면적 계산기

다양한 도형(사각형, 원, 삼각형, 타원 등)의 면적을 계산합니다. 단계별 공식과 함께 제공됩니다. 100% 무료.

Quick Reference

Rectangle: length × width

Circle: π × radius²

Triangle: ½ × base × height

면적 계산기 소개

이 도구는 다양한 도형(사각형, 원, 삼각형, 타원 등)의 면적을 계산합니다. 단계별 공식과 함께 제공됩니다. 100% 무료.

기능

Supported Shapes

How to Use the Area Calculator

  1. Select the geometric shape you want to calculate the area for from the dropdown menu.
  2. Choose your preferred unit system (Metric: cm/m or Imperial: in/ft).
  3. Enter the required measurements for the selected shape (e.g., length and width for a rectangle).
  4. Click the "Calculate" button to get the area and perimeter instantly.
  5. View the formula used and the detailed results below the calculator.
  6. Click "Reset" to clear all inputs and start a new calculation.

Common Use Cases

Frequently Asked Questions

What shapes does this area calculator support?

This calculator supports 8 common geometric shapes: Rectangle, Square, Circle, Triangle, Trapezoid, Parallelogram, Rhombus, and Ellipse. Each shape requires specific measurements to calculate both area and perimeter.

Is this area calculator free to use?

Yes, the area calculator is completely free to use. No registration, no ads, and no limits. All calculations happen in your browser — no data is sent to any server.

Can I switch between metric and imperial units?

Yes, you can choose between centimeters (cm), meters (m), inches (in), and feet (ft). The calculator automatically converts the results to the corresponding area units (cm², m², in², ft²).

Does the calculator show the formula used?

Yes, after calculating, the formula used is displayed in a formula box below the results. This helps you understand the math behind the calculation and is useful for learning and verification.

What is the difference between area and perimeter?

Area measures the space inside a shape (in square units), while perimeter measures the total length of the shape's boundary (in linear units). This calculator provides both values for all supported shapes.

Can I calculate the area of irregular shapes?

This calculator focuses on standard geometric shapes. For irregular shapes, you can break them down into simpler shapes (like rectangles and triangles), calculate each area separately, and then sum them up.

Is the calculator accurate?

Yes, the calculator uses standard mathematical formulas and provides results with up to 4 decimal places for precision. For engineering or critical applications, always verify with additional methods.

Can I use this calculator on mobile devices?

Absolutely. The calculator is fully responsive and works seamlessly on smartphones, tablets, and desktop computers.

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