculate a number raised to any power.📐 Quadratic Equation SolverSolve ax² + bx + c = 0 and see real or complex roots.½ Fraction SimplifierReduce a fraction to lowest terms and convert to decimal and percent.½ Decimal to Fraction CalculatorConvert a decimal number to a fraction.⚖️ Ratio CalculatorSimplify a ratio and see each part as a percentage.🔢 Proportion CalculatorSolve A : B = C : D for the missing value.Ⅰ Roman Numeral ConverterConvert numbers to Roman numerals and back.💻 Binary to Decimal ConverterBinary to Decimal Converter with instant results.💻 Decimal to Binary ConverterDecimal to Binary Converter with instant results.💻 Hex to Decimal ConverterHex to Decimal Converter with instant results.💻 Decimal to Hex ConverterDecimal to Hex Converter with instant results.💻 Binary to Hex ConverterBinary to Hex Converter with instant results.💻 Hex to Binary ConverterHex to Binary Converter with instant results.💻 Octal to Decimal ConverterOctal to Decimal Converter with instant results.💻 Decimal to Octal ConverterDecimal to Octal Converter with instant results.📐 Circle Area CalculatorArea and circumference of a circle from its radius.📐 Rectangle Area CalculatorArea, perimeter and diagonal of a rectangle.📐 Square Area CalculatorArea, perimeter and diagonal of a square.📐 Triangle Area CalculatorArea and perimeter of a triangle from three sides.📐 Cylinder Volume CalculatorVolume and surface area of a cylinder.📐 Sphere Volume CalculatorVolume and surface area of a sphere.📐 Cone Volume CalculatorVolume, slant height and surface area of a cone.📐 Cube Volume CalculatorVolume and surface area of a cube.📐 Trapezium Area CalculatorArea of a trapezium.📐 Parallelogram Area CalculatorArea of a parallelogram.📐 Pythagoras Theorem CalculatorFind the missing side of a right-angled triangle.🎲 Permutation and Combination CalculatorCalculate nPr and nCr.🏎️ Average Speed CalculatorCalculate average speed from distance and time.🔬 Scientific Notation ConverterConvert numbers to scientific notation.