Length conversion chart

 Table of Contents:

• Length conversion table
• Length conversion chart
• Inch definition
• Feet definition
• Meter definition
• Imperial US measurement system. US measurement system
• Metric measurement system

The length converter is an instrument that allows rapid transformation to length measurements that are imperial and metricunits, but it's not just that. It is equipped with 20 different measurements of length:

• An angstrom (A)
• Picometers (pm)
• Nanometers (nm)
• Micrometers (mm)
• millimeters (mm)
• centimeters (cm)
• decimeters (dm)
• meters (m)
• Centimeters and meters
• kilometers (km)

• millimeters of an inch (mil /thou)
• inches (in)
• feet (ft)
• inches and feet
• yards (yd)
• miles (mi)

• mile nautical (nmi)
• Sun radii (R)
• Light years (ly)
• Astronomical units (au)
• parsecs (pc)

The length conversion calculatorworks by entering units (up to 11 in the same calculation) into the tool. It then calculates the length converter then returns your results for every unit in real-time. Click on the name of the unit in case you wish to convert the length conversion to an alternative unit to the ones that are defaulted from Omni. Omni team. If you want to convert between different units of area, a different option we suggest is the

Length conversion table

To learn what conversion factors are for the nine most popular length units look up the following length conversion table:

millimeter (mm)	centimeter (cm)	Meter (m)	kilometer (km)	inch (in)	feet / foot (ft)	yard (yd)	mile (mi)	the nautical mile (nmi)
1 millimeter (mm)	1	0.1	0.001	0.000001	0.03937	0.003281	0.0010936	0.0000006214	0.00000054
One centimeter (cm)	10	1	0.01	0.00001	0.3937	0.03281	0.010936	0.000006214	0.0000054
1 Meter (m)	1000	100	1	0.001	39.37	3.281	1.0936	0.0006214	0.00054
1 kilometer (km)	1000000	100000	1000	1	39370	3281	1093.6	0.6214	0.54
1.25 inches (in)	25.4	2.54	0.0254	0.0000254	1	0.08333	0.02778	0.000015783	0.000013715
1 foot = feet (ft)	304.8	30.48	0.3048	0.0003048	12	1	0.33333	0.0001894	0.00016458
1 yard (yd)	914.4	91.44	0.9144	0.0009144	36	3	1	0.0005682	0.0004937
1 . Mile (mi)	1609344	160934	1609.3	1.6093	63360	5280	1760	1	0.869
1.25 nautical miles (nmi)	1852000	185200	1852	1.852	72913	6076	2025.4	1.1508	1

We've decided to round a few of the conversion coefficients to make them fit in the table. Therefore, certain numbers aren't exact however they have acceptable accuracy.

Length conversion chart

If you're wondering how to convert quickly between various units of one system take a look at these two easy length conversion charts:

1. System of measurement in metric

For instance:

• 6 km = 6 * 1000 = 6000 m
• 180 cm = 180 / 100 = 1.8 m

1. Imperial US measurement system. US measure system

For example:

• 5 yd = 5 * 3 = 15 ft
• 144 in = 144 / 12 = 12 ft

We've also decided to create a list of most frequently requested length conversions. The most popular ones you're looking for are:

1. meters to feet/ feet-to-meters

If you're thinking about how many feet can be in one meter, here's the answer:

• 1 Meter 3.281 feet which equals 3 feet and 3 3/4 inches
• 1 foot equals 0.3048 meters

1. cm to inches/ inches in cm

Find out the number of centimeters in an inch.

• One centimeter 0.3937 inches
• 1 inch equals 2.54 centimeters

1. feet to inches/ inches to feet

To convert between feet and inches make use of:

• 1 foot equals 12 inches
• 1" 0.08333 feet 1/12 of one foot

1. feet to yards/ yards to feet

How many feet are in the yard? Three!

• 1 yard = 3 feet
• 1 foot 0.3333 yards, 1/3 of one yard

1. feet to miles/ miles converted to feet

Have you ever thought about how many feet are in one mile?

