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Arithmetic Calculators

Arithmetic Calculators cover essential math operations like addition, subtraction, multiplication, and division. These tools are perfect for students learning the basics, educators preparing exercises, and anyone needing quick and accurate results for everyday calculations. Whether you’re working with whole numbers, decimals, or large values, these calculators simplify core arithmetic tasks.

Magic Square

This tool generates a magic square — a square grid of distinct numbers where the sums of each row, column, and both diagonals are equal. It’s ideal for students learning number patterns, teachers building puzzles, and math enthusiasts exploring recreational mathematics.

Weighted Mean

This calculator helps you compute the weighted mean of a dataset, where each value contributes according to its assigned weight. It’s ideal for calculating average grades, weighted scores, financial indices, or any scenario where some values matter more than others.

Quadratic Mean

This calculator finds the quadratic mean, also known as the root mean square (RMS), of a set of numbers. It’s commonly used in physics, engineering, and statistics to measure the magnitude of varying quantities, especially when values can be both positive and negative.

Geometric Mean

This calculator helps you compute the geometric mean of a set of positive numbers. It is widely used in statistics, finance, and science when dealing with percentages, ratios, or growth rates. Just enter your values to get the geometric mean instantly.

Harmonic Mean

This calculator computes the harmonic mean of a set of positive numbers. It’s especially useful when averaging rates, ratios, or quantities like speed, density, or efficiency. Just enter your values, and the calculator returns the harmonic mean instantly.

Multiplicative Inverse Modulo

This calculator finds the modular multiplicative inverse of a number with respect to a given modulus. It’s a key tool in number theory and cryptography, used in algorithms like RSA, modular equations, and solving congruences.

Fermat’s Little Theorem

This calculator helps you verify Fermat’s Little Theorem or compute modular exponentiation based on it. It’s useful in number theory, cryptography (like RSA), and math competitions. Enter a base number and a prime modulus to see if the theorem holds.

Floor Division

This calculator performs floor division, which divides two numbers and rounds the result down to the nearest whole number. It’s useful in programming, math, and logic where integer-based division is needed without remainders or decimals.

Euler’s Theorem

This calculator allows you to apply Euler’s Theorem to compute modular exponentiation when the base and modulus are coprime. It’s widely used in number theory and cryptography, especially in RSA and modular arithmetic problems.

Digital Root

This calculator finds the digital root of any non-negative integer — the recursive sum of its digits until a single digit is obtained. It’s widely used in number theory, numerology, and checksum validations.

Nth Root

This calculator finds the nth root of any positive real number. It’s useful in algebra, geometry, and applied sciences for simplifying expressions, solving equations, and analyzing exponential growth and decay.

Chinese Remainder Theorem

This calculator solves systems of simultaneous congruences using the Chinese Remainder Theorem (CRT). It is useful for students and professionals in number theory, cryptography, and modular arithmetic applications.

Average

This calculator helps you find the average (mean) of two or more numbers. Whether you're analyzing grades, survey results, financial data, or any set of values, it gives you a quick and accurate arithmetic average.

Absolute Change

This calculator helps you determine the absolute change between two values — the starting (original) and ending (new) value. It's useful for measuring how much something has increased or decreased in pure units, without considering the relative or percentage change.

Division

This calculator helps you divide numbers accurately and quickly. Whether you're solving basic division problems or working with decimals and large values, it's a helpful tool for students, teachers, and professionals who need instant results.

Multiplication

This calculator helps you multiply two or more numbers instantly. Whether you're a student practicing arithmetic or someone working with large numbers, decimals, or percentages, this tool provides quick and accurate multiplication results.

Subtraction

This calculator helps you subtract one number from another quickly and accurately. Ideal for students learning arithmetic, professionals working with data, or anyone who needs to find the difference between values with ease.

Addition

This calculator helps you quickly add two or more numbers together. Whether you're working with integers, decimals, or large values, it's perfect for students, teachers, or anyone needing a fast and accurate solution for basic addition tasks.

Leibniz Harmonic Triangle

This calculator generates values from the Leibniz Harmonic Triangle, a triangular array similar to Pascal’s Triangle, where each term is calculated using the formula aₙ,ₖ = 1 / k × C(n, k). It is useful in combinatorics and series expansions, especially involving harmonic numbers and integrals.

Floyd’s Triangle Sum

Use this calculator to find the sum of numbers in the n-th row of Floyd’s Triangle. It’s especially useful for math students and educators exploring number patterns. Just enter the row number and get the total instantly!

Team Work Time

This calculator helps you find the total time required to complete a task when two team members work together. Ideal for project managers, engineers, students, and anyone coordinating shared tasks. Simply input the individual times each person would take to complete the task alone, and the calculator shows the combined work time.

Stirling’s Factorial Approximation

Stirling’s Factorial Approximation calculator estimates the factorial of a large number using an efficient logarithmic formula. It’s especially useful in statistics, probability theory, and combinatorics when exact factorial values become too large to compute. This tool provides a fast and accurate approximation using Stirling’s formula.

Sum of Consecutive Cubes

This calculator helps you find the sum of the first n cube numbers quickly and accurately using the formula for consecutive cubes. It’s especially useful for students, teachers, and math enthusiasts looking to simplify complex summation problems without manual calculations.

Sum of Consecutive Squares

This calculator quickly finds the sum of squares of the first n natural numbers using a well-known mathematical formula. It’s ideal for students, teachers, and professionals who need to perform quick calculations in algebra, programming, or physics. Just enter any positive integer n to get the result instantly.

Arithmetic Progression

The Arithmetic Progression calculator helps you find terms, sums, and other key values in a sequence where each term increases or decreases by a constant difference. It’s useful for students, teachers, and anyone dealing with number patterns in math, finance, or everyday problem solving.