Area Unit Converter Online - m², Hectares, Acres
Whether you’re a real estate agent appraising an apartment, a farmer planning cultivation on hectares, a DIY enthusiast calculating bathroom tiles, or a student solving geometry, our calculator provides an instant answer.
We support lightning-fast conversions between all common metric units (square meters, ares, hectares, square kilometers) and Anglo-American imperial units (square feet, acres, miles). Our tool is an essential helper for construction, agriculture, and real estate purchases. Everything works online, for free, and without installation.
Smart Calculation: Why Convert Area Here?
Area units are tricky. While 1 meter has 100 centimeters, 1 square meter has 10,000 of them! Calculating these “squares” in your head is risky. Our tool solves this for you.
- Dynamic Calculations: See results instantly as you type. No waiting, no complex formulas.
- Real Estate and Agricultural Standard: We connect the world of housing (m², sq ft) with the world of land (hectares, acres). Ideal if you’re comparing apartment sizes in the USA with those in the Czech Republic or a field for sale.
- Precision for Every Scale: Whether you’re converting square millimeters for a technical drawing or square kilometers for a country’s area, our algorithm handles small and vast numbers (including scientific notation in the “Quick Overview”).
Comprehensive Overview: Understanding Area Units
Area expresses the size of a 2D space. Here’s an overview of the units our converter works with and their practical applications.
| Unit | Abbreviation | Approximate size (in m²) | Where you’ll find it |
|---|---|---|---|
| Square Meter | m² | 1 m² (base unit) | Apartment sales, carpets, wall painting, construction. |
| Are | a | 100 m² | Older measure, still in land registries. A 10x10 m square (large garden). |
| Hectare | ha | 10,000 m² | Agriculture, forestry, large land sales. A 100x100 m square. |
| Square Kilometer | km² | 1,000,000 m² | Areas of cities, lakes, states, national parks. |
| Square Foot | sq ft / ft² | approx. 0.09 m² | Real estate market in USA and UK. Apartments there are given in sq ft, not m². |
| Acre | ac | approx. 4,047 m² | Farms in the USA, historical novels. It’s approx. 40% of a hectare. |
| Square Mile | sq mi | approx. 2.59 km² | Areas in the USA (e.g., the size of New York). |
Guide: How to Use the Converter Correctly
Operation is simple, whether you’re calculating bathroom tiles or a field’s area.
1. Enter the Area
Enter a number into the left field.
- Tip: We support whole numbers and decimals (e.g.,
0.5ha).
2. Choose Units
- In the left menu, select the original unit (e.g., “square millimeter”, as shown in the image).
- In the right menu, select the target unit (e.g., “square centimeter”).
- The arrow button in the middle is for quick swapping.
3. Use the “Quick Overview”
This table below the widget is invaluable for quick orientation. If you enter 1000 mm², you immediately see that it’s 10 cm², but in the context of hectares (ha) or kilometers (km²), it’s a negligible number expressed in scientific notation.
Common Mistakes: The Traps of “Square” Calculations
When working with area, people make the most mistakes with orders of magnitude. Why?
1. Linear vs. Square Conversion This is the biggest trick in school tests and practice.
- 1 meter has 100 centimeters.
- But 1 square meter DOES NOT have 100 square centimeters!
- 1 m² is a square of 100 cm × 100 cm = 10,000 cm².
- The difference is thus a hundredfold compared to intuition. Our converter handles this math for you and eliminates the risk of ordering 100 times fewer tiles than you need.
2. Are vs. Hectare In land registries, you often encounter the unit “are”.
- 1 hectare (ha) = 100 ares (a).
- If you have a garden of 15 ares, that means 1500 m². Our widget allows you to easily convert these historical, but still valid, units into understandable square meters.
Frequently Asked Questions (FAQ)
How large is 1 hectare (an idea)?
A hectare (ha) is a square with sides of 100 × 100 meters, thus 10,000 m². For a better idea: One hectare corresponds approximately to the area of one and a half football fields (a standard international field is approx. 0.7 ha).How to convert "Square Feet" (sq ft) to m²?
If you watch foreign housing shows or buy property abroad, you will see the area in "sq ft". The conversion is: 1 m² ≈ 10.76 sq ft. For a quick rough estimate, you can divide the sq ft value by ten (e.g., 1000 sq ft is approx. 100 m² - more precisely 92.9 m²). For an exact calculation, use our widget.What is an acre and how does it differ from a hectare?
An acre is a traditional Anglo-Saxon unit. It's often said to be the area a team of oxen could plow in one day. In today's numbers: 1 hectare ≈ 2.47 acres. If you have 10 acres of land, you have approximately 4 hectares.What does 1.00e-5 mean in the table?
If you convert a very small area (e.g., square millimeters) to a very large unit (e.g., ares), the result is a number with many zeros after the decimal point (0.00001). To fit the number on the screen, scientific notation is used.e-5 means you move the decimal point 5 places to the left.