3bigha Calculator

Land & Building Area Calculator

Calculate rectangular, triangular, circular, trapezium and irregular plot or roof area in square feet and square meter first, then convert land area into Indian regional units.

State & District Wise Land Unit Converter

Convert sqft, sqm, acre, hectare, decimal and local units like katha, bigha, dhur, biswa etc. using the selected state/district practice.

Universal sqft basis

State / UTDistrict / Local PracticeValueFrom UnitTo Unit

Converted Result

0.001389

Katha

1 Square Feet = 1 sqft

1 Katha = 720 sqft

Showing conversion for West Bengal · All districts / local practice. Regional units vary by state, district and local practice. For registry, mutation, deed or legal work, verify with local land/revenue office.

Shape / Measurement Type

Measure length and breadth

Used for rectangular land, rooms, floor slabs, shops, roof areas and regular building layouts.

Formula

Area = Length × Breadth

Practical Example

Example: Length = 40 ft and Breadth = 30 ft → Area = 1200 sqft

Best Use

Best for square or rectangular plots, house rooms, floors and regular property layouts.

For legal land records, verify final measurement with local survey or registry office.

LengthBreadthInput Unit

State / Union TerritoryDistrict / City / Local Practice

Important: For irregular land, this is a practical estimate. Final property registration, boundary disputes and legal agreements should be verified with local survey or revenue records.

Use this for L-shaped plots, split lands, multiple rooms, roof sections or courtyard houses.

Universal Area

Use these values first for property, construction, finance and legal discussion.

Square Feet

1,200 sqft

Square Meter

111.48 sqm

Acre

0.02755

Hectare

0.01115

Property & Land Guidance

Contextual operational guidance based on area, location and usage pattern.

West Bengal · All districts / local practice

• Suitable for compact 2BHK planning or small residential construction.

• West Bengal registry commonly uses decimal and boundary schedule descriptions.

• Verify mutation, LR-RS records and access road before final transaction.

• Always verify land dimensions physically before registry or final payment.

These are practical operational suggestions, not legal advice. Final verification should be done through architect, engineer, surveyor, registry office or local authority where applicable.

Use This Area for Next Work

Continue from this calculated area into construction planning, material requirement or property listing.

1,200 sqft

Estimate Construction Cost Generate Material Requirement / RFQ Create Property Listing from This Area

This keeps the workflow simple: calculate area first, then move to cost, materials, RFQ or listing when ready.

Construction Intelligence

Simple material and budget guidance from this calculated area.

1,200 sqft planned area

Building Type

Rural House

1 floor(s) · standard

Budget Range

₹17.56 L – ₹22.53 L

indicative only

Bricks / Blocks

~39,216

Cement

~289 bags

TMT Steel

~3.72 MT

Sand

~568 cft

Aggregate

~433 cft

Approx timeline: 6–9 months. Final quantity depends on soil, foundation, structural drawing, wall thickness, material quality, room layout, labour availability and local rates.

Detailed Cost Estimate Create Material RFQ Find Contractor

This is practical planning guidance, not a final BOQ. Final estimate should be checked by an engineer, architect or experienced contractor.

Regional Land Conversion · West Bengal · All districts / local practice

Using safe static fallback dataUniversal sqft/sqm first · regional units second

These are local-practice conversions from the universal square feet value.

Land units may vary by district, block, mouza, registry office and local practice. Verify before legal use.

Decimal

2.75482

1 Decimal = 435.6 sqft

Katha

1.66667

1 Katha = 720 sqft

Bigha

0.08333

1 Bigha = 14,400 sqft

Next Action After Measurement

Use this calculated area for construction estimate, material planning, vendor RFQ, finance discussion or property comparison.

Estimate Construction Cost

Use the area for house, roof, floor or project cost calculation.

Create RFQ from Area

Ask contractors, masons or material vendors for quotes.

Finance Assistance

Use measured land/building size for loan or project finance discussion.

Land Measurement FAQ

Why show square feet first?

Square feet and square meter are universal. Local units like katha, bigha, kanal, marla or guntha vary by region, so universal area is shown first.

Why does katha or bigha vary?

Indian land units often depend on state, district, mouza, registry office and local practice. Always verify before legal use.

When should I use Average Rectangle?

Use it when opposite sides of a rectangular-looking land are not equal. The calculator averages both lengths and both breadths.

When should I use Polygon?

Use polygon measurement for irregular plots where you can mark multiple corner points from a sketch, map or field measurement.