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Area Conversion Calculator
From square inches to acres, measure any space with precision.Area Converter
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Updated on September 1, 2025
Our Area Conversion Calculator is designed to make area measurements easier than ever. Whether you're working with square meters, square feet, acres, or other units, this tool ensures fast and precise conversions. In this guide, I’ll walk you through how the calculator works, list the supported units, and highlight its key features to simplify your area conversion process.About Our Area Conversion Calculator
Written By
Nadiba Rahman
Reviewed by
Mrinmoy Roy
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What is Area?
Area is the amount of space a flat surface or shape covers. It is a two-dimensional concept that tells us how much room lies within a boundary, like the interior of a rectangle, circle, or any other shape.Area is measured in square units such as square meters (m²), square centimeters (cm²), square feet (ft²), or acres. It is widely used in geometry, construction, real estate, farming, and everyday tasks like painting or installing new floors. To measure area accurately, tools like rulers, measuring tapes, or digital measuring apps are often used.
Common Types of Areas
Different shapes require different formulas for area calculation. Here’s a quick summary of the common types of areas:| Types of Area | Formula | Figure |
|---|---|---|
| Circular | π × Radius × Radius |  |
| Rectangular | Length × Width |  |
| Square | Side × Side |  |
| Triangular | 0.5 * Base * Height |  |
Irregular:
| Sector: (θ/360) × π × Radius × Radius Trapezoid: 0.5 × (Base₁ + Base₂) × Height Ellipse: π × Semi-major Axis × Semi-minor Axis Parallelogram: Base × Height |  |
Conversion Units Available in Our Area Converter
Here are the 14 area units you can convert using our area converter:- Acres: An acre is used in the US and UK. One acre is 4,840 square yards or 43,560 square feet.
- Ares: An are is a metric unit. One “are” is 100 square meters.
- Hectares: A hectare is a common metric unit for land measurement. One hectare is 10,000 square meters or 2.471 acres.
- Hides: A hide is an old English land measurement. It usually covered about 120 acres.
- Roods: A rood is a historic British unit of area. One “rood” equals 1/4 acre or 10,890 square feet.
- Square Centimeters (cm²): A square centimeter is a small metric unit of area. One square centimeter equals the area of a square that is 1 cm on each side.
- Square Feet (ft²): A square foot is a common US and UK unit. One square foot equals the area of a square that is 1 foot on each side.
- Square Inches (in²): A square inch is a small unit used mainly in the US. One square inch equals the area of a square that is 1 inch on each side.
- Square Kilometers (km²): A square kilometer is a large metric unit of area. One square kilometer equals 1,000,000 square meters.
- Square Meters (m²): A square meter is the base unit of area in the metric system. One square meter equals the area of a square that is 1 meter on each side.
- Square Miles (mi²): A square mile is a large unit of area used in the US and UK. One square mile equals 640 acres or about 2.59 square kilometers.
- Square Millimeters (mm²): A square millimeter is a very small metric unit. One square millimeter equals the area of a square that is 1 millimeter on each side.
- Square Yards (yd²): A square yard is a unit used in the US and UK. One square yard equals the area of a square that is 1 yard on each side or 9 square feet.
- Township: A township is a US land measurement unit. One township equals 36 square miles.
How to Use Our Area Conversion Calculator?
To use our area conversion calculator, follow the steps below:- Select the input and output units you want to convert from and to.
- Input the numerical value of the area in the ‘Convert from’ field.
- Get instant results in the desired field.You will see a real-time conversion formula at the bottom of the unit section as soon as you select the units, which shows the relation between the units.
- Use the one-click copy button to copy the result instantly.
Features of Our Area Conversion Calculator
Our area conversion calculator offers a variety of powerful features designed to make converting any area unit simple and precise. You can access all these features from the settings menu. The following image shows the default settings for different options.
Adjustable Decimal Precision
Area measurements often require highly specific values, especially in architecture, construction, or land surveying. A tiny error in decimals can lead to costly miscalculations. That’s why our area conversion calculator allows you to adjust the decimal precisiBy default, it displays results up to 6 decimal places, but you can set it anywhere between 0 and 12. Take the following image as an example:
Rounding Mode Control
Small differences in area values can lead to significant issues in the real world. For example, if your floor plan measurement is 50.9 square feet but rounds down to 50 square feet, it could impact the entire layout.To avoid such issues, our calculator lets you enable rounding mode and choose how values are rounded: Round up (Ceiling) or Round down (Floor). By default, rounding is off, but you can activate and customize it based on your project needs.
