How many mph is one knot?

One knot equals about 1.150779 miles per hour, because a knot is one nautical mile (1852 m) per hour and a statute mile is 1609.344 m.

What is a knot used for?

Knots are the standard speed unit in marine and aviation navigation, where one knot equals one nautical mile per hour.

Is anything uploaded?

No — every conversion happens locally in your browser and nothing is sent to a server.

How do I convert mph back to knots?

Divide miles per hour by 1.150779 (or multiply by 0.868976). For example, 80 mph ÷ 1.150779 = 69.5 kn. Type into the mph field and the tool returns knots instantly.

How fast is 30 knots in mph?

30 knots equals about 34.52 mph (30 × 1.150779). A fast boat or strong gale at 30 knots is roughly 34.5 mph.

Why is a knot faster than a mile per hour?

A nautical mile (1852 m) is longer than a statute mile (1609.344 m), so covering one nautical mile per hour is faster than one statute mile per hour — about 1.15 times faster.

Knots to MPH Converter

Knots to mph converter

This tool converts speed between knots (kn) and miles per hour (mph) in both directions. A knot is one nautical mile per hour, the standard unit in shipping and aviation, while mph is the everyday road-speed unit in the US and UK. The converter makes it easy to read a vessel or wind speed in familiar terms.

How it works

It multiplies by the exact factor mph = knots × 1.150779. This comes from the two mile lengths: a nautical mile is 1852 metres and a statute mile is 1609.344 metres, so 1852 ÷ 1609.344 = 1.150779. To convert mph back to knots it divides by the same factor. Both fields are linked and update instantly as you type.

Example

A yacht is sailing at 25 knots. To find its speed in mph:

25 × 1.150779 = 28.77 mph

So 25 knots is about 28.8 mph. Everything runs in your browser — no data leaves your device.