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Area Converter

Convert square meters, feet, acres, hectares, bigha, tsubo, ping and pyeong across 14 metric, Anglo-American and traditional land units, using factors that are exact by definition.

Last revised 29 September 2026

By Team GlobalCalqulate · About our editorial standards

Area Conversion

Value

Enter the area value to convert.

From Unit

Select the unit you want to convert from.

To Unit

Select the unit you want to convert to.

Decimal Places

Number of decimal places for the result (max 15).

Disclaimer: This converter uses exact, internationally defined conversion factors for metric and imperial units, but results are for general reference only. For land and property transactions, use the survey figures on your title deed or official land records — and note that traditional regional units like the bigha have no fixed international standard, so always confirm the local definition before relying on a converted value. Full disclaimer.

Sources & methodology

Formula:: Two-step conversion through a base unit
Reference:: Bureau International des Poids et Mesures (BIPM)
Content last updated:: September 2026
Scheduled re-verification:: September 2027

Calculation type: Exact calculation. Figures are taken from Bureau International des Poids et Mesures (BIPM) and National Institute of Standards and Technology (NIST) — see sources below.

Formula & methodology

Formula used

Two-step conversion through a base unit

value_out = (value_in × factor_in→the square metre) ÷ factor_out→the square metre

Every area unit is defined as a multiple of the square metre. A conversion goes in to the square metre and back out again, so one factor per unit covers every possible pair rather than needing a factor for each combination.

Squared length units

1 ft² = 0.3048² m² = 0.09290304 m²

Area factors are the square of the corresponding length factor, which keeps them exact.

Variable definitions

Symbol	Meaning	Unit
factor	Conversion factor. how many square metres one unit represents	m²

Step-by-step calculation

1. Choose the unit you have
The value is converted to square metres first.
2. Choose the unit you want
Square metres are converted out to the target unit.

Limitations

The conversion factors are exact by definition, not measured, so the only error in a result is the rounding you choose for display.
Land units vary by country. The acre and hectare are standard, but units such as the bigha or the cent differ by region and are not universal — check which local definition applies before relying on a converted figure.
Rounding is applied to the displayed figure only; the conversion itself runs at full floating-point precision. Chaining many rounded conversions by hand will drift, but a single conversion here will not.

This page is educational. It converts between units using the defined or standard factors shown above, so the arithmetic is exact to the precision displayed — but a converted value is only as good as the measurement behind it, and some units are defined only under stated conditions. Where a conversion is safety-critical or contractual, check it against the governing standard rather than relying on this page.

Sources & references

The International System of Units (SI Brochure, 9th edition) — Bureau International des Poids et Mesures (BIPM)
NIST Special Publication 811: Guide for the Use of the International System of Units — Appendix B.6, exact conversion factors — National Institute of Standards and Technology (NIST)

Verified against internationally recognized measurement standards (BIPM SI Brochure, NIST, and other applicable standards); see the sources above for the specific documents used. Every factor on this page is exact by definition rather than an empirical measurement, except where the page says otherwise — so results are limited only by the display rounding you choose. Standards review: August 2026. The bigha is a customary unit with no standardized size; each variant offered here is named for its region.

Help & FAQs

Frequently Asked Questions

Clear answers to common questions to help you use this calculator confidently.

How many square feet are in 1 square meter?

Tap to view the answer

1 square meter (m²) = 10.7639 square feet. To convert m² to ft², multiply by 10.7639. Example: 100 m² × 10.7639 = 1,076.39 ft².

How do I convert square feet to square meters?

Tap to view the answer

Divide the area in square feet by 10.7639. Example: 1,000 ft² ÷ 10.7639 = 92.903 m².

How many hectares are in an acre?

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1 acre = 0.404686 hectares, and 1 hectare = 2.47105 acres. An acre is an imperial unit (43,560 ft²) used mainly in the US and UK; a hectare (10,000 m²) is used globally for land and agriculture.

What is a bigha and how is it converted?

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Bigha is a customary South Asian land unit with no standardized size — it's set by regional practice and land-revenue records, and real values range from about 1,338 m² to about 2,529 m². This tool offers three named variants: pucca (3025 yd² = 2,529.29 m², common in Uttar Pradesh, Bihar and Rajasthan), West Bengal (1600 yd² = 1,337.80 m²), and Gujarat (1936 yd² = 1,618.74 m²). Confirm the definition used in your district before relying on a figure for a transaction.

How accurate is this area converter?

Tap to view the answer

Metric and imperial conversions use exact, internationally defined factors, so results are precise to the decimal places you choose. Traditional regional units like bigha, tsubo, and ping vary by local usage — for legal land documents, always confirm with official records or a licensed surveyor.

Need more help? Contact support or email globalcalqulate@gmail.com

We typically reply within 24–48 hours.

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All converters

From	To	Conversion
1 m²	10.764 sq ft	10.764
1 sq ft	0.0929 m²	0.0929
1 acre	43,560 sq ft	43560
1 acre	4,047 m²	4047
1 hectare	2.471 acres	2.471
1 hectare	10,000 m²	10000
1 km²	0.3861 sq miles	0.3861
1 sq mile	2.590 km²	2.590
1 sq mile	640 acres	640
1 sq yard	9 sq ft	9
1 sq inch	6.452 cm²	6.452

From	To	Conversion
1 m²	10.764 sq ft	10.764
1 sq ft	0.0929 m²	0.0929
1 acre	43,560 sq ft	43560
1 acre	4,047 m²	4047
1 hectare	2.471 acres	2.471
1 hectare	10,000 m²	10000
1 km²	0.3861 sq miles	0.3861
1 sq mile	2.590 km²	2.590
1 sq mile	640 acres	640
1 sq yard	9 sq ft	9
1 sq inch	6.452 cm²	6.452

Calculator inputs

Area Conversion

Your results

Sources & methodology

Formula & methodology

Formula used

Two-step conversion through a base unit

Squared length units

Variable definitions

Step-by-step calculation

Limitations

Sources & references

How many square feet are in 1 square meter?

How do I convert square feet to square meters?

How many hectares are in an acre?

What is a bigha and how is it converted?

How accurate is this area converter?

Related calculators

More converters

Calculator inputs

Area Conversion

Your results

Sources & methodology

How to Use This Calculator

Example: Convert 100 m² to Square Feet

Common Area Conversions

Understanding Your Results

Key Tips

Understanding Area Units

What is Area?

Metric vs Imperial

Traditional Units

Applications

Formula & methodology

Formula used

Two-step conversion through a base unit

Squared length units

Variable definitions

Step-by-step calculation

Limitations

Sources & references

How to Use This Calculator

Example: Convert 100 m² to Square Feet

Common Area Conversions

Understanding Your Results

Key Tips

Understanding Area Units

What is Area?

Metric vs Imperial

Traditional Units

Applications