RubanTools

Free Real Estate & Property Tools

16 curated tools for property professionals - area converters, stamp duty, home loan EMI, Vastu and land-unit tools.

Area Converter

Convert sq ft, sq m, acre, hectare, ground, cent, bigha, kanal, marla and 5 more area units.

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Sq Ft to Sq M

Instantly convert square feet to square metres and back. 1 sq ft = 0.0929 sq m.

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Ground to Sq Ft

Convert ground to square feet for Tamil Nadu land transactions. 1 ground = 2,400 sq ft.

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Cent to Sq Ft

Convert cent to square feet for Kerala and Tamil Nadu land areas. 1 cent = 435.6 sq ft.

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Bigha to Acre

Convert bigha to acres for North Indian land records. 1 bigha (UP/Rajasthan) = 0.625 acres.

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Kanal to Marla

Convert kanal to marla for Punjab and Haryana land. 1 kanal = 20 marlas = 5,445 sq ft.

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Acre to Hectare

Convert acres to hectares and back. 1 acre = 0.404686 ha. Used in agriculture and government records.

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Home Loan Calculator

Compute home loan EMI with down payment, processing fee and prepayment simulation - see how much interest you save.

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Stamp Duty Calculator

Calculate property stamp duty and registration charges for 14 major Indian states with female buyer concessions.

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EMI Calculator

Calculate monthly EMI, total interest and full amortisation schedule for any loan with reducing-balance formula.

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Vastu Compass

Live compass using device orientation sensor with 16-direction Vastu zone readings and remedies.

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Vastu Main Door

Check the Vastu rating for your main entrance direction - auspicious vs inauspicious with remedies.

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Vastu Plot

Assess your plot shape (square, rectangle, L-shape, triangular etc.) and entrance direction for Vastu compliance.

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Direction Finder

Simple live direction finder for 8 cardinal Vastu directions using device sensor.

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Vastu Remedies

Interactive Vastu defect checklist - select your doshas and get specific remedies without demolition.

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Pincode Finder

Find post office, district and state from any Indian 6-digit pincode, or search by area name. Live data from India Post.

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Real Estate Tools Property and Area Calculators

India's real estate sector is one of the largest contributors to the national economy, accounting for approximately 7.3% of GDP as of 2023 and expected to reach $1 trillion by 2030. Property transactions in India involve a complex web of area measurements, registration charges, stamp duties, and financing calculations that vary by state and city. This collection of real estate tools simplifies the calculations needed by property buyers, sellers, agents, and investors across India.

Indian Land Measurement Units

India uses a diverse set of area units that vary by region. Square feet and square metres are standard in urban apartments. Acres and guntas are used in agricultural land across Andhra Pradesh, Telangana, and Karnataka. Cents (1/100th of an acre) are common in Tamil Nadu and Kerala. Ground (2,400 sq ft) is specific to Tamil Nadu. Bigha varies in size across Uttar Pradesh, Bihar, Rajasthan, and West Bengal. Converting between these units accurately is essential for legal documentation, sale agreements, and RERA compliance filings.

Stamp Duty, EMI, and Vastu Compliance

Stamp duty on property registration ranges from 4% to 8% of the circle rate depending on the state - Maharashtra charges 5%, Karnataka 5.6%, and Tamil Nadu 7%. The home loan EMI calculator helps buyers assess affordability before approaching banks. Vastu compliance tools help buyers evaluate a property's directional alignment. All tools in this hub are free, require no account, and run entirely in the browser.

Real Estate Tools FAQ

1 square foot = 0.09290304 square metres exactly (by international definition). To convert, multiply the area in square feet by 0.0929. For example, a 1,200 sq ft apartment = 1,200 × 0.0929 = 111.48 sq m. Our Sq Ft to Sq M converter handles both directions instantly - enter either value and get the result in real time. It also shows the equivalent in other common units such as acres, hectares and square yards so you can cross-check across listing portals and government documents.

Stamp duty rates in India vary by state and range from 3% to 8% of the property's market value or agreement value, whichever is higher. For example: Maharashtra charges 6% (5% stamp duty + 1% local body tax), Karnataka charges 5.6% for properties above ₹45 lakh, Tamil Nadu charges 7% and Delhi charges 6%. Many states offer a 1–2% concession for female buyers. Registration charges are additional, typically 1% of the property value. Our stamp duty calculator covers 14 major Indian states with all current rates, female-buyer concessions and registration charges in one place.

Home loan EMI is calculated using the reducing-balance formula: EMI = P × r × (1+r)^n ÷ ((1+r)^n − 1), where P is the principal loan amount, r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the total number of monthly instalments (tenure in years × 12). For example, a ₹50 lakh loan at 8.5% p.a. for 20 years gives an EMI of approximately ₹43,391 and total interest of about ₹54.1 lakh. Our home loan calculator also shows the full amortisation schedule, prepayment savings simulation and a comparison across different tenures and interest rates.

In Tamil Nadu, 1 Ground = 2,400 square feet exactly. This is the standard measurement used in Chennai and other Tamil Nadu cities for residential plot transactions. The ground is not an SI unit and is specific to South India, predominantly used in Tamil Nadu and parts of Andhra Pradesh. Other useful conversions: 1 Ground = 222.97 sq m = 266.67 sq yd. For agricultural land, Tamil Nadu uses 'cent' (1 cent = 435.6 sq ft; 100 cents = 1 acre). Our Ground to Sq Ft converter also handles cent, acre, hectare and square metre conversions for complete property area reference.