100% Offline ยท Zero Data Collection

Smart Construction & Plot Estimation Made Effortless

Calculate Marla and Kanal conversions, estimate bricks, cement, sand, aggregate, and reinforcement steel, compare contractor quotes, and generate professional Bill of Quantities (BOQ) PDF reports right on your Android phone.

Constructor Estimator App Screenshot
100%
Offline Architecture (No Internet Needed)
225 / 272
Customizable Marla Standard Sizes
1-Tap
Instant BOQ PDF Export & Sharing
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Personal Data Collected or Shared

Built For Homeowners, Contractors & Engineers

From buying raw land to putting on the final coat of paint, Constructor Estimator provides tools for every phase of construction.

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Plot & Land Calculator

Convert between Marla, Kanal, Square Feet, and Square Yards with precision. Switch between 225 sq ft (commercial standard) and 272.25 sq ft (revenue standard) or specify custom plot dimensions.

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Plot Purchase & Transfer Costs

Calculate land acquisition costs including registry charges, mutation fee, stamp duty, legal expenses, and miscellaneous transfer costs before signing agreements.

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Brickwork & Mortar Estimator

Accurately calculate number of standard bricks required with wastage allowances, cement bags, and sand in cubic feet for 4.5" partition walls and 9" load-bearing walls.

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Concrete & Foundation Volumes

Compute dry and wet volume requirements for footings, slabs, beams, and columns across standard mix ratios (1:2:4, 1:1.5:3, 1:3:6) with exact bags of cement, sand, and bajri.

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Steel Reinforcement Calculator

Estimate steel rebar weight in kilograms and metric tons using standard imperial or metric formulas (#3 through #8 bar gauges) for slabs, beams, and column cages.

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Side-by-Side Contractor Quotes

Compare two contractor bids item-by-item: grey structure rates, covered area totals, and finishing allowances to detect discrepancies and overcharging.

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Tiles & Paint Quantities

Determine floor and wall tile boxes needed (including cutting wastage) and calculate paint buckets needed for primer, base coats, and weather-shield coatings.

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Official BOQ PDF Export

Generate a comprehensive Bill of Quantities (BOQ) with a breakdown of material costs, labour charges, and sub-totals, ready to share via WhatsApp, email, or print.

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Custom City Market Rates

Edit local rates for cement bags, brick prices, steel per kg, sand per cft, and labour per sq ft anytime to keep all estimates 100% current to your local market.

Designed For Fast, Clear Results

Clean visual dashboards, bilingual support (English & Urdu), and instant calculations with zero lag.

Constructor Estimator Splash Screen
Constructor Estimator Tools Screen
Constructor Estimator Workflow
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Zero Data Collection. 100% Device-Level Privacy.

Constructor Estimator does not require accounts, logins, or internet access. We do not track your location, your projects, or your device. Everything you enter stays strictly on your device.

Read Privacy Policy →

Frequently Asked Questions

Everything you need to know about Constructor Estimator and our privacy principles.

Is Constructor Estimator free to use?
Yes, Constructor Estimator provides core plot conversion, material calculation, and quote comparison tools for free without requiring any account sign-up.
Does Constructor Estimator work completely offline?
Yes! Constructor Estimator runs 100% offline. No internet connection is needed to calculate plot areas, foundation concrete, brick counts, or steel tonnage.
Can I customize the material rates for my city or region?
Yes. Inside Settings > Edit Rates, you can change the prices for cement bags, bricks, sand, aggregate, steel rebar, tiles, paint, and labour per square foot to match your specific city market.
How does the app handle different Marla sizes?
You can toggle seamlessly between 225 sq ft (commonly used in housing societies like Bahria and modern urban developments) and 272.25 sq ft (traditional government revenue record standard), or input a custom square footage per Marla.
How do I delete all my stored projects and data?
Go to Settings > Data & Storage Management > tap "Delete All Data". This immediately wipes all local project files, saved rates, and preferences from your device. You can also view our Data Deletion Guide.
Who develops Constructor Estimator and how do I get support?
Constructor Estimator is developed and maintained by Orbit Tech Lab. For inquiries, technical support, or feedback, email us at support@orbittechlab.com.

Ready to Estimate Your Next Build?

Download Constructor Estimator today for fast, offline, and reliable construction budgeting.

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