Flexible Number Display Format
Different area measurements require different number formats. For basic area conversions, the standard decimal format works best because it clearly shows the full number. But if you’re dealing with very large or very small areas, such as converting square nanometers to square kilometers, using scientific or engineering notation makes the values easier to read and understand at a glance.To move beyond the usual fixed output system, our area converter lets you choose the number format that suits your needs:
- Standard Decimal (e.g. 12.34524502)
- Engineering Format (e.g. 1.2345245 × 10^1)
Thousand Separators Toggle
Large numbers like 3485734.85 square centimeters can be tough to scan and read correctly. So, to prevent input errors and ease your area conversions, we’ve included a Thousand Separator toggle feature. When turned on, the calculator automatically formats big numbers with commas for better readability.
Built-in Scientific Calculator
If you suddenly need to multiply, divide, or do quick math while converting area, there's no need to open a separate calculator. Our tool includes a built-in scientific calculator that lets you instantly run calculations and apply the results within your area conversions. It saves time and keeps everything in one place.Quick Unit Switch
Sometimes you need to switch between area units, like from square meters to acres or hectares to square feet. Doing it manually can slow you down, so we’ve added a one-tap unit swap button. Just click it to instantly reverse your input and output units. It’s fast and hassle-free.Real-Time Multi-Unit Output
Why convert units one by one when you can see them all instantly? With real-time multi-unit conversion, the calculator shows your result in all major area units simultaneously. Check out the image below for a clear example:
Auto-Saved Conversion History
Our area converter automatically saves your last 10 conversions, even after you close the browser. This makes it easy to revisit, compare, or copy previous results without re-entering any data.Simply open the History tab and select any past entry to load it instantly. This feature saves you time and helps prevent errors, especially when handling multiple area conversions.
Area Conversion Table
To make things easier, we’ve added an Area Conversion Chart. Just click the button below to download this chart and keep it handy for all your area-related measurements!3 Examples of Conversion Using Our Area Converter
An area converter helps you switch between different units of area, such as square meters, square feet, acres, square inches, and square centimeters. Each conversion uses a specific factor based on the relationship between the units. Here's how the conversion formula works:Value of Target Unit = Conversion Factor × Value of Source UnitLet’s look at three common area conversions:1. Convert Square Meters to Square Feet
One square meter is equal to 10.76391 square feet. This conversion factor comes from the fact that 1 meter ≈ 3.28084 feet. So, to convert square meters to square feet, just use this formula:
Square feet = 10.76391 × Square meters
For example, if you want to convert 19 square meters to square feet, simply multiply: 19 × 10.76391 = 204.51429 square feet
In the same way, to go from square feet to square meters, multiply the value by 0.092903 to get the result.
Square feet = 10.76391 × Square meters
For example, if you want to convert 19 square meters to square feet, simply multiply: 19 × 10.76391 = 204.51429 square feet
2. Convert Hectares to Acres
One hectare is equal to 2.471054 acres. To convert hectares to acres, use this simple formula:
Acres = 2.471054 × Hectares
For example, if you have 3 hectares, the conversion would be: 3 × 2.471054 = 7.413162 acres
To go the other way and convert acres to hectares, multiply by 0.404686
Acres = 2.471054 × Hectares
For example, if you have 3 hectares, the conversion would be: 3 × 2.471054 = 7.413162 acres
3. Convert Square Inches to Square Centimeters
To convert square inches to square centimeters, use the formula:
Square centimeters = 6.4516 × Square inches
where 6.4516 is the conversion factor.
For example, to convert 25 square inches to square centimeters: 25 × 6.4516 = 161.29 cm²
To convert square centimeters back to square inches, multiply by 0.155.
Square centimeters = 6.4516 × Square inches
where 6.4516 is the conversion factor.
For example, to convert 25 square inches to square centimeters: 25 × 6.4516 = 161.29 cm²