A knot is one nautical mile per hour.
Knots to Millimeter per Minutes Converter — kn to mm/min
Convert Knots (kn) to Millimeter per Minutes (mm/min) using the exact conversion factor (1 knots = 30,866.66667 millimeter per minutes). See the formula, worked examples, conversion table, history, and common uses.
Knots to Millimeter per Minutes converter
Converter
Speed Converter
Convert road, aviation, marine, lab, and scientific speed units.
Context values
Some unit families need one extra value for a physically accurate result.
Distance divided by time.
Result = input x 0.5144444444 / 1.66666667e-5.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Knots to Millimeter per Minutes
Knots and Millimeter per Minutes both describe speed, and the conversion matters whenever a maritime or aviation speed (knots) needs to be compared against a road speed (mph). Knots is most often used for ship and boat speed in marine navigation.
Formula
millimeter per minutes = knots × 30866.6666667
This factor comes from each unit's defined relationship to the category's base unit: 1 knots equals 0.514444444444 base units, and 1 millimeter per minutes equals 0.0000166666666667 base units, so dividing one by the other gives the direct knots-to-millimeter per minutes factor of 30866.6666667.
Simple example
1 kn × 30866.66667 = 30,866.66667 mm/min
1 knots = 30,866.66667 millimeter per minutes.
Real-world example
10 kn × 30866.66667 = 308,666.6667 mm/min
10 knots = 308,666.6667 millimeter per minutes.
Conversion table
| Knots (kn) | Millimeter per Minutes (mm/min) |
|---|---|
| 1 kn | 30,866.66667 mm/min |
| 5 kn | 154,333.3333 mm/min |
| 10 kn | 308,666.6667 mm/min |
| 25 kn | 771,666.6667 mm/min |
| 50 kn | 1,543,333.333 mm/min |
| 100 kn | 3,086,666.667 mm/min |
Reverse conversion: Millimeter per Minutes to Knots
1 mm/min × 0.00003239740821 = 0.0000323974 kn
1 millimeter per minutes = 0.0000323974 knots.
knots = millimeter per minutes × 0.0000323974082073
For a page dedicated to this direction, see Millimeter per Minutes to Knots.
Understanding the Knots
Knots (kn) measures speed. A knot is one nautical mile per hour; since the nautical mile is exactly 1,852 meters, a knot is exactly 1,852/3,600 m/s. It is classified as a Non-SI unit accepted for use with SI (maritime/aviation).
Where it's used: Used internationally in maritime navigation and aviation
Uses of the Knots today
- Ship and boat speed in marine navigation
- Aircraft airspeed and wind speed reporting in aviation
- Marine weather forecasts (wind speed)
History of the Knots
The knot gets its name from an old nautical method of measuring speed: sailors trailed a 'log line' with evenly spaced knots behind a ship and counted how many knots paid out over a fixed time, giving a direct speed reading in 'knots.'
The nautical mile it's based on was itself standardized internationally in 1929 (the International Nautical Mile, 1,852 m exactly), tying the knot to a precise value still used in shipping and aviation today.
Historical origin. Knots was not the invention of a single named person; it developed through the process described above.
Understanding the Millimeter per Minutes (mm/min)
Distance divided by time.
Knots — sources
- BIPM SI Brochure — Non-SI units accepted for use with SI — Lists the knot among accepted non-SI speed units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many millimeter per minutes are in 1 knots?
1 knots equals 30,866.66667 millimeter per minutes, using the exact defined conversion factor rather than an estimate.
How do I convert knots to millimeter per minutes?
Multiply the knots value by 30866.66667. The converter above does this instantly to whatever precision you set.
How do I convert millimeter per minutes back to knots?
Use the reverse factor: 1 millimeter per minutes equals 0.0000323974 knots. You can also use the swap control in the converter above to flip the direction instantly.
What is a knots?
Knots (kn) measures speed. A knot is one nautical mile per hour; since the nautical mile is exactly 1,852 meters, a knot is exactly 1,852/3,600 m/s. It is classified as a Non-SI unit accepted for use with SI (maritime/aviation).
What is a millimeter per minutes?
Millimeter per Minutes (mm/min) is a unit of speed.
Is the knots to millimeter per minutes conversion exact?
Yes. A knot is one nautical mile per hour; since the nautical mile is exactly 1,852 meters, a knot is exactly 1,852/3,600 m/s. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Where is the knots still used today?
Used internationally in maritime navigation and aviation