Equal to 500 meters, one kilometer equals 1000 meters mile = 1.60931 kilometers mile: A unit of length equal to 5,280 feet or 1,760 yards (1.609 kilometers). According to our country’s regulations, 1 nautical mile is equal to 1.852 kilometers, and 1 nautical mile is equal to 1.852 kilometers. However, this regulation does not apply to all parts of the world. The length of the nautical mile is not fixed, and different countries also use different sizes. In the following article, we get to know about 250 km to miles? So donâ€™t skip the article from anywhere and read it carefully because itâ€™s going to be very useful for you guys.

This is because: on the sea, the l-minute arc length of the earth’s meridian is specified as 1 nautical mile (that is, 1 degree of latitude corresponds to The size of the longitude). But because the planet is not a standard sphere, the arc length of the meridian is different at different latitudes. This produces the longest and shortest nautical mile. The fastest nautical mile is at the equator Above, l nautical mile = 1843 meters. The longest nautical mile is at the north and south poles. 1 nautical mile = 1862 meters. In addition, the old “sea mile” was written as “li,” which has been abolished.

**What is a knot?**

Â At sea, the speed of 1 nautical mile per hour is called 1 “Knot.” Kn (kn) is used to measure the speed of the ship by the crew. For every nautical mile the team walked, the staff would make a knot on the lowered rope and then use the knot as the unit of ship speed 250 km to miles. One knot (kn) = 1 nautical mile /Hour=(1852/3600)m/s is the speed unit 1 nautical mile (n mile)=1852m is the length unit 1 knot is equal to 1 nautical mile per hour, that is, 1.852 kilometers (km) per hour for land vehicles and air For aircraft and river ships.

The speed measurement unit is mostly kilometers (km)/hour, while the speed unit of sea ships (including warships) is called a “knot.” As early as the 16th century, maritime navigation was quite developed, but at that time, there was no clock and no voyage recorder, so it was difficult to determine the speed of the ship. However, a clever sailor came up with a magic method. He threw a floating body with ropes to the sea while the ship was sailing, and then based on a certain amount of time. The length of the string pulled out was used to measure the speed of the boat. At that time, the time was still using a quicksand timer.

**Why is kn used?**

Â To calculate the ship’s speed more accurately, sometimes the released rope was very long, so many knots were tied at the same distance between the strings. The speed measuring rope is divided into several sections. As long as the number of knots pulled by the rope in the same unit time is measured, the corresponding speed will naturally be measured. Therefore, “knot” has become the unit of measurement for the ship’s speed.

Correspondingly, the speed measurement unit of underwater weapons such as seawater velocity, sea wind speed, torpedoes, etc., is also commonly used internationally as “knot.” The code name of “knot” is the prefix of “Knot” in English, and it is represented by “Kn.” 1 knot equals per hour 1 nautical mile, which is 1.852 kilometers (km) per hour 250 km to miles. The unit for measuring short distances on the sea is “chain.” One chain is equal to 1/10 nautical mile. The code name is the prefix of “Cable” in English. Use “Cab.”

**Earth’s Meridian**

The nautical mile is the unit of length at sea. It originally refers to 1 minute of latitude on the earth’s meridian. Because the planet is slightly ellipsoidal, the arc of 1 minute at different spaces is somewhat different. One nautical mile on the equator is about 1843 meters; at 45Â° latitude is about 1852.2 meters, and the poles are about 1861.6 meters. 1929 International The Hydrographic Conference approved using an average length of 1,852 meters as 1 nautical mile.

The 1948 International Conference on Human Life Safety recognized that 1852 meters or 6076.115 feet are 1 nautical mile, so 1852 meters is adopted as the standard nautical mile internationally. China recognizes this A standard, represented by the code “M ”. In addition, the length unit of the mark for the manufacture. And the use of chain sections on ships is also “knot”. The “line-throwing knot” has long been history, but the “knot”. Is still used as the speed unit of sea-going ships. Edit entry.

**How many miles is one kilometer, how many meters is one mile, what other units of length are there**

One kilometer is equal to 2 miles, one mile is equal to 500 meters. And there are units of length such as decimeters, centimeters, millimeters, and kilometers.

**(1) Decimetre** (English name decimetre, dm) is one of the metric units of length, and 1 decimeter is equivalent to one-tenth of 1 meter. Ten centimeters are equal to one decimeter, and ten centimeters are similar to one meter.

**(2) Centimeters** is a length measurement unit equal to one-hundredth of a meter. The team of length, the English symbol is abbreviated as cm.

**(3) Millimeter,** also known as millimeter (or millimeter), is a unit of length and a team of rainfall, the English abbreviation mm.

**(4) Kilometer, **also known as a kilometer, is a unit of length, usually used to measure the distance between two places. It is an international standard length measurement unit, symbol km 250 km to miles.

**Extended information:**

Since the implementation of the measurement reform in the Republic of China in 1929. One li refers explicitly to one city, formerly known as one huali. Used to calculate distance and geographic distance. Such as milestones (marks placed on the side of the road to calculate mileage). As a unit of measurement, li originated from the well-field system in ancient China. After the well-field system was abolished, it evolved from a team of areas to a unit of length.

One city = 500 meters, one kilometer = 1000 meters. One mile â‰ˆ 1609.344 meters, and one nautical mile â‰ˆ 1852 meters (meters).