Length Conversion   | Millimeter (mm) → Centimeter (cm)

Supported Units

Metric System

Name	Description	Conversions
Angstrom (Å)	The Angstrom (Å) is a unit of length commonly used to measure very small distances, particularly in the fields of physics, chemistry and materials science. It is equal to 1 x 10-10 meters (0.1 nanometers), making it useful for describing atomic and molecular scales, such as the size of atoms, wavelengths of light, or the spacing between atoms in a crystal. Conversions: 1 Å = 0.1 nm = 1 x 10-10 meters Common Uses: Atomic and Molecular Measurements Describes the size of atoms and the bond lengths between them. X-ray Crystallography Used to express the resolution of X-ray diffraction patterns. Wavelengths of Light Commonly used to measure the wavelengths of ultraviolet light.	1 Å = 1e-1 nm 1 Å = 1e-4 µm 1 Å = 1e-7 mm 1 Å = 1e-8 cm 1 Å = 1e-9 dm 1 Å = 1e-10 m 1 Å = 1e-13 km 1 Å = 3.937008e-9 in 1 Å = 3.28084e-10 ft 1 Å = 1.093613e-10 yd 1 Å = 6.213712e-14 mi 1 Å = 5.399568e-14 nmi 1 Å = 5.468066e-11 fm 1 Å = 4.97097e-10 Link 1 Å = 4.97097e-12 Chain
Nanometer (nm)	The Nanometer (nm) is a unit of length equal to one billionth of a meter (1 nm = 1 x 10-9 meters). It is commonly used to measure very small distances, especially in fields like nanotechnology, physics, biology and materials science. Conversions: 1 nm = 1 x 10-9 meters Common Uses: Wavelengths of Light Used to measure the wavelengths of visible and ultraviolet light (e.g., visible light ranges from about 400 nm to 700 nm). Nanotechnology Describes the scale of nanomaterials and devices, such as carbon nanotubes and semiconductor components. Biology Used to measure the size of molecules and cellular structures.	1 nm = 1e+1 Å 1 nm = 1e-3 µm 1 nm = 1e-6 mm 1 nm = 1e-7 cm 1 nm = 1e-8 dm 1 nm = 1e-9 m 1 nm = 1e-12 km 1 nm = 3.937008e-8 in 1 nm = 3.28084e-9 ft 1 nm = 1.093613e-9 yd 1 nm = 6.213712e-13 mi 1 nm = 5.399568e-13 nmi 1 nm = 5.468066e-10 fm 1 nm = 4.97097e-9 Link 1 nm = 4.97097e-11 Chain
Micrometer (µm)	The Micrometer (µm) is a unit of length equal to one millionth of a meter (1 µm = 10-6 meters). It is commonly used to measure small objects or distances, particularly in biology, materials science and engineering. Conversions: 1 µm = 10-6 meters Common Uses: Biology Measures the size of cells, bacteria and microscopic organisms. Materials Science Used to describe the thickness of materials like paper, coatings and films. Engineering Common in precision machining to measure tolerances and the diameter of small components.	1 µm = 1e+4 Å 1 µm = 1e+3 nm 1 µm = 1e-3 mm 1 µm = 1e-4 cm 1 µm = 1e-5 dm 1 µm = 1e-6 m 1 µm = 1e-9 km 1 µm = 3.937008e-5 in 1 µm = 3.28084e-6 ft 1 µm = 1.093613e-6 yd 1 µm = 6.213712e-10 mi 1 µm = 5.399568e-10 nmi 1 µm = 5.468066e-7 fm 1 µm = 4.97097e-6 Link 1 µm = 4.97097e-8 Chain
