Area Calculator

Calculate the area of any shape instantly

Choose a Shape

Side Length

unit

Formula: side²

Result

Shape

square

Calculation

5² = 25.0000

Area

25.0000

unit²

Quick Summary

Area of square

25.0000

unit²

Dimensions

side: 5.00 unit

Formula Used

5² = 25.0000

Frequently Asked Questions

What is area and how is it measured?

Area is the measure of space inside a 2D shape. It is measured in square units (e.g., square meters, square feet, square inches). The specific formula for calculating area depends on the shape.

How do I calculate the area of a square?

A square has all sides equal. To calculate the area, multiply one side by itself: Area = side². For example, a square with a side of 5 units has an area of 25 square units.

What is the difference between a rectangle and a parallelogram?

A rectangle has four right angles (90°), while a parallelogram has opposite sides parallel but angles are not necessarily 90°. Both use the formula: Area = base × height, but for a rectangle, height is the same as the width.

How is the area of a triangle calculated?

The area of a triangle is half the product of its base and height: Area = (base × height) / 2. The height must be perpendicular to the base. This formula works for all triangles, including scalene, isosceles, and equilateral triangles.

What is a trapezoid and how do I find its area?

A trapezoid is a quadrilateral with at least one pair of parallel sides. Its area is calculated using: Area = ((base1 + base2) / 2) × height, where base1 and base2 are the lengths of the parallel sides and height is the perpendicular distance between them.

How is the area of a circle calculated?

The area of a circle is calculated using the formula: Area = π × r², where r is the radius (distance from center to edge). Pi (π) is approximately 3.14159. For example, a circle with radius 5 has an area of about 78.54 square units.

What is an ellipse and how is its area different from a circle?

An ellipse is an oval shape with two radii: the semi-major axis (a) and semi-minor axis (b). Its area is: Area = π × a × b. When both radii are equal (a = b), an ellipse becomes a circle. An ellipse is more elongated than a circle.

Can I use this calculator for different units?

Yes! This calculator works with any unit of measurement (meters, feet, inches, centimeters, etc.). The result will be in square units of whatever unit you input. For example, if you enter measurements in feet, the area will be in square feet.

Pro Tips

• Always ensure measurements are in the same unit before calculating. Converting units after calculation is easier than mixing units during input.
• For triangles, the height must be perpendicular to the base. A slanted side is not the same as the height.
• Remember that a circle has infinite sides, so its area formula uses π (pi), which is approximately 3.14159.
• For irregular shapes, try breaking them down into simpler shapes (rectangles, triangles), calculate each area, then add them together.
• Double-check your inputs for typos. A small error in measurement can significantly affect the calculated area.
• The area of a shape is always positive. If you get a negative result, check that all your dimensions are positive numbers.

Update Logs

View the latest updates and features

Network Analysis

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Timers

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Set up custom interval timers for workouts or tasks to help you stay focused and productive.

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Set a 5-minute timer for quick tasks, short breaks, meditation, or any activity that needs precise timing.

10 Minute Timer

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15 Minute Timer

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20 Minute Timer

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25 Minute Timer

Set a 25-minute countdown timer for longer tasks, workouts, cooking, or extended focus sessions.

30 Minute Timer

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35 Minute Timer

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40 Minute Timer

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45 Minute Timer

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50 Minute Timer

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55 Minute Timer

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60 Minute Timer

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90 Minute Timer

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120 Minute Timer

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240 Minute Timer

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Time Zones

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Time zones Lookup

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Current time in Mountain Daylight Time (MDT) with customizable display options and fullscreen mode.

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CST to EST Converter

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MST to PST Converter

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PST to MST Converter

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CST to MST Converter

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MST to CST Converter

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CST to PST Converter

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PST to CST Converter

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UTC to EST Converter

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PST to UTC Converter

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UTC to PST Converter

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EST to GMT Converter

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GMT to EST Converter

Convert Greenwich Mean Time (GMT) to Eastern Standard Time (EST) with interactive time picker, conversion chart, and quick reference.

GMT to PST Converter

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GMT to CST Converter

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GMT to MST Converter

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Calculator

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Annual Mileage Calculator

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Area Calculator

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Calorie Burned Calculator

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Erlang Calculator

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IP Subnet Calculator

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Fuel to Distance Calculator

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Paycheck Calculator

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Savings Goal Calculator

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Cumulative GPA Calculator

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Investment Return Calculator

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Watts to kWh Calculator

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Cubic Yards to Tons Calculator

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Ohm's Law Calculator

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Square Footage Calculator

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Mixed Number Calculator

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Improper Fraction to Mixed Number Calculator

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Mixed Number to Improper Fraction Calculator

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Decimal to Fraction Calculator

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Partial Fraction Decomposition Calculator

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Daily Calorie Needs Calculator

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Break-Even Point Calculator

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Amps to Watts Calculator

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Stoichiometry Calculator

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Random

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Random 6 Digit Number Generator

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Random Number Between 1 And 50

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Mcdonald or KFC

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Random Quote Generator

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JSON Randomizer

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Engineering

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Resistor Color Code Calculator

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Capacitor Value Calculator

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Wire Gauge Converter

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Wave Frequency Calculator

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Fourier Series Visualizer

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Sampling & Nyquist Calculator

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Beam Deflection Calculator

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Bolt Torque Calculator

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Gear Ratio Calculator

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Molar Mass Calculator

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Ideal Gas Law Calculator

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Op-Amp Calculator

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Heat Transfer Calculator

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Transformer Turns Calculator

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Power Electronics Calculator

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Motor RPM Calculation

Calculate motor rotational speed from Hall-effect sensors, encoders, tachometers, and back-EMF measurements. Includes filtering, calibration, and performance analysis for motor control applications.

