Area Converter
Area Converter translates surface measurements through square metres. Supported choices are m², km², cm², ft², acre, and hectare. Because area has two dimensions, linear conversion factors must be squared; converting metres to feet and reusing that factor directly would be incorrect.
Runs locally — files stay on your deviceHow many square metres are in one hectare?
10,000 square metres.
Area factors grow as the square of length factors
If one length unit equals k of another, one square unit equals k². The tool uses 1 ft² = 0.09290304 m², 1 hectare = 10,000 m², and 1 acre = 4046.8564224 m².
How it works
Enter the area and select units. The value is multiplied by the source square-metre factor and divided by the target factor.
Key concepts
Square prefixes also square
1 km² is 1,000,000 m², not 1,000 m².
Area says nothing about shape
Equal area can have different dimensions and perimeters.
When to use it
- Compare property areas.
- Convert floor-plan surface values.
- Translate hectares, acres, and square metric units.
When not to use it
- Do not use a length converter for square units.
- Do not infer usable floor space from land area.
- Do not substitute acres for jurisdiction-specific historical units.
Worked examples
Hectare
- Input
1 hectare- Expected output
10,000 m²
Hecto-area convention yields a 100 m by 100 m square.
Square kilometre
- Input
1 km²- Expected output
1,000,000 m²
1000² = 1,000,000.
Acre
- Input
1 acre- Expected output
4046.8564224 m²
The stored international factor is applied.
Common mistakes
Multiplying by a linear factor once
Area is two-dimensional. Correction: Use squared conversion factors.
Reading km² as thousand m²
The prefix is squared with the unit. Correction: Use one million square metres.
Assuming area gives dimensions
Many shapes share an area. Correction: Keep length and geometry information separately.
Best practices
- Write the squared symbol.
- Preserve appropriate survey precision.
- Confirm the legal land-unit definition when formal records matter.
Related operations and differences
Length Converter
Choose Length Converter when you need to convert metric and imperial length units.; use Area Converter specifically for convert.
Weight Converter
Choose Weight Converter when you need to convert kilograms, pounds, ounces and more.; use Area Converter specifically for convert.
Data Storage Converter
Choose Data Storage Converter when you need to convert decimal and binary storage units.; use Area Converter specifically for convert.
Energy Converter
Choose Energy Converter when you need to convert joules, calories and watt-hours.; use Area Converter specifically for convert.
Fuel Economy Converter
Choose Fuel Economy Converter when you need to convert MPG, L/100 km and km/L.; use Area Converter specifically for convert.
Power Converter
Choose Power Converter when you need to convert watts, kilowatts and horsepower.; use Area Converter specifically for convert.
Limitations and privacy
- No square inches, square yards, or regional land units.
- No shape or perimeter calculation.
- Does not model survey uncertainty.
Values are converted locally in this browser and are not uploaded.
Frequently asked questions
How many m² are in 1 km²?
1,000,000.
How many m² are in a hectare?
10,000.
Is an acre metric?
No.
Does area conversion preserve shape?
It converts only the numeric area.