Area Converter — Acres, Hectares, Cent, Bigha & Guntha

This tool is a full area converter, not only a regional land calculator. Convert acres to square feet (1 ac = 43,560 ft²), hectares to acres (1 ha = 2.471 ac), square meters to hectares, square kilometers to acres, and square inches or square miles for US real estate and surveying. Every value normalizes through square metres.

Use the same dropdown for international and local units — pick Acre, Hectare, Square Foot, or Square Kilometer alongside bigha and guntha when comparing a farm listing to a metric environmental report.

Property records across India, Pakistan, and parts of South Asia still list area in traditional units — bigha, biswa, guntha (gunta), marla, kanal, katha, and kottah — rather than square metres alone. A single plot might appear on one document in bigha, on a bank form in acres, and on a survey map in square feet. Without a reliable land units converter, buyers and sellers misread totals, especially when each state defines bigha differently.

This tool normalizes every value through square metres first, then displays equivalents in the units you select. That approach mirrors how revenue departments think: find the canonical area, then express it in local terms. Whether you need bigha into square feet for a deed summary or hectares to square metres for an agricultural report, the math stays consistent because the base unit never changes.

All calculations run in your browser. Plot sizes and registry numbers are never uploaded — useful when reviewing sensitive purchase documents on a shared computer.

Bigha is the most searched traditional unit, but it is not nationally standardized. In Uttar Pradesh and Bihar, one bigha is commonly taken as about 2,529 m² — roughly 0.625 acre. Gujarat uses a smaller bigha near 1,619 m², while Bengal's measure is closer to 1,338 m². Always confirm which bigha your document references before completing an acre to bigha conversion or the reverse.

For the standard UP/Bihar bigha, 1 acre to bigha equals approximately 1.6 bigha (one acre ÷ 0.625). The conversion of bigha into acre is simply the reciprocal: multiply bigha by 0.625 to get acres. When someone asks how much 1 bigha in square feet is, the UP figure is about 27,225 sq ft — a number that often appears in village sale agreements.

Bigha also subdivides. In many northern records, 1 bigha in guntha is 20 guntha, and biswa to bigha follows a 20-biswa-per-bigha pattern in UP (each biswa ≈ 126 m²). Select the labelled state variant in the dropdown before converting so your output matches local registry practice.

Guntha (often written gunta) is a fractional acre unit widely used in Maharashtra, Karnataka, and parts of Deccan India. One guntha equals 1/40 of an acre, or about 101.17 m². That fixed relationship makes guntha to sq ft straightforward: approximately 1,089 square feet per guntha. People searching 1 gunta into square feet or gunta into square feet are usually working backward from sale listings that quote plot width in feet but area in gunta.

Because 40 guntha fill one acre, conversion of guntas to acres divides the guntha count by 40. An acre to gunta conversion multiplies acres by 40 — so 2.5 acres equals 100 guntha. For metric paperwork, 1 guntha to square meter is about 101.2 m²; enter guntha as the source unit and square meters as the target to verify survey sketches.

Related fractional units include the cent (common in South India, Kerala, Tamil Nadu, Karnataka — 1/100 acre) and dismil (used in Odisha and eastern states, also 1/100 acre). Both are available in the dropdown alongside guntha. One acre equals 100 cents or 100 dismil, so acre cent conversion and acres to cents conversion scale linearly by multiplying or dividing by 100.

In Punjab, Haryana, and Pakistan, marla and kanal dominate residential plots. One standard marla equals 272.25 square feet (25.29 m²). A kanal is 20 marla, or 5,445 sq ft. Queries like 10 marla into gaj convert through square yards: since one gaj (square yard) is 9 sq ft, ten marla ≈ 2,722.5 sq ft ≈ 302.5 gaj.

1 kanal into gaj is therefore about 605 gaj (5,445 ÷ 9). Katha appears in Bihar and Bengal records; in Bihar one katha often matches one biswa (~126 m²), giving 1 katha to square feet near 1,361 sq ft. For 1 bigha into katha, UP practice often counts 20 katha per bigha when katha equals biswa.