• 1 foot 0.00018939 mile
• 1 yard = 5280 feet

Inch definition

The inch (abbreviate meaning "or ") can be described as a measurement unit of length in the Imperial or the US metric system. The measurement is derived from - according to some definitions, the size of the human thumb. In certain other languages e.g. Norwegian, Afrikaans, Italian or French the word "inch" is derived from the word thumb or, in certain cases it's the same term. The 14th century saw the word "inch" was specified by the King of England as three grains of barley, dry and round, laid from end to end, lengthwise. The definition of an inch changed through the centuries, but in the 1950's, an international standard was accepted, and, since then, the inch is exactly 2.54 centimeters.

1 in = 2.54 cm

One inch also equates 1/16 yard. one-half of a foot , or 1/63360 of one mile.

In a regular basis, inches are utilized in US, UK, Canada and many other countries that were once members of the British Empire. The length, height, and width can be measured in inches and various sizes are measured in units that are derived from inches (e.g. size of shoes).

What is measured in inches, not just in the US but all over the world?

• screen dimensions of monitors, smartphones TVs, and smartphones (specifically, those with diagonals on rectangular screen)
• resolution of the screen - PPI (pixels per inch)
• sizes of tires sizes e.g. bicycle or car wheels,
• various sizes of pipes and tools. sizes
• Certain sports equipment utilizes the numbers of inches e.g. to shoot archery
• in the field of science, e.g. Acoustics - microphones and the diameters of loudspeakers

International inch is the equivalent of: International inch is equal to:

• 10,000 10ths of a tenth
• 1,000 thou/mil
• 100 points or tears
• 72 PostScript points
• 6 computer picas
• 3 barleycorns
• 2.54 centimeters exactly
• 0.999998 US Survey inches
• 1/3 of or 0.333 palms
• 1/4, or 0.25 hands
• 1/12, or 0.08333 feet
• 1/36 or 0.02777 yards

Feet definition

Foot (abbreviate in the form of "ft" (or ') is one of the length units within an Imperial or US the metric system. It's a measurement that is based upon the body of a human, as well as its name suggests. The measurement became standardized in 1950s, and has since been equal to 0.3048 meters precisely:

1 ft = 0.3048 m = 304.8 mm

The usage of feet has been used since the beginning of time in many different cultures, however, the length of the foot varied between the various cultures. The foot was utilized, e.g. in:

• Ancient Rome: 1 foot = 11.6 inches (295.7 mm). This was a standard foot, however in certain provinces, it could be as high as 13.2 inches (334 millimeters)
• Greece: 1 foot equals 10.6-13.8 inches (270 - 350 millimeters)
• Indus cities in the Bronze Age: 1 foot equals 13.2 inches (333.5 millimeters)
• Egypt The equivalent of a foot is 12 inches (304.8 millimeters)

The official public imperial measurement standards, Greenwich

The foot measurement in England The measurement of feet also changed over the centuries. It started with Roman standards, and then Belgic Celts foot of 13.2 inches or Welsh foot was introduced and then gone. The definition of feet varied between regions, and city to city, and later the kings altered the measurement in accordance with their wishes - e.g., Henry I was believed to have ordered an entirely new standard that was based on his arm. In the following years, Edward II of England introduced an element of standardization, introducing the statute foot, which was 10/11 of the previous foot. The final agreement on foot's length was reached much later, in the year 1959, after it was the International yard-and-pound convention was signed. Since then yard length within the United States and countries in the British Commonwealth is equal to exactly 0.9144 meters. When yard was first defined as a foot, it could be determined as well. Therefore, it's equivalent to:

1 foot = (1/3) * yard = (1/3) * 0.9144 m = 0.3048 m

In the US there are two kinds of feet are utilized every day such as the international foot and the survey foot.

