29 free GIS tools✅ Free🔓 No Sign-up🌐 Browser-based🔒 Files Stay Local

Free Online GIS Mapping Tools

Browser-based Geographic Information System (GIS) tools — process, analyze, and visualize spatial data entirely within a web browser.

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Terrain Map Tools

6 tools

Map Elevation Finder

Find the elevation of any location on Earth. Click the map or search by address to get accurate altitude data from SRTM90m.

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elevationaltitudeterrain

Slope and Gradient Calculator

Free slope and gradient calculator: draw a path or click two points on the map, and get the grade in percent, degrees and a ratio, an elevation profile chart, and a PDF report.

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slope calculatorgradient calculatorpercent grade calculator

Elevation Profile Viewer

Place up to 5 points on the map and get an interactive elevation chart of the route, with total ascent and descent, highest and lowest point, grades, a share link and a PDF report.

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elevation profileelevation chartterrain profile

Contour Map Generator

Click any place and get contour lines in a 1 to 5 km² square at the interval you choose, with labelled index contours, terrain figures, GeoJSON, KML and DXF downloads and a PDF report.

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contour map generatorcontour linestopographic map maker

Contours to DEM Converter

Upload contour lines as GeoJSON, KML, Shapefile or DXF and turn them into a DEM by TIN or IDW, with a hillshade preview, GeoTIFF, ASCII grid and PNG heightmap downloads and a PDF report.

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contours to demcontour to dem converterdem from contours

Slope Map Generator

Click any place and see the land in a 1 to 5 km² square coloured by steepness, in 4 classes or the 7 FAO classes, with the share of each class, GeoTIFF, PNG and CSV downloads and a PDF report.

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slope mapslope map generatorslope analysis

Location-Based Map Tools

6 tools

Postal Code Finder

Find the postal code or ZIP code of any location worldwide. Click the map or use your current GPS position.

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postcodepostal codeZIP code

GPS Coordinates Finder

Find your exact GPS coordinates from your device location or by clicking the map. View Decimal Degrees, DMS, and DDM formats, then share via WhatsApp.

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gps coordinateslatitude longitudemy location

EV Charging Stations Finder

Find the nearest electric car charging stations on the map. View up to 10 EV chargers within 25 miles of any location.

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EVelectric carcharging stations

World Time Zone Map

Find the time zone for any location. Click the world map to get the timezone name, GMT offset, and current local time.

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timezonetime zoneGMT offset

Sunrise and Sunset Calculator

Sunrise and sunset times, golden hour, blue hour, twilight and day length for any place and date, with the directions of sunrise and sunset on the map.

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sunrisesunsetgolden hour

GIS Data Viewers

5 tools

GPX File Viewer Online

Upload and view GPX files on an interactive map with an elevation profile chart. Free online GPX track reader.

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GPXGPS trackelevation profile

Shapefile Viewer Online

Upload and view ESRI Shapefile (.shp / .zip) on an interactive map with an attribute table. Free online SHP reader.

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shapefileSHPGIS

KML / KMZ File Viewer

Upload and render KML or KMZ files on an interactive map. View Google Earth files online without any software.

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KMLKMZGoogle Earth

True Size of Countries

Compare the true geographic size of any country by dragging it across the world map. Reveals Mercator projection distortion.

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true sizecountry comparisonMercator

GIS Data Converters

1 tool

GPX to GeoJSON Converter

Convert GPX files to GeoJSON format online for free. Preview your GPS track on the map then download the converted file.

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GPXGeoJSONconvert

Free Area Map Tools

3 tools

Area Calculator on Map

Draw a polygon on the map and instantly calculate its area in m², km², acres, or hectares. No sign-up required.

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areapolygoncalculator

Free Distance Map Tools

2 tools

Halfway Point Calculator

Find the halfway point between two locations by straight line or by road, with cafés and public places to meet, Google Maps directions and WhatsApp sharing.

