Scientific & Math
Precise tools for algebra, statistics, geometry, and everything in between.
5 calculators
Scientific & Math calculators are built for the precise, step-by-step work that everyday calculators skip over. This category covers fraction arithmetic, quadratic equations, ratios, general-purpose scientific functions, and statistical measures like standard deviation — the tools most commonly needed in algebra, geometry, and introductory statistics coursework. The Scientific Calculator supports trigonometric, logarithmic, exponential, and factorial functions for quick computation without opening dedicated software. The Quadratic Solver finds real or complex roots along with the discriminant and vertex, showing the full picture behind an equation rather than just an answer. The Standard Deviation calculator reports both population and sample variants so results line up with whichever statistical convention a course or dataset requires. This category is aimed at students working through homework, teachers building examples or checking answers, and anyone — engineers, hobbyists, or professionals — who needs a dependable, no-frills tool for exact math rather than an estimate. Every calculator shows its method clearly, so you can verify how the result was derived and use it as a learning aid, not just an answer key.
Fraction Calculator
Add, subtract, multiply, or divide fractions and get the simplified result.
Open calculatorQuadratic Equation Solver
Solve any quadratic equation ax² + bx + c = 0 and find real or complex roots, the discriminant, and vertex.
Open calculatorRatio Calculator
Simplify ratios and solve for a missing value in an equivalent ratio (A:B = C:D).
Open calculatorScientific Calculator
A full scientific calculator with trigonometric, logarithmic, exponential, and factorial functions.
Open calculatorStandard Deviation Calculator
Calculate the mean, variance, and population or sample standard deviation of a data set.
Open calculatorFrequently asked questions
What operations does the scientific calculator support?
It supports standard arithmetic along with trigonometric functions (sin, cos, tan), logarithms, exponents, square roots, and factorials — the core functions covered in most high school and college math courses.
How do I solve a quadratic equation with complex roots?
Just enter the a, b, and c coefficients from ax² + bx + c = 0. If the discriminant (b² − 4ac) is negative, the Quadratic Solver automatically returns the two complex roots in standard form, along with the discriminant and vertex.
What's the difference between population and sample standard deviation?
Population standard deviation is used when your data set represents an entire population, while sample standard deviation is used when your data is a sample drawn from a larger population — the sample formula divides by (n − 1) instead of n to correct for that. The calculator computes both from the same input.
Can I simplify improper fractions?
Yes. The Fraction Calculator handles addition, subtraction, multiplication, and division, and always returns the result in simplified form, including proper handling of improper fractions.