Straight Line Distance Calculator
Calculate Air Miles & As-The-Crow-Flies Distances in Bulk
Need to know the straight-line distance between two locations? Paste your address pairs and get accurate as-the-crow-flies distances in seconds. Perfect for coverage area analysis, radius mapping, and distance estimation.
Built for logistics professionals, insurance companies, real estate agents, and anyone who needs quick, accurate straight-line distances between locations.
No credit card required
Features
Everything you need to get the job done
Batch Processing
Calculate up to 100 origin-destination pairs at once. Paste from a spreadsheet or import a CSV/Excel file.
Precise Haversine Formula
Uses the mathematically proven haversine formula for accurate great-circle distance calculations on Earth's surface.
Miles or Kilometers
Switch between miles and kilometers with one click. Results update instantly for either unit system.
CSV Export with Coordinates
Export results including geocoded lat/lng coordinates to CSV for use in Excel, Google Sheets, or mapping software.
Your API Key, Your Control
Use your own Google Maps API key for geocoding. You control costs and keep your data private.
Flexible Input
Enter full addresses, ZIP codes, city names, or any location Google Maps can recognize.
Benefits
Why our customers love this tool
Save Hours Every Week
Replace manual lookups with batch processing. Calculate 100 straight-line distances in the time it takes to look up one.
Get Coordinates Too
Every calculation returns the geocoded coordinates for both origin and destination, useful for mapping and GIS workflows.
No Software to Install
Works right in your browser. No downloads, no plugins, no spreadsheet add-ons required.
Affordable for Small Teams
At $19.99/month, get unlimited calculations without enterprise-level pricing.
Everything You Need to Know
Built for professionals who need straight-line distance calculations
Who Is This For?
- Logistics & Shipping Companies - Estimate coverage areas and service zones
- Insurance Companies - Calculate proximity to coastlines, fire stations, or hazard zones
- Real Estate Professionals - Measure distances to schools, amenities, and landmarks
- Fleet Managers - Quick distance estimation for route planning
- Researchers & Analysts - Geospatial analysis requiring point-to-point distances
- Sales Teams - Determine territory coverage and travel distances
How It Works
- Enter Locations - Type or paste origin-destination pairs. Use addresses, ZIP codes, or city names.
- Geocoding - Each location is converted to precise latitude/longitude coordinates using Google's Geocoding API.
- Haversine Calculation - The straight-line distance is calculated using the haversine formula, which accounts for Earth's curvature.
- Results - View distances in miles or kilometers, along with the geocoded coordinates for each location.
- Export - Download results as CSV with all data including coordinates.
Straight Line vs. Driving Distance
Straight-line distance (also called "as the crow flies" or "air miles") is the shortest distance between two points on Earth's surface. It does not follow roads or account for terrain.
When to use straight-line distance:
- Coverage area and radius analysis
- Proximity calculations (nearest location, distance to a point of interest)
- Insurance and risk assessment (distance to coast, hazard zones)
- Quick estimation before detailed routing
- Geospatial analysis and research
Need actual road distances instead? Check out our Driving Distance Calculator.
Simple, Transparent Pricing
Start free, upgrade when you need more
Free
Perfect for occasional use
- 5 uses per day
- Up to 10 lines per use
- No credit card required
Monthly
Flexible monthly billing
per month
- Unlimited uses
- Unlimited lines per use
- Export to CSV/PDF
- Cancel anytime
Annual
Best value, billed yearly
per year
- Unlimited uses
- Unlimited lines per use
- Export to CSV/PDF
- Priority support
30-day money-back guarantee on all purchases
Jacques Boisclair
2 months ago
Excellent tool that has saved our logistics team countless hours. The accuracy is spot-on and the interface is intuitive.
Stephen Falbei
2 months ago
The tool works very well (and now there is a Mac version!). Saves so much time. Vinnie is not kidding about being responsive, with immediate direct communication throughout the process.
Amy Hansen
2 months ago
This is a great tool that is so helpful as we calculate our GHG emissions for Scope 3 categories. I also appreciate Vinnie's exceptional customer service. Thanks for all your help!
Michael Rodriguez
3 months ago
Game changer for our delivery routing. We've reduced fuel costs by 15% since implementing this tool. Highly recommend for any logistics operation.
Sarah Chen
3 months ago
Finally a tool that actually works as advertised. The batch processing feature is incredible - processed 500 addresses in seconds.
David Thompson
4 months ago
Outstanding accuracy and speed. Our fleet management has never been easier. Customer support is top-notch too.
Jennifer Martinez
4 months ago
We switched from a competitor and couldn't be happier. The Excel integration is seamless and the pricing is very fair.
Robert Kim
5 months ago
Perfect for our small shipping business. Easy to use, accurate results, and great value. Wish I found this sooner!
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Google Reviews
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Software company in Cottonwood Heights, Utah
Frequently Asked Questions
Straight-line distance (also called "as the crow flies" or "air miles") is the shortest distance between two points on Earth's surface, calculated using the haversine formula. Unlike driving distance, it does not follow roads or account for terrain.
The haversine formula calculates the great-circle distance between two points on a sphere given their latitude and longitude. It accounts for Earth's curvature, making it more accurate than simple Euclidean distance calculations for geographic coordinates.
You can enter full street addresses, ZIP codes, city names, city/state combinations, or any location that Google Maps can recognize. For best results, be as specific as possible.
The haversine formula is mathematically precise for great-circle distances. The accuracy depends on how precisely Google's geocoding places each location. For exact addresses, accuracy is typically within a few meters. For ZIP codes or city names, the distance is calculated from the geographic center.
Yes. Use the unit dropdown above the input field to switch between miles and kilometers before calculating. You can also re-run the same batch with a different unit.
We use a "Bring Your Own Key" (BYOK) model. Your API key is used to geocode addresses into coordinates. Google provides $200/month in free credits (approximately 40,000 geocoding requests). This keeps our tool affordable and gives you full control over your API usage.
The Straight Line Distance Calculator gives you the direct point-to-point distance (as the crow flies), while the Driving Distance Calculator gives you the actual road distance and estimated travel time. Use straight-line for coverage areas and proximity analysis; use driving distance for route planning and travel time estimation.
Yes. Click "Import CSV / Excel" to upload a .csv, .xlsx, or .xls file with two columns (Origin and Destination). You can also paste directly from Excel or Google Sheets using tab-separated values.
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