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Gas / Fuel Cost Calculator
Estimate fuel cost for a trip from distance, fuel economy and gas price, in mpg or L/100 km.
Distance Calculator
Calculate the straight-line (great-circle) distance between two places from their latitude and longitude.
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How to use this calculator
Enter your values. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.
Haversine formula
a = sin²(Δφ/2) + cos φ₁ · cos φ₂ · sin²(Δλ/2)
d = 2R · asin(√a), R ≈ 6,371 km
φ is latitude and λ longitude, in radians. Example: New York (40.7128, −74.0060) to London (51.5074, −0.1278) ≈ 5,570 km. Find coordinates by right-clicking a spot in most map apps.
Frequently asked questions
Is this the driving distance?
No, it’s the straight-line distance over the Earth’s surface.
About this tool
- Written by
- [Author: to be assigned]
- Reviewed by
- Formula tests passed · human review pending
- Last updated
- 31 Oct 2026
See our methodology and editorial policy. Think something’s off? Report an error with this tool.
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