1. International footAlso called the standard foot as it was the standard foot that was established during the 50s. Widely used in a variety of applications, it's equivalent to 0.3048 millimeters: 1 international foot 0.3048 m in which we use the symbol to indicate that the fact that it's exactly this number. The international foot measure is equivalent to the human foot, which has 13 inches of shoe size (UK) (UK) or 14. (US male).
2. Survey foot It is the US survey foot is nearly identical in size to the foot of the world. However, the word nearly is the most important thing - the survey foot definition is precise 1200/3937 meters: 1 US survey foot = 1200/3937 m 0,30480060960121920243840487680975... m As you can see, it appears like a tiny difference that is a little bit different in the seventh decimal point! This is an increase of 0,609 millimeters 609 nmwhen comparing different types of feet to one that is different. What's the point? It's crucial because the difference is minimal when we are measuring relatively tiny objects, but increases significantly when we start measuring thousands of feet, such as when mapping or using the state plane coordinate systems (SPCS). Additionally, the law governing the foot of a survey differs between fifty states.
   • 24 states have enacted legislation that measures to survey the population be in line with US survey foot. US surveys foot
   • Eight states have agreed that the decision should be taken on the basis of an global foot
   • 18 states don't have a specific conversion rate for metric units. But don't fret If you require the conversion to conduct your daily property transactions or land surveys the difference is minimal for shorter distances (less than 1 mile) So it doesn't matter what definition you choose to use.
   There's a different measurement for feet that is the Indian survey foot . It's described as precisely 0.3047996 M: 1. Indian survey foot equals 0.3047996 meters

Feet - as well as the entire imperial system are utilized extensively throughout the US. It's almost exclusively there. It's true that the US is the sole industrialized nation in the world that hasn't yet accepted the International System of Units, which is also known as the system of metric measurement. Two other countries that use an imperial-based system include Liberia located in Africa as well as Myanmar (also called Burma) located in Southeast Asia. Canadians as well as the British employ a mixture of both systems, imperial and metric (e.g. the men's height is typically expressed in feet , but inches are also used).

Feet aren't widely used in the non-English-speaking world. The most obvious instance is to measure the altitude of international flights.

Meter definition

Meter (British English: metre) is the basic measurement of length in a number of measurement systems, such as those of the International System of Units (SI).

The definition of meter changed when the scientific methods of measuring evolved. It is now defined as how long the path taken by light in a vacuum within 1/99,792,458 seconds.

However, how was it described in the past?

• The first attempts to develop the definition of meter began in 1790. In 1790, the French National Assembly decided that the length of a brand new meters would be the same as that of the pendulum , with an interval of one second for the half-period. You can see the accuracy of this measurement using our pendulum calculator. Enter 2 in the pendulum's period box and you'll get the length of the pendulum. In fact, it's close to the one meters (0.993621 meters).

• In 1973 the circumference of the Earth was selected as a neutral reference point. The meters were defined as one-ten millionth of the distance from the Equator towards north pole. North Pole: 1 meter equals 1/10,000,000 of the quarter meridional circumference of Earth across the meridian of Earth through Paris
• 1799-1889 between 1799 and 1889, brass, platinum and the platinum alloy with 10% iridium meter bar were made, and still serve as an alloy with the length of Earth's meridian. In the 1st General Conference on Weights and Measures in 1889 established the meters as the distance between two parallel lines in a typical bar made of the latter kind of alloy. The International Prototype Meter is kept at the International Bureau of Weights and Measures located in Sevres close to Paris. The definition of meter was in effect until 1960 and also the 11th General Conference on Weights and Measures.
• Between 1960 and 1983, the meters were redefined in the year 1960. It was renamed as 1,650,763.73 wavelengths of the red-orange radiation of Krypton 86 under certain conditions.
• 17th Conference established that the term "meter" refers to 1/299,792,458 of how far light travels in a vacuum in a second the measurement is still in use up to the present.

The table below summarizes the timeline of a meter's definition (by Cardarelli, 2003).

