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Math & percentages
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57- Roman numeral converterConvert integers from 1 to 3999 to and from standard Roman numeralsOpen tool
- Prime number checkerCheck whether an integer up to one trillion is prime and find a factorOpen tool
- Multiplication table generatorGenerate a multiplication table with a custom number and row countOpen tool
- Basic and scientific calculatorCalculate arithmetic and scientific expressions with a keypad, angle modes, Ans, memory, history and CSV exportOpen tool
- Running pace calculatorCalculate pace per kilometer and average speed from distance and timeOpen tool
- Decision matrixCompare options using your own criteria, weights and scoresOpen tool
- Weighted average calculatorCalculate an average using a weight for each valueOpen tool
- Linear equation solverSolve the equation ax + b = 0Open tool
- Quadratic equation solverFind real or complex roots of ax² + bx + c = 0Open tool
- System of equations solverFind the unique solution of ax + by = c and dx + ey = fOpen tool
- Triangle calculatorCalculate area, perimeter and angles from three side lengthsOpen tool
- Circle calculatorCalculate diameter, circumference and area from a radiusOpen tool
- Rectangle calculatorCalculate area, perimeter and diagonal from width and heightOpen tool
- Trapezoid area calculatorCalculate area from two parallel bases and a heightOpen tool
- Ellipse calculatorCalculate area and Ramanujan's approximate perimeter from two semi axesOpen tool
- Sphere calculatorCalculate a sphere's surface area and volume from its radiusOpen tool
- Cylinder calculatorCalculate a cylinder's total surface area and volumeOpen tool
- Cone calculatorCalculate slant height, surface area and volume of a coneOpen tool
- Cuboid calculatorCalculate a cuboid's surface area, volume and diagonalOpen tool
- Point distance calculatorCalculate the straight line distance between two points in a planeOpen tool
- Line slope calculatorFind the slope and intercept of the line through two pointsOpen tool
- Linear interpolation calculatorCalculate y at a chosen x using two reference pointsOpen tool
- Arithmetic sequence generatorGenerate terms and their sum from a first term and common differenceOpen tool
- Geometric sequence generatorGenerate terms and their sum from a first term and common ratioOpen tool
- Factorial calculatorCalculate factorials from 0 to 1000 as exact integersOpen tool
- Combination calculatorCalculate nCr combinations without considering orderOpen tool
- Permutation calculatorCalculate nPr permutations with order taken into accountOpen tool
- Logarithm calculatorCalculate the logarithm of a positive value with your chosen baseOpen tool
- Scientific notation converterConvert a number to exponential notation with chosen significant digitsOpen tool
- Z score calculatorZ score calculator — choose your inputs and copy or save the resultOpen tool
- Min max normalizerMin max normalizer — choose your inputs and copy or save the resultOpen tool
- Moving average calculatorMoving average calculator — choose your inputs and copy or save the resultOpen tool
- Cumulative sumCumulative sum — choose your inputs and copy or save the resultOpen tool
- Difference seriesDifference series — choose your inputs and copy or save the resultOpen tool
- Histogram bin generatorHistogram bin generator — choose your inputs and copy or save the resultOpen tool
- Numeric frequency tableNumeric frequency table — choose your inputs and copy or save the resultOpen tool
Choose your task
Calculate percentages, mathematics, statistics and financial scenarios.
- Math & percentagesRoman numeral converter · Prime number checker · Multiplication table generator
- Statistics & probabilityStatistics calculator · Percentile calculator · Sample statistics
- Finance & costsTip calculator · Bill splitter · Cost per unit comparison
- Science & engineeringVoltage · Current · Resistance · Calculator · Power · Voltage · Calculator · Resistance · Series · Calculator
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