Marks Calc

Convert Area Units Instantly

Convert between square feet, acres, square meters, hectares, and Indian land units (bigha, katha, cent). Visual comparisons with football fields and courts.

How It Works

1 acre = 43,560 sq ft = 4,046.86 sq m

Area conversion uses fixed ratios between units. All conversions go through square meters as the base unit. Indian land units like bigha and katha vary by state — our calculator uses commonly accepted averages.

Quick Tips

Acre Size
1 acre ≈ 43,560 sq ft ≈ 4,047 sq m ≈ 0.4 hectares. About the size of a football field.
Indian Units
1 bigha ≈ 1,338 sq m (varies by state). 1 katha ≈ 126 sq m. 1 cent ≈ 40.47 sq m.
Hectare
1 hectare = 10,000 sq m ≈ 2.47 acres. Standard metric unit for land area.
Square Feet
1 sq ft = 0.0929 sq m. The most common unit for apartments in India.

Step-by-Step Instructions

  1. 1Enter the area value you want to convert.
  2. 2Select the source unit (From).
  3. 3Select the target unit (To).
  4. 4Click Convert to see the result and all unit equivalents.

Frequently Asked Questions

How many square feet in an acre?
1 acre = 43,560 square feet. To convert acres to sq ft, multiply by 43,560. To convert sq ft to acres, divide by 43,560.
What is a bigha?
A bigha is a traditional Indian land measurement unit. Its size varies by state: in UP/Bihar, 1 bigha ≈ 1,338 sq m. In Rajasthan, it can be 1,618-2,529 sq m. Our calculator uses the most common average.
How many acres in a hectare?
1 hectare = 2.471 acres. Hectares are the standard metric unit for land area worldwide, while acres are commonly used in the US, UK, and India.