calculator

Online Fraction Calculator

Fraction calculator: add, subtract, multiply and divide fractions or integers. Simplify results, show steps, mixed numbers and decimals, and convert decimals......

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Scientific Calculator

Free online scientific calculator supporting arithmetic, parentheses, percentages, powers and roots, factorials, trigonometric and inverse trigonometric func......

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Percentage Calculator

Free online percentage calculator with four modes: find a percentage of a value, find what percentage one number is of another, increase or decrease a value ......

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Ratio Calculator

Free online ratio calculator: solve the fourth term from three known terms in A : B = C : D, simplify ratios to lowest terms, and split a total by ratio. Sup......

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Average Calculator

Free online average calculator: paste a set of numbers to get the count, sum, mean, median, mode, maximum, minimum, and range at once. Supports line breaks, ......

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Online Calculators

Online Calculators provide a collection of practical mathematical and everyday calculation tools. No software installation or account registration is required. Use them directly in your browser for daily calculations, learning, office work, and development-related numerical tasks.

Common Calculation Tools

Choose the appropriate online calculator based on the type of calculation you need.

Percentage Calculator

Calculate percentages, determine what percentage one number represents of another, and calculate percentage changes and differences.

Fraction Calculator

Perform fraction addition, subtraction, multiplication, and division, and view simplified fractions, mixed numbers, and decimal results.

Statistics Calculator

Enter a set of numbers to calculate the mean, median, mode, sum, maximum, minimum, and range.

Ratio Calculator

Solve for an unknown value in a proportion, simplify ratios, and divide a total amount according to a specified ratio.

Permutations and Combinations

Calculate permutations, combinations, factorials, and other common combinatorial results.

Scientific Calculator

Perform common scientific calculations including trigonometric functions, logarithms, powers, square roots, and factorials.

How to Use Online Calculators

Select the calculation tool you need, enter the required values, and click the calculate button to view the result. Each tool provides results and calculation information appropriate to its calculation type.

Privacy and Local Processing

For calculators that support browser-based local processing, calculations can be performed directly on your device without uploading input data to a server. Refer to the individual tool page for its specific processing method.