3007.7 nautical miles
5570.2 km / 3461.2 statute miles
Great circle distance (Haversine formula). Actual sea route may be longer due to land masses and shipping lanes.
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100 calls/day, no card, no spam. Built by one person, in public.
About Sea Distance
When you need this task done in seconds, Sea Distance delivers a clean, focused interface without the friction of a generic tool. The goal was to keep the path from "open the page" to "get the result" as short as possible. No mandatory account, no cookie wall, no upsell at every step. If you find yourself doing this regularly, the rest of the utility suite covers most adjacent tasks with the same approach.
When you'd reach for Sea Distance
You're on a public or shared machine and don't want to leave traces of what you're working on.
Travelers, contractors, anyone working from a friend's computer.
Nothing is uploaded, nothing persists if you're not signed in.
You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.
Marketers and ops people whose primary tool is metered.
Stay productive without burning credits.
You need to handle a one-off task right before a meeting and don't have time to install anything.
Anyone working remotely on a borrowed or restricted machine.
Open the page, get the result, paste it into your doc — under a minute.
You're cleaning up a folder of files that accumulated over a project and need to standardize them.
Designers, writers, and developers wrapping up deliverables.
Drop each file in, copy the output, move on.
Frequently asked about Sea Distance
- Will Sea Distance change my original file?
- Never. Sea Distance only reads your input file and produces a new output file.
- What browsers does Sea Distance support?
- Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.
- Are my files uploaded to a server when I use Sea Distance?
- Sea Distance processes everything in your browser using local APIs. Your files never leave your device.
- Is Sea Distance really free?
- Yes — Sea Distance is free for unlimited personal use, with no account required and no watermark on the output.
- Does Sea Distance work on mobile?
- Yes, Sea Distance is fully responsive and tested on iOS Safari and Android Chrome.