Basic calculator
Calculate with basic operators and parentheses.
20 TOOLS
Math and geometry
Scientific calculator
Use trigonometry, logarithms, roots and the constants pi and e.
Percentage calculator
Calculate a percentage amount, share or change.
Discount calculator
Apply two sequential discounts and optional tax.
Fraction calculator
Add, subtract, multiply and divide fractions with exact simplification.
Ratio and proportion calculator
Split a total quantity in a chosen ratio.
Rule of three calculator
Find the fourth value in a direct or inverse proportion.
Mean, median and mode calculator
Inspect the mean, median, most frequent values and range.
Quadratic equation calculator
Solve ax² + bx + c = 0, including complex and linear cases.
Linear equation system calculator
Solve two equations of the form a₁x+b₁y=c₁ and a₂x+b₂y=c₂.
Derivative calculator
Find a supported function’s symbolic derivative and its value at a chosen point.
Integral calculator
Numerically evaluate a definite integral between two finite bounds.
Matrix calculator
Calculate a determinant, inverse, transpose or product for matrices up to 6×6.
Powers and roots calculator
Calculate a real power or an integer-degree root.
Logarithm calculator
Calculate the logarithm of a positive number in a chosen base.
Area and perimeter calculator
Choose a shape and enter every length in the same unit.
Volume calculator
Find the volume of a cuboid, cylinder, sphere or cone.
Pythagorean theorem calculator
Find the missing side of a right triangle.
Trigonometry calculator
Find sine, cosine and tangent in degrees or radians.
Probability and combinations calculator
Calculate combinations, permutations and binomial probability.