Mathematics Calculators
Percentages, rule of three and mathematical tools
Percentage Calculator
Calculate percentages quickly and easily. Percentage value, base value, percentage rate and percentage change.
Open calculatorRule of Three Calculator
Solve rule-of-three problems easily and quickly. Direct and inverse proportion with calculation steps.
Open calculatorFraction Calculator
Add, subtract, multiply and divide fractions. With simplifying and expanding.
Open calculatorOnline Calculator
Scientific calculator with all basic operations and advanced functions.
Open calculatorSquare Meter Calculator
Calculate the area in square meters. For rooms, plots and living space.
Open calculatorTriangle Calculator
Calculate area, perimeter and angles of a triangle. With side lengths or angles.
Open calculatorCircle Calculator
Calculate area, circumference, radius and diameter of a circle.
Open calculatorCylinder Calculator
Calculate volume, lateral surface and surface area of a cylinder.
Open calculatorVolume Calculator
Calculate the volume of various geometric shapes. Cuboid, sphere, cone and more.
Open calculatorCubic Meter Calculator
Convert cubic meters, liters and other volume units. For construction, garden and transport.
Open calculatorSpeed Calculator
Calculate speed, distance or time. For km/h, m/s and other units.
Open calculatorScale Calculator
Convert lengths to scale. For maps, model building and technical drawings.
Open calculatorSlope and Gradient Calculator
Calculate slope or gradient in percent and degrees. For roads, roofs and ramps.
Open calculatorMean Calculator
Calculate arithmetic mean, median, mode and weighted average.
Open calculatorStatistics Calculator
Calculate statistical measures. Standard deviation, variance, quartiles and more.
Open calculatorRandom Number Generator
Generate random numbers in any range. For lottery, games and statistics.
Open calculatorRoman Numeral Converter
Convert Arabic numbers to Roman numerals and vice versa.
Open calculatorNumber System Converter
Convert between decimal, binary, octal and hexadecimal systems.
Open calculatorCombinatorics Calculator
Calculate permutations and combinations. With and without repetition.
Open calculatorPixel Calculator
Convert between pixels, centimeters and DPI. For image editing and print preparation.
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