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halfway pointmidpointmeeting point

Solar & Energy Tools

4 tools

Solar Panel Tilt Angle Calculator

Find the best angle for solar panels at your location. Get the optimal tilt angle for summer, winter and the whole year, the best panel direction, a monthly analysis table and a PDF report.

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solar panel tilt anglePV angle calculatoroptimal tilt angle

Roof Solar Calculator

Free roof solar calculator app: search an address, draw your roof, and get how many solar panels fit, the roof space used, the system size in kW, yearly and monthly output for summer and winter, a solar expert review and a PDF report.

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free roof solar calculatorsolar calculator by addresshow many solar panels on my roof

Solar Panel Energy Calculator by Location

Click any place on the map or search an address and get the kWh a solar system makes per year, month and day, the kWh per kWp, the peak sun hours, a tilt and direction heat map, a solar expert review and a PDF report.

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solar panel energy calculator by locationsolar kwh calculatorpeak sun hours by location

Solar Panel Output Calculator

Enter your panels and pick a place to get the real kWh per panel, per day and per year after temperature, reflection, inverter and clipping losses, with a loss chart, the daily power curve, a technology and inverter comparison, the output over 25 years and a PDF report.

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solar panel output calculatorpv output calculatorsolar panel temperature loss

GeoData Downloads

0 tools
🇬🇧United Kingdom

UK County Boundaries

View and download UK ceremonial county boundary data as GeoJSON or KML. Interactive map with all 48 counties.

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UKcountiesboundaries

Why Use Maplity?

Built for GIS professionals, field workers, and everyday map users.

⚡

Instant Access

Open any tool in seconds — no install, no loading screens, no account.

🔒

Your Files Stay Private

GPX, SHP, KML, and photo processing is 100% client-side. Files never leave your device.

📱

Works Everywhere

Desktop, tablet, and mobile. Any screen size. Any modern browser.

🆓

Always Free

All 29 tools are free. No paywalls, no freemium limits, no expiry.

Free GIS Mapping Tools, Right in Your Browser

Maplity is a collection of 29 free, browser-based Geographic Information System (GIS) tools for working with maps and spatial data. Every tool runs entirely client-side — there is no software to install, no account to create, and no file upload to a remote server. You open a tool, do the work, and close the tab.

The toolkit covers the tasks that come up most often in everyday mapping work: finding the elevation of a point, measuring distance and area, converting between GPX, KML, and Shapefile formats, plotting latitude/longitude coordinates, locating EV chargers, reading GPS metadata from photos, and looking up postal codes or UK administrative boundaries. Each tool is purpose-built for one job rather than bundled into a general-purpose GIS suite, so there is no learning curve — you can typically get an answer within seconds of opening the page.

What Is GIS Mapping?

A Geographic Information System (GIS) captures, stores, and analyzes data tied to a location on Earth. In practice, that means working with formats like GPX (GPS tracks), KML (Google Earth placemarks and paths), and Shapefiles (the standard format for administrative boundaries and survey data), and being able to answer spatial questions — how far apart are two points, what is the elevation at this coordinate, what area does this polygon cover, or which local authority does this address fall within. GIS tools traditionally required desktop software such as QGIS or ArcGIS; Maplity brings the most common of those operations directly into a web browser.

Who Uses These Tools?

  • Surveyors and field workers — quick elevation and coordinate lookups without a laptop.
  • Hikers and outdoor planners — checking a route's elevation profile or converting a GPX track.
  • Developers and analysts — converting between GPX, KML, and GeoJSON for use in other software.
  • Researchers and students — exploring UK administrative boundary data and demographics.
  • EV drivers — finding nearby charging stations before a trip.

Why Browser-Based Tools Matter

Because processing happens on your own device, files like GPX tracks, Shapefiles, or photos with embedded GPS metadata are never transmitted to a server for the core conversion or calculation logic. That keeps the tools fast — there is no upload wait — and keeps sensitive location data under your control. It also means the tools work the same way on a desktop, tablet, or phone, since all that is required is a modern web browser.

Maplity — 29 Free Online GIS & Mapping Tools