Gaj, gaz, and gajam refer to the same square-yard measure. Bigha into gaj for a UP bigha lands near 3,025 gaj (27,225 sq ft ÷ 9). Biswa into gaj or biswa to gaj yields roughly 151 gaj per biswa in that system. Kottah (katha in Bangladesh) and acre to kottah conversions depend on local katha size — verify against your deed before signing.

Modern farm subsidies, FAO reports, and government schemes increasingly quote hectares. One hectare is exactly 10,000 m² — equivalent to 2.471 acres. For UP bigha, 1 hectare into bigha is about 3.95 bigha, and hectare into bigha in Gujarat uses the smaller divisor (~6.18 bigha per hectare). The bigha to hectare conversion for UP is near 0.253 hectare per bigha — the figure behind searches for 1 bigha into hectare and conversion of bigha to hectare.

Hectare to biswa in UP divides 10,000 m² by ~126 m² per biswa, giving roughly 79 biswa per hectare (exact value depends on biswa definition). Hectare to dismil often maps through acres: one hectare ≈ 2.471 acres ≈ 247 dismil where dismil equals 1/100 acre. Hectares to square metres is a fixed ×10,000 multiplier — no regional variation.

When converting acres to square feet, multiply by 43,560. That constant underpins every guntha and cent calculation because they are defined as acre fractions. Bigha into square meter for UP is simply 2,529 m² — useful when comparing a traditional deed to a RERA disclosure in metric units.

Start by identifying the unit printed on the sale deed or patwari extract. Select that unit in the "From" dropdown — state-specific bigha labels are grouped under India. Enter the quoted area, then choose the unit your bank, builder, or legal counsel requires: acres for legacy English documents, square feet for US-style floor plans, or hectares for subsidy forms.

Cross-check suspicious listings with two independent paths. Example: a seller claims 5 bigha (UP). Convert to acres (≈3.125 ac) and separately to guntha (≈100 guntha). If their sub-plot sketch only adds to 80 guntha, the listing may use a different bigha standard or exclude road set-back area.

The all-unit grid below the main result shows every equivalent at once — handy when a lawyer asks for marla while the seller quoted katha. Copy any value with one click for email or spreadsheet paste.

Mixing state bigha definitions is the most frequent error. A Gujarat bigha plot is not smaller because the soil is poor — the unit itself is smaller. Likewise, confusing marla with guntha causes order-of-magnitude errors: one guntha is about four marla in area, not interchangeable labels.

Another trap is treating gaj as a linear yard. Gaj here means square yard (area). 1 biswa in feet is sometimes misread as a length; biswa is an area unit (~1,361 sq ft in UP), not a side length. For linear dimensions, measure length and width separately, multiply to get area, then convert area units.

Fractional units stack: 1 killa into bigha references the killa (often ~1 acre in Punjab colloquial usage) — confirm local definition. 1 gajam in cents ties two different regional systems; convert both to square feet or m² before comparing.

The table below summarizes the most requested equivalences using the UP/Bihar bigha and standard marla/guntha definitions built into this tool. Substitute Gujarat or Bengal bigha from the dropdown when your document specifies those regions.

• 1 bigha (UP) ≈ 0.625 acre ≈ 20 guntha ≈ 27,225 sq ft ≈ 2,529 m²
• 1 acre ≈ 1.6 bigha (UP) ≈ 40 guntha ≈ 43,560 sq ft
• 1 hectare ≈ 3.95 bigha (UP) ≈ 10,000 m² ≈ 2.471 acres
• 1 guntha ≈ 1,089 sq ft ≈ 101.2 m² ≈ 0.025 acre
• 1 marla = 272.25 sq ft ≈ 30.25 gaj (sq yd)
• 1 kanal = 20 marla ≈ 5,445 sq ft ≈ 605 gaj
• 1 cent = 435.6 sq ft ≈ 40.47 m² = 1/100 acre
• 1 biswa (UP) ≈ 126 m² ≈ 1,361 sq ft ≈ 151 gaj