With HashDash, transform coordinates, polygon geometries, and geohashes between formats in a click—fast, reliable, and user-friendly
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Upload File
Drop your CSV or TXT file here
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Drop your geohash file here or click to browse
Supports .txt (plain text) and .csv (comma-separated values) files
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Manual Input
Paste geohash codes directly
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Coordinate Input
Convert coordinates to polygon geohashes
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Draw Polygon
Search location and draw polygon directly
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GeoJSON Polygon Input
Extract geohashes from polygon area
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Drop your GeoJSON file here or click to browse
Supports .geojson and .json files with Polygon or MultiPolygon features
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Configuration Options
Choose output format and settings
*Multiple files: Creates one GeoJSON file per geohash
*Grouped files: Only available for CSV input with group column
*CSV files: Contains geohash, lat, lng, and all properties data
(1-9, higher = more precise)
*Expands each input geohash to all its children at the target level.
📊 CSV Column Configuration
CSV Preview (first 3 rows):
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Actions
Convert or reset your data
📊 Geohash Distribution Map
Visual representation of your geohash areas and boundaries
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Total Geohashes
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Valid Geohashes
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Invalid Geohashes
Processing...
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Download Results
Your converted files are ready
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Tool Created by Deira R. Nadila
Geohash List
About Geohashes
Instruction Manual
About HashDash & Geohashes
🌍 What is a Geohash?
A geohash is a geocoding system that represents geographic coordinates (latitude and longitude) as a short string of letters and numbers. Think of it as a "postal code" for any location on Earth!
🎯 Why Geohashes Are Amazing:
Space-Saving: Transform bulky coordinates "1.3521, 103.8198" into elegant codes "w21z74c" - perfect for databases and APIs
Smart Precision: Want bigger areas? Use shorter codes. Need pinpoint accuracy? Use longer codes. It's like zooming in and out!
Location Intelligence: Codes starting with the same letters are neighbors - making geographic queries lightning fast
Global Standard: One system that works from Singapore to San Francisco, from the Arctic to Antarctica
🔧 How HashDash Helps:
Convert Coordinates: Turn lat/lng pairs into geohashes
Polygon Coverage: Generate complete geohash coverage for any area
Multiple Formats: Export as GeoJSON, CSV, or ZIP files
Batch Processing: Handle thousands of geohashes at once
Map Visualization: See your data plotted on an interactive map
💡 Common Use Cases:
Location-based services and apps
Spatial data analysis and research
Geographic indexing systems
Delivery and logistics optimization
IoT and sensor data management
🚀 Choose Your Precision Level:
HashDash offers precision levels 1-9 - pick the perfect resolution for your needs:
Level 1: ~5,000km coverage → Perfect for continent-wide analysis
Level 2: ~1,250km coverage → Great for country or large region studies
Level 3: ~150km coverage → Ideal for city-scale projects
Level 4: ~40km coverage → Perfect for metro areas and districts
Level 5: ~5km coverage → Great for neighborhood mapping
Level 6: ~1km coverage → Excellent for detailed local areas
Level 7: ~150m coverage → Precise enough for individual buildings
Level 8: ~38m coverage → High precision for small plots
Level 9: ~4.8m coverage → Pinpoint accuracy for specific spots
💡 Tip: Higher numbers = smaller areas = more precision!
Instruction Manual
📝 Basic Usage
Follow these simple steps to get your geohashes:
1. Input Data: Upload a CSV file, paste a GeoJSON, or manually enter coordinates on the left panel.
2. Configure Settings: Select your desired Output Type (Geohash List or Polygon) and set the Precision level (1-9) depending on your needs.
3. Convert: Click the main Convert button to process your data.
🗺️ Using the Drawing Map
Generate geohashes for a specific drawn area:
1. Draw Shape: Use the polygon or rectangle tools on the right map to draw an area of interest.
2. Adjust Precision: Set the precision slider to determine the size of the geohash grids.
3. Convert Area: Click "Convert Drawn Polygon" below the map to fill the area with geohashes.
📥 Outputs
After processing, you can download the results or copy them directly:
View & Copy: A quick popup allows you to view and copy the raw geohash list directly to your clipboard.
GeoJSON: Perfect for web maps and spatial analysis tools.
CSV: Standard tabular format for spreadsheets and databases.
Shapefile: Used for traditional GIS software (QGIS, ArcGIS).