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175 tools
A/B test sample size calculator. Enter your baseline conversion rate and minimum detectable lift to see the visitors per variant you need, plus estimated test duration. Includes a bandit comparison.
Right triangle calculator to compute side length, angle, height, area, and perimeter of a right triangle given any 2 values. It gives the calculation steps.
Discover what the factors of 15 and 24 or any number are easily with our efficient number factor calculator. Simplify your math challenges. Calculate now!
Calculates complex mathematical expressions with double-digit precision, supporting both button click and keyboard input for ease of use. Ideal for students, scientists, engineers, and anyone needing quick, accurate calculations in various fields of study and work.
This calculator computes the surface area of a number of common shapes, including sphere, cone, cube, cylinder, capsule, cap, conical frustum, and more.
Calculates the length of an arc of a circle and the area of a sector using simple input fields for radius, central angle in degrees or radians. User enters the known values, clicks calculate, and receives precise measurements. Students, teachers, architects, engineers, and anyone needing to determine distances along curved paths in circles will find this tool invaluable for quick, accurate calculations without manual trigonometric computations.
Calculates the area, perimeter, and side lengths for an arbitrary trapezoid using its bases and height as inputs. Helps users understand geometric properties and solve problems involving trapezoids in mathematics and engineering applications. Ideal for students, teachers, engineers, and anyone needing to work with trapezoidal shapes in their projects or studies.
Calculates properties of regular octagons, including area, perimeter, diagonals, circumradius, and inradius, using simple input fields for side length or other relevant measurements. Ideal for students, teachers, architects, engineers, and anyone needing to quickly determine geometric dimensions of an octagon. Helps users by providing accurate, quick calculations for various properties of regular octagons, aiding in educational settings, design projects, and everyday problem-solving involving irregular shapes.
Calculates hexadecimal arithmetic operations like addition, subtraction, multiplication, and division, as well as converts between hexadecimal and decimal values. Ideal for developers, students of computer science, and anyone needing to work with hexadecimal numbers in mathematics or programming. Helps users quickly perform complex hexadecimal calculations and conversions without manual errors, saving time and reducing the likelihood of mistakes in technical fields where precision is crucial.
Calculates the percentage error between an observed value and the true value of a measurement. Enter the measured value and the actual value, then click calculate to find the percentage deviation from the true value. Useful for scientific experiments, engineering calculations, and any field requiring accuracy assessments. Students, teachers, scientists, and engineers use this tool to verify the precision of their measurements, ensuring results are reliable and accurate. It's a quick way to understand how close an observed result is to the expected or accepted value.
Calculates permutations and combinations, determining the number of ways r elements can be selected from a set of n elements. It helps users in fields requiring statistical analysis, probability calculations, and combinatorial mathematics to quickly find solutions without manual computation. Students, researchers, statisticians, and anyone needing to solve problems related to selecting items from a larger set will benefit from this tool for accuracy and time savings.
Calculator to compute the confidence interval or margin of error of a sample based on the desired confidence level. It also provides an error bar diagram.
Free calculators to compute the distance between two coordinates on a 2D plane or 3D space. Distance calculators for two points on a map are also provided.
Pythagorean Theorem calculator to find out the unknown length of a right triangle. It can provide the calculation steps, area, perimeter, height, and angles.
Calculates terms and sums of arithmetic, geometric, or Fibonacci sequences based on user input for initial terms or ratio. Helps users explore number patterns and mathematical concepts through practical calculations. Educators, students, mathematicians, and anyone interested in number theory can use this tool to verify sequence calculations, generate examples for learning, or test hypotheses about sequence behavior.
This calculator determines the mean, median, mode, and range of a given data set. Also, learn more about these statistical values and when each should be used.
This free triangle calculator computes the edges, angles, area, height, perimeter, median, as well as other values and a diagram of the resulting triangle.
Free calculator to perform matrix operations on one or two matrices, including addition, subtraction, multiplication, determinant, inverse, or transpose.
Find out your higher education GPA with this college GPA calculator. Enter up to 30 courses and their credits, and add your previous scores optionally to calculate your GPA and cumulative GPA.
Calculates the greatest common factor (GCF) of a set of numbers by determining the largest number that divides evenly into each member of the set. Users input their numbers, and the calculator outputs the GCF, along with explanations using various methods such as listing factors or prime factorization. Helps users in mathematics, particularly those studying number theory, to quickly find common divisors among numbers. Ideal for students, educators, and anyone needing a quick reference for GCF calculations in academic settings or practical applications like simplifying fractions or solving equations.
The system of equations calculator allows you to solve systems of two or three linear equations and tells you what your solution looks like, even if there are an infinite number of them.
Calculates the area, perimeter, and diagonal of a rectangle given its length and width. Enter the dimensions, and the tool automatically computes all relevant measurements. Students, teachers, architects, and anyone working with geometric shapes will find this calculator useful for quick calculations or educational purposes. It simplifies complex geometry problems into straightforward computations.
Ellipse calculator finds all the parameters of an ellipse – its area, perimeter, and eccentricity, as well as the coordinates of the center, foci, and vertices.
This statistics calculator computes a number of common statistical values including standard deviation, mean, sum, geometric mean, and more, given a data set.
