Area Converter
MeasurementFree online area converter. Convert between square metres, square feet, acres, hectares, and Indian land units including guntha, marla, kanal, and cent.
| Square Millimetres (mm²) | 92903.04 |
| Square Centimetres (cm²) | 929.0304 |
| Square Metres (m²) | 0.09290304 |
| Square Kilometres (km²) | 9.2903e-8 |
| Hectares (ha) | 0.000009290304 |
| Square Inches (in²) | 144 |
| Square Feet (ft²) | 1 |
| Square Yards (yd²) | 0.11111111 |
| Acres | 0.000022956841 |
| Square Miles (mi²) | 3.5870e-8 |
| Guntha | 0.00091827365 |
| Cent | 0.0022956844 |
| Marla | 0.003673095 |
| Kanal | 0.00018365475 |
What is a Area?
An area converter translates measurements of surface area between different unit systems — instantly and with the precision that property decisions demand. Whether you are comparing listings that mix square feet with square metres, calculating agricultural land in hectares versus acres, or decoding a land record using regional Indian units like guntha, marla, or cent, the area converter removes the calculation burden and eliminates costly conversion errors.
Area measurement is unusually fragmented globally, and India reflects this complexity internally. A flat may be listed at 1,200 sq ft by the builder, registered in square metres under RERA, and located on land measured in cents or gunthas in the municipal records. The area converter covers all three systems — metric (mm², cm², m², km², hectare), imperial (in², ft², yd², acre, mi²), and Indian traditional (guntha, marla, kanal, cent) — in a single tool.
If you are also working with linear dimensions — room lengths, wall widths, plot frontages — the Length Converter handles those. For agricultural and commodity work where land area and produce weight interact, the Weight & Mass Converter covers units like quintal and maund.
Understanding area conversions is particularly critical in Indian real estate after RERA. The Act requires builders to quote carpet area in square metres, yet most buyer conversations still happen in square feet. A 2 BHK flat of 1,050 sq ft sounds very different from 97.55 m² — they are the same flat. This converter makes that equivalence visible and navigable.
How to use this Area calculator
- Enter the area value in the FROM field. Decimals work: 2.5 acres, 0.8 hectares.
- Select the FROM unit from the dropdown. Units are grouped as Metric, Imperial, and Indian.
- Select the TO unit for your target measurement.
- Read the result instantly in the TO field. The reference table below updates simultaneously.
- Type in the TO field to reverse-convert — enter the target amount and the FROM field back-calculates.
- Swap — the ⇅ button reverses FROM and TO without clearing the entered value.
Formula & Methodology
All area conversions use square metres (m²) as the base unit. Each unit has a fixed conversion factor representing its equivalent in square metres: Conversion formula: Result = Input × (F_from ÷ F_to) Where F_from is the m² equivalent of the source unit and F_to is the m² equivalent of the target unit. Key conversion factors: - 1 ft² = 0.09290304 m² - 1 acre = 4,046.8564 m² - 1 hectare = 10,000 m² - 1 km² = 1,000,000 m² - 1 guntha = 1,089 ft² = 101.17 m² - 1 cent = 435.6 ft² = 40.47 m² - 1 marla = 272.25 ft² = 25.29 m² - 1 kanal = 20 marla = 5,445 ft² = 505.86 m² Worked example — RERA carpet area declaration: A builder advertises a flat as 1,450 sq ft. To convert to square metres for RERA compliance: Result = 1,450 × (0.09290304 ÷ 1) = 134.71 m² Note that RERA carpet area excludes wall thickness and common areas. The advertised super built-up area of 1,450 sq ft will correspond to a lower RERA carpet area — typically 70–80% of the total — so always verify the specific figure in the builder's RERA registration document.