KVAR Calculator

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HP to kW Motor Converter

Convert between horsepower (HP) and kilowatts (kW) for mechanical, electrical, and metric motor ratings with efficiency and load adjustments for engineering applications.

mAh to Wh Converter

Convert battery capacity between milliamp-hours (mAh) and watt-hours (Wh). Calculate energy storage for batteries, power banks, and electronic devices.

kW to kWh Converter

Convert kilowatts (kW) to kilowatt-hours (kWh) and calculate energy consumption from power and time. Estimate electricity costs for appliances and devices.

kWh to Watts Converter

Convert kilowatt-hours (kWh) to watts and calculate average power consumption from energy and time. Understand device power ratings and energy usage patterns.

Screensaver

A free backlight bleed tester to check dead pixels, backlight bleeding. Test monitor, laptop, mobile screen or other display issues.

Quickly detect dead pixels, screen flicker, or backlight bleed on any monitor with our advanced display testing tool.

Spot dead pixels, color uniformity issues, or backlight bleeding fast-ensure your screen quality with our pixel checker.

Instantly check for dead pixels, backlight bleed, or display defects to guarantee flawless screen performance.

Test your monitor for dead pixels, backlight bleeding, and color inconsistencies in seconds with our display diagnostic tool.

Identify dead pixels, uneven backlighting, or screen defects easily-optimize your monitor's display quality now.

Find and fix dead pixels, backlight bleeding, or display issues using our comprehensive screen testing solution.

Ensure perfect screen quality by detecting dead pixels, backlight bleed, and other monitor issues instantly.

Diagnose dead pixels, backlight bleeding, or display problems quickly-improve your monitor's performance and viewing experience.

Uncover dead pixels, backlight bleed, or screen defects fast with our user-friendly display testing tool.

Verify your screen for dead pixels, backlight bleeding, or color issues to maintain top display performance.

Easily detect dead pixels, backlight bleed, and other screen issues to ensure your display's optimal quality.

Quickly identify and troubleshoot dead pixels, backlight bleeding, and display defects for a flawless viewing experience.

Display the local time on your screensaver, automatically adjusting to your current time zone for accurate, real-time clock display.

A screensaver that displays the current date and time. Real-time clock display on your desktop or device.

Elegant clock screensaver displaying the current time with customizable styles, perfect for adding a sleek look to your screen.

Utilities

Quickly test your webcam and verify camera settings to ensure optimal video quality and proper device functionality.

Microphone Test

Test your microphone and verify settings to ensure clear audio quality and proper device performance for free.

Flashlight Tester

Test your flashlight and verify settings to ensure optimal lighting and proper device functionality for free.

Morse Code Translator

Free online Morse code generator. Convert text to Morse code, e.g.: SOS in morse code, and vice versa.

View, edit, and manage your browser cookies effortlessly to control privacy, enhance security, and customize your browsing experience.

Credit Card Number Validation

Validate credit card numbers using the Luhn algorithm to ensure they are valid and secure.

Online Tally Counter

Free online tally counter with multiple counters, labels, and total calculation. Perfect for counting, tracking, and tallying various items.

Spacebar Counter

Simple spacebar counter - press spacebar or click + button to count. Perfect for counting repetitions, events, or any activity.

Password Strength Tester

Test your password strength and learn how secure your password is. Get real-time feedback and tips to create stronger passwords.

Website Screenshot

Generate screenshots of websites by entering a URL, with options for different device viewports (mobile, tablet, desktop) and full-page captures.

Color Blindness Simulator

Simulate how colors appear to users with different types of color blindness to ensure designs are accessible to users with color vision deficiencies.

Track and compare weight progress for multiple users. Add, edit, and delete weight records with visual progress reports and user comparison.

Printable

Printable Calendar

Generate and download printable monthly calendars for any month and year. Perfect for planning, organizing, and printing.

January 2025 Calendar

Generate and download printable January 2025 Calendar. Perfect for planning, organizing, and printing.

February 2025 Calendar

Generate and download printable February 2025 Calendar. Perfect for planning, organizing, and printing.

March 2025 Calendar

Generate and download printable March 2025 Calendar. Perfect for planning, organizing, and printing.

April 2025 Calendar

Generate and download printable April 2025 Calendar. Perfect for planning, organizing, and printing.

May 2025 Calendar

Generate and download printable May 2025 Calendar. Perfect for planning, organizing, and printing.

June 2025 Calendar

Generate and download printable June 2025 Calendar. Perfect for planning, organizing, and printing.

July 2025 Calendar

Generate and download printable July 2025 Calendar. Perfect for planning, organizing, and printing.

August 2025 Calendar

Generate and download printable August 2025 Calendar. Perfect for planning, organizing, and printing.

September 2025 Calendar

Generate and download printable September 2025 Calendar. Perfect for planning, organizing, and printing.

October 2025 Calendar

Generate and download printable October 2025 Calendar. Perfect for planning, organizing, and printing.

November 2025 Calendar

Generate and download printable November 2025 Calendar. Perfect for planning, organizing, and printing.

December 2025 Calendar

Generate and download printable December 2025 Calendar. Perfect for planning, organizing, and printing.

January 2026 Calendar

Generate and download printable January 2026 Calendar. Perfect for planning, organizing, and printing.

February 2026 Calendar

Generate and download printable February 2026 Calendar. Perfect for planning, organizing, and printing.

March 2026 Calendar

Generate and download printable March 2026 Calendar. Perfect for planning, organizing, and printing.