Area converter
Convert square units, acres and hectares.
Area converter
Your result appears here
Adjust the values to see your result automatically.
How to use Area converter
The Area converter changes a surface area from one unit to another and returns the result with your chosen precision. It handles square meters, square kilometers, square centimeters, square millimeters, hectares, acres, square feet, square inches and square miles. An acre is defined as 4,046.8564224 square meters, and output can use 1 to 15 significant digits.
- Adjust the values; an initial result is calculated from the defaults.
- Change the basic settings or open Advanced mode to fine-tune the result.
- Review and copy or download your result. Pause Live results to run manually. Sources or individual settings above 20,000 characters require an explicit run.
What this tool supports
Convert square units, acres and hectares.
- Value
- Set this value for your task.
- From
- m² · km² · cm² · mm² · hectare · acre · ft² · in² · mi²
- To
- m² · km² · cm² · mm² · hectare · acre · ft² · in² · mi²
- Significant digits
- Range: 1 to 15
- Number display
- Standard (grouped) · Plain (no grouping) · Scientific notation
Limits and processing
Use finite numbers, valid dates and the ranges shown by each control. Invalid values produce an error without a downloadable result.
Frequently asked questions
How many square feet are in an acre?
The converter defines an acre as 4,046.8564224 square meters and a square foot as 0.09290304 square meters. Dividing the two gives exactly 43,560 square feet per acre, which is the result you see when converting 1 acre to ft².
How many acres are in a hectare?
A hectare is 10,000 square meters. With an acre at 4,046.8564224 square meters, one hectare equals about 2.47105 acres. Raise the significant digits in the advanced settings if you need more decimal places for land records.
How do I convert square inches to square centimeters?
Choose in² as the From unit and cm² as the To unit. One square inch is 0.00064516 square meters, which is exactly 6.4516 square centimeters, because an inch is 2.54 centimeters and the factor is squared.
Where is my input processed?
This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.
What are the input limits?
Use finite numbers, valid dates and the ranges shown by each control. Invalid values produce an error without a downloadable result.