CalcBoard / All Unit Converters / Area

Area Converter

Acres, hectares, square metres, square feet, and more — for land, floor plans, and paint coverage.

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Area conversions trip people up because the factors are squared. A metre is about 3.28 feet, so it is tempting to assume a square metre is about 3.28 square feet. It is not — it is 3.28 × 3.28, or roughly 10.76 square feet. Every factor in the table below already accounts for that.

The two land units worth memorising: an acre is 43,560 square feet (exactly 4046.8564224 m²), and a hectare is a clean 10,000 m², which makes it about 2.47 acres.

Area Converter

1 Acre = 0.40468564 Hectare
Converted in your browser. Nothing is sent anywhere.

This page’s converter uses ordinary JavaScript numbers, so long results round like any web calculator. CalcBoard’s in-app converter uses exact decimal arithmetic and works with no connection at all.

Common area conversions

Common area conversions for 1, 5 and 100 units
Conversion15100
Acre → Square foot435602178004356000
Hectare → Acre2.471053812.355269247.10538
Square meter → Square foot10.7639153.8195521076.391
Square foot → Square meter0.092903040.46451529.290304
Square mile → Square kilometer2.589988112.949941258.99881
Square kilometer → Acre247.105381235.526924710.538

Every area unit CalcBoard converts

All 9 units in this category, with the exact factor each one uses to reach the base unit (square meter). These are the same constants the app computes with.

Every area unit with its conversion factor and tier
UnitIn square metersTier
Square meter1Premium
Square kilometer1000000Premium
Square centimeter0.0001Premium
Hectare10000Premium
Acre4046.8564224Premium
Square foot0.09290304Premium
Square yard0.83612736Premium
Square mile2589988.11034Premium
Square inch0.00064516Premium

Convert without a browser

This page needs a connection. The CalcBoard app does the same conversions offline, with exact decimal arithmetic, and puts the converter next to a working calculator — so you can convert a measurement in one panel and immediately use it in a formula in the next, without copying anything by hand.

Free vs. Premium, honestly: the free app includes 2 panels, basic mode, 3 converter categories, and your last 10 history entries — no ads, no time limits. A one-time $2.99 purchase (no subscription) unlocks scientific and programmer modes, up to 8 panels, the shared value tray, all 10 converter categories, full history with search and CSV export, and all themes and button styles.

Frequently Asked Questions

How many square feet are in an acre?
Exactly 43,560 square feet, which is 4046.8564224 square metres. An American football field, excluding the end zones, is very close to 1.1 acres.
How big is a hectare compared with an acre?
A hectare is 10,000 square metres, or about 2.4710538 acres. Put the other way, an acre is about 0.4047 hectares.
Why can't I just use the length factor twice?
You can — that is exactly what a squared factor is. One foot is 0.3048 m, so one square foot is 0.3048² = 0.09290304 m². The mistake is applying the length factor once instead of twice.

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