Everyday Tools

Calculation·mathematics tools

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31 free tools

31 tools.

Calculation·mathematics
04 / Math and calculations

Percentage calculator

Calculate the amount and ratio value after applying a certain percentage from the total value.

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05 / Math and calculations

Percentage change calculator

Compare the previous and next values to check the change and increase/decrease rate.

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06 / Math and calculations

Percentage difference calculator

Calculates relative differences based on the average of two positive measurements.

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07 / Math and calculations

Simplified ratio calculator

Simplify the ratio of two integers by their greatest common divisor and calculate the composition ratio.

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08 / Math and calculations

Proportion calculator

A:B = C:X calculates the unknown X in the proportional equation.

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09 / Math and calculations

Average calculator

Calculates the count, total, and arithmetic average of a number list.

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10 / Calculation·Mathematics

Weighted average calculator

Enter the value and the weight corresponding to its importance to calculate a weighted average.

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11 / Math·Calculations

Median and mode calculator

Aligns items to check the median, mode, minimum, and maximum.

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12 / Math·Calculations

Standard deviation calculator

Calculates the population and standard deviation of numerical data.

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13 / Math and Calculations

Greatest common divisor·Least common multiple calculator

Calculate the greatest common divisor and multiple criteria for multiple positive whole numbers.

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14 / Math and Calculations

Fraction calculator

Convert the results of two fraction operations into rational fractions.

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15 / Math and Calculations

Quadratic Equation Calculator

Find the discriminant and real or complex conjugate roots of ax²+bx+c=0.

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16 / Math and Calculations

Triangle area calculator

Verify whether a triangle can be formed, its perimeter, and its area using the lengths of all three sides.

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17 / math

Circle Area and Circumference Calculator

Calculate the diameter·circumference·area of a sphere using radius.

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18 / math

Rectangle calculator

Calculates area, perimeter, and diagonal in horizontal and vertical dimensions.

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19 / math

Trapezoid Area Calculator

Calculates the trapezoid area using parallel sides and height.

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20 / Calculation·Mathematics

Cylinder volume calculator

Calculate the volume and outer area of a cylinder using radius and height.

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21 / Calculations·Mathematics

Cone Volume Calculator

Calculates the volume, surface area, and outer surface of a cone.

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22 / Calculations·Mathematics

Volume·surface area calculator

Enter the radius to calculate the volume and surface area of a sphere.

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23 / Calculations·Mathematics

Pythagorean Calculator

Calculate the altitude between two right angles of a right triangle.

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24 / Calculations·Mathematics

Arithmetic Sequence Calculator

Calculate the last term and the sum using the first term, common difference, and number of terms.

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25 / Calculations·Mathematics

Geometric Sequence Calculator

Calculate the last term and the total sum using the first term, common ratio, and number of terms.

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26 / Calculations·Mathematics

PermutationCombination Calculator

Calculates the permutations and combinations of selecting r out of n different items.

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27 / Calculations·Mathematics

Prime Factorization Calculator

Break down a positive integer into decimal parts.

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28 / Calculations·Mathematics

Rounding, Ceiling, and Floor Calculator

Comparing three rounding methods based on selected decimal places

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145 / Math and Calculations

Linear equation calculator

Solve the linear system of equations with coefficient and right side. Check for no solution, unique solution, free variable, and row elimination steps.

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146 / Math and Calculations

Matrix calculator

Calculate matrix addition, subtraction, multiplication, transposition, determinant, inverse matrix, and RREF. Check the row elimination process and numerical tolerance.

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147 / Math and Calculations

Regression and correlation calculator

Use x, y data to check regression line·Pearson correlation coefficient·R² and residual. Plot points and predicted values, then save as CSV·SVG.

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148 / Math and Calculations

Binomial Probability Calculator

Calculate exact, less than, greater than, and interval probabilities using execution frequency and success probability. Save an exponential distribution graph and a total probability table.

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199 / math

Draw function graph

Compare sin·cos·tan and polynomials on the same screen. Set the x·y range and angle units, check coordinates with the slider, then save as SVG.

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200 / Calculation·Mathematics

Scientific Calculator

Calculate brackets, powers, factorials, trigonometric functions, and log formulas directly. Provides circle and radians modes and current tab calculation history.

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