CalcBox

Professional Math Calculator Suite

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Core Calculators

Four professional calculators to learn how to calculate percentage, square footage, and divide fractions

Percentage Calculator
Master how to calculate percentage with multiple calculation modes including basic percentage, growth rates, tax calculations, and compound growth. Step-by-step solutions help you understand the principles.

Making percentage calculations simple and intuitive

Calculation Modes

7 calculation modes
Real-time step solutions
Compound growth calculator
Tax calculations
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Square Footage Calculator
Learn how to calculate square footage for rectangles, circles, triangles, trapezoids, ellipses and more. Visual preview and detailed steps with multiple unit conversions.

Your expert for calculating square footage in construction and daily life

Shape Support

7 geometric shapes
Real-time visual preview
Multiple unit conversion
Composite shape support
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Fraction Calculator
Complete fraction operations including how to divide fractions, add, subtract, multiply and simplify. Convert between fractions, decimals and percentages with visual charts.

Making fraction operations visual and easy to understand

Operation Types

Complete fraction operations
Smart format conversion
3 visualization charts
Step-by-step solutions
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Scientific Calculator
Full-featured scientific calculator supporting basic arithmetic, trigonometric functions, logarithms, and exponentials. Memory functions, history, and keyboard shortcuts included.

Professional-grade scientific calculations for complex operations

Function Library

Complete scientific functions
Memory and history
Keyboard shortcuts
High-precision engine
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Features

Efficient Calculation

Real-time results for complex mathematical operations with fast and accurate calculations

Precise & Reliable

High-precision mathematical algorithms ensure accurate and reliable calculation results

Smart Experience

Elegant user interface design with dark mode and responsive layout for excellent user experience

Frequently Asked Questions

Find answers to frequently asked questions about our calculators

How to calculate percentage?

There are three basic ways to calculate percentage: 1) To find a percentage of a number: multiply the number by the percentage and divide by 100; 2) To calculate percentage increase: (new value - original value) ÷ original value × 100; 3) To find what percentage one number is of another: part ÷ total × 100. Our percentage calculator supports all these calculation types.

How to calculate square footage for different shapes?

Our square footage calculator supports various shapes: rectangles, squares, circles, ellipses, triangles, and trapezoids. Each shape provides visual representation to help you understand how to calculate square footage. Multiple unit conversions are also supported.

How to divide fractions and perform other operations?

Fraction operations include addition, subtraction, multiplication, and division. To divide fractions, multiply the first fraction by the reciprocal of the second. Our fraction calculator handles all these operations automatically with detailed step-by-step solutions.

Are the calculation results accurate?

Our calculators use high-precision algorithms to ensure accurate results. All calculations are thoroughly tested and verified. For complex operations, we use professional mathematical libraries to guarantee precision.

Have more questions?

If you have other questions or suggestions, please contact us via email and we'll respond promptly.

CalcBox - How to Calculate Percentage, Square Footage & Divide Fractions | Free Online Calculators