Standard	Date	Absolute error	Relative uncertainty
One-tenth of the square that runs along the Meridian	1795	500-100 mm	10 -4
The first prototype of the platinum bar standard	1799	50-10 mm	10 -5
Bar of platinum-iridium at the melting point of the ice (1st CGPM)	1889	200-100 nm	10 -7
Platinum-iridium bar with melting point of the ice, atmospheric pressure with two rolling rollers (7th CGPM)	1927	n.a.	n.a.
Hyperfine atomic transition 1650763.73 spectrum of wavelengths resulting from an identified transition in krypton-86 (11th CGPM)	1960	4 nm	4x10 -9
The length of the path taken through a vacuum of light is 1:597 792 458 seconds (17th CGPM)	1983	0.1 nm	10 -10

Imperial American measurement system. US measurement system

Imperial as well as US measurement systems aren't the same , however for length measurements they are similar (they are not identical in terms of volume, which means e.g. the cup could contain a different amounts of fl oz in each system). The only countries that didn't accept the metric units were US, Liberia and Myanmar.

Six of the most commonly used US imperial length units were incorporated into the length converter:

• one thousandth of an inch (mil / thou),
• Inches (in),
• feet (ft),
• feet and inches,
• yards (yd),
• miles (mi).

There are two additional length units, however we have excluded them from this length converter on purpose: A furlong's conversion ratio isn't widely defined as is the term league was an extremely popular measurement throughout Europe as well as Latin America but is no any longer an official measurement in any country. But, you can locate these units below, along with the most commonly used values:

Unit	Comparative to the previous	Feet	Millimeters	Meters
Thou (th)		1/12000	0.0254	0.0000254
inch (in)	1000 thou	1/12	25.4	0.0254
foot (ft)	12 inches	1	304.8	0.3048
yard (yd)	3 feet	3	914.4	0.9144
chain (ch)	22 yards	66	20116.8	20.1168
furlong (fur)	10 chains	660	201168	201.168
mile (mi)	8 furlongs	5280	1609344	1609.344
league (lea)	3 miles	15840	4828032	4828.032

Metric measurement system

The Metric measurement system, also called"the International System of Units (SI), can be described as an internationally accepted decimal system for weights and measurements. It is widely used throughout the globe (apart from the three countries mentioned earlier) It is simple to use, rational and practical. The four basic units of the measuring in metric are:

• Meter ( m) for length,
• kg ( kg) for mass (check out this weight conversion),
• Second ( s) for time,
• ampere (A) for electromagnetism.

In addition, 22 derivative units with names that are unique exist. They can be divided into five categories:

1. Electromagnetism

• Volt, a measurement of electrical potential,
• Ohm, an unit of electrical resistance,
• Tesla is a measurement unit for magnetic flux density,
• weber is a term used to describe magnetic flux,
• farad is a measurement of capacitance electrical,
• Henry is a term used to describe electrical inductance,
• Siemens is a term used to describe electrical conductance,
• Coulomb is a term used to describe an electric charge.

1. Mechanics

• Watt is a measurement of electrical or mechanical power,
• newton is a term used to describe a unit of mechanical force,
• Joule is a unit of electrical, mechanical or thermodynamic energy,
• pascal is a measurement unit for pressure.

1. Radiation from the electromagnetic spectrum

• becquerel is a unit of radioactive decay,
• Sievert is a type of Ionising radiation that is absorbed. Find the dose of radiation you received in your flight with our flight radiation calculator.
• gray is a type of Ionizing radiation
• lux is a term used to describe luminescent flux
• lumen is a measurement of the intensity of light.

1. Circular arcs as well as Spherical surfaces

• Radian is a unit of circular arc,
• Sterandian is a term used to describe a the spherical surface area.

1. Other

• degrees Celsius is a measurement that measures thermodynamic temperatures. Use this temperature converter that converts degrees Celsius to Kelvins or Fahrenheit.
• Katal is a type of catalytic activity
• hertz is a measurement of the number of cycles in a second.