Topos: World Land & Area Calc
The complete toolkit for global land measurements. Convert 150+ international units, measure GPS map perimeters, calculate irregular shapes, and perform advanced area calculations instantly.
Get it on Google PlayEverything You Need. In One App.
150+ Global & Local Units
Convert seamlessly between standard formats (Acres, Hectares, Sq Ft) and highly localized regional units like Bigha, Guntha, Pyeong, Dunam, and Rai.
GPS Map Perimeters
Drop pins directly on a satellite map or physically walk the perimeter of your land to instantly calculate the exact spherical area and boundary distances.
Irregular Shapes & Polygons
Real land isn't always a perfect square. Easily calculate the exact area of complex, irregular shapes including triangles, trapezoids, and uneven quadrilaterals.
Financial & Pricing Suite
Built-in tools for property valuation. Calculate total land value based on unit price, compute broker commission splits, and generate Mortgage/EMI amortization schedules.
Multi-Unit Grid
Why convert one by one? Input a single measurement and instantly view its equivalent value across 10 different global units simultaneously on one screen.
Property Compass
Built-in directional tracking for precise architectural alignment, land surveying orientation, or Vastu / Feng Shui property checks.
Export & Share
Generate professional PDF quotations, CSV statistical reports, and KML map data boundaries to easily share properties with clients, teams, or local registries.
100% Offline & Localized
Built for the field, Topos works entirely offline with no cloud tracking. Deeply localized in English, Spanish, French, Arabic, Hindi, Portuguese, Japanese, and Chinese.
Who Uses Topos Land & Area Calculator?
Topos is designed to be the ultimate offline land measurement tool for a wide variety of professionals, hobbyists, and academics. Whether you are dealing with complex real estate valuations or simple gardening plots, our robust calculation engine adapts to your needs.
👨🌾 Farmers & Agricultural Workers
Calculate exact seed and fertilizer requirements by measuring your field's perimeter via GPS. Use local units like Bigha, Guntha, or Hectares instantly without an internet connection.
🏢 Real Estate Brokers & Agents
Provide instant land valuation to clients. Convert localized land records into standard square feet or meters on the spot. Calculate broker commission splits and generate professional PDF quotations in seconds.
📐 Land Scientists & Surveyors
Perform advanced geographic calculations using spherical geometry. Measure irregular plots of land—from uneven quadrilaterals to complex polygons—and verify exact topographical boundaries.
🎓 Students & Colleges
A perfect academic companion for civil engineering, architecture, and geography students. Visually interact with 150+ international measurement units and understand deep geometrical calculations.
🏡 Casual Users & Hobbyists
Planning a new garden, checking Vastu/Feng Shui property alignment using the built-in compass, or verifying the square footage of a new apartment? Topos makes complex land math accessible to everyone.
Frequently Asked Questions
Does Topos work completely offline?
Yes! Topos is built with a privacy-first, 100% offline architecture. All calculations, conversions, and compass features work instantly without an internet connection. The only feature requiring internet is the live Map view, but basic GPS tracking can still function with cached data.
Can I measure land by walking around the property?
Absolutely. Using our GPS perimeter tool, you can simply walk the boundary of your land. Topos will drop precise GPS pins and automatically calculate the total enclosed area and perimeter length in your preferred units.
Are regional units like Bigha and Guntha accurate?
Yes. We have deeply researched and integrated the exact official conversion metrics for regional units across India, Nepal, Bangladesh, and the Middle East, ensuring professional-grade accuracy for real estate brokers and farmers.
How do I calculate the area of an irregular plot of land?
Topos includes a dedicated Irregular Shape Calculator. Simply divide your plot into triangles (Heron's formula) or use our advanced quadrilateral solver by inputting the lengths of the four sides and a diagonal, and the app will instantly give you the exact area.
Can I generate quotation reports for clients?
Yes, our Pro version allows real estate agents and surveyors to export their calculations directly to beautiful PDF reports, making it easy to share valuations and measurements with clients instantly.