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About this tool
Convert kilometers to nautical miles instantly. Free, bidirectional, and fully in-browser.
1 kilometer equals 0.5399568035 nautical miles — enter any kilometer value to convert it to nautical miles instantly. This Kilometer to Nautical mile converter is a client-side tool: it applies a single multiplication (nmi = km × 0.5399568035) in your browser, updates the moment you type, and works in both directions — edit either field, or press swap, to convert nautical miles back to kilometers. A reference table lists common kilometer values already converted, and nothing you enter is sent to a server.
Open Kilometer to Nautical mile Converter on AltFTool — it loads instantly in your browser.
Type the value you want to convert into the Kilometer field.
Read the equivalent in nautical miles in the result field, and copy it if needed.
Use the decimal-places slider for more or less precision, or press swap to convert nautical miles to kilometers.
The result updates as you type, and the swap button flips the conversion to nautical mile → kilometer without reloading.
The conversion uses the precise factor (nmi = km × 0.5399568035), so the number matches a manual calculation to the decimal places you choose.
A slider sets 0–10 decimal places, and very small or very large results switch to scientific notation instead of rounding to zero.
Everything runs locally in your browser — no upload, no account, no limit on conversions.
One kilometer is 0.5399568035 nautical miles. Multiply the kilometer value by 0.5399568035 to convert. For example, 10 km = 5.399568035 nmi.
nmi = km × 0.5399568035. This tool applies it automatically and shows a worked example: 10 km = 5.399568035 nmi.
Yes. Press the swap button, or type into the nautical mile field, and the tool converts nautical miles to kilometers using the inverse of the same relationship.
It uses the standard distance and length definition (nmi = km × 0.5399568035), not a rounded approximation, so results are exact to the number of decimal places you select.
Yes. The converter is a browser-side script with no network calls: your values are never uploaded, and once the page has loaded it keeps working without a connection.
Add the Kilometer to Nautical mile Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
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