Millimeter (mm)	The Millimeter (mm) is a unit of length in the metric system, equal to one thousandth of a meter (1 mm = 10-3 meters). It is commonly used for measuring small objects and dimensions in everyday life, engineering and science. Conversions: 1 mm = 10-3 meters Common Uses: Everyday Measurements Used to measure small lengths, such as the thickness of a coin, the width of a pencil or the height of small objects. Engineering and Manufacturing Measures precise dimensions in machining, construction and design. Scientific Measurements Used in laboratory measurements and biological studies, like the size of cells or microorganisms.	1 mm = 1e+7 Å 1 mm = 1e+6 nm 1 mm = 1e+3 µm 1 mm = 1e-1 cm 1 mm = 1e-2 dm 1 mm = 1e-3 m 1 mm = 1e-6 km 1 mm = 3.937008e-2 in 1 mm = 3.28084e-3 ft 1 mm = 1.093613e-3 yd 1 mm = 6.213712e-7 mi 1 mm = 5.399568e-7 nmi 1 mm = 5.468066e-4 fm 1 mm = 4.97097e-3 Link 1 mm = 4.97097e-5 Chain
Centimeter (cm)	The Centimeter (cm) is a unit of length in the metric system, equal to one hundredth of a meter (1 cm = 10-2 meters). It is commonly used for everyday measurements, particularly when measuring objects or distances that are too small for meters but too large for millimeters. Conversions: 1 cm = 10-2 meters Common Uses: Everyday Measurements Used to measure dimensions of objects like furniture, height of people and length of paper. Construction and Design Common in measuring small-scale dimensions in architecture, engineering and interior design. Science Often used in fields like biology for measuring the size of larger cells or organisms.	1 cm = 1e+8 Å 1 cm = 1e+7 nm 1 cm = 1e+4 µm 1 cm = 1e+1 mm 1 cm = 1e-1 dm 1 cm = 1e-2 m 1 cm = 1e-5 km 1 cm = 3.937008e-1 in 1 cm = 3.28084e-2 ft 1 cm = 1.093613e-2 yd 1 cm = 6.213712e-6 mi 1 cm = 5.399568e-6 nmi 1 cm = 5.468066e-3 fm 1 cm = 4.97097e-2 Link 1 cm = 4.97097e-4 Chain
Decimeter (dm)	The Decimeter (dm) is a unit of length in the metric system, equal to one tenth of a meter (1 dm = 10-1 meters). It is less commonly used in everyday measurements but is sometimes applied in scientific and technical contexts when a more convenient size than centimeters or meters is needed. Conversions: 1 dm = 10-1 meters Common Uses: Scientific Measurements Occasionally used in fields like physics and engineering for moderate lengths. Geography and Cartography Can be used for specific applications that require measurements between millimeters and meters. Education Sometimes used in teaching to demonstrate the scale of measurements larger than a centimeter but smaller than a meter.	1 dm = 1e+9 Å 1 dm = 1e+8 nm 1 dm = 1e+5 µm 1 dm = 1e+2 mm 1 dm = 1e+1 cm 1 dm = 1e-1 m 1 dm = 1e-4 km 1 dm = 3.937008e+0 in 1 dm = 3.28084e-1 ft 1 dm = 1.093613e-1 yd 1 dm = 6.213712e-5 mi 1 dm = 5.399568e-5 nmi 1 dm = 5.468066e-2 fm 1 dm = 4.97097e-1 Link 1 dm = 4.97097e-3 Chain
Meter (m)	The Meter (m) is the base unit of length in the International System of Units (SI). It is widely used to measure length or distance in most fields, including science, engineering and everyday life. Conversions: 1 meter (m) = 100 centimeters (cm) = 1,000 millimeters (mm) Common Uses: Everyday Measurements Measures distances, room dimensions, height of individuals and lengths of objects. Scientific and Engineering Applications Standard unit for precise measurements in physics, engineering and construction. Global Standard Used universally for international measurements, from small-scale objects to large distances like the dimensions of buildings or the length of roads.	1 m = 1e+10 Å 1 m = 1e+9 nm 1 m = 1e+6 µm 1 m = 1e+3 mm 1 m = 1e+2 cm 1 m = 1e+1 dm 1 m = 1e-3 km 1 m = 3.937008e+1 in 1 m = 3.28084e+0 ft 1 m = 1.093613e+0 yd 1 m = 6.213712e-4 mi 1 m = 5.399568e-4 nmi 1 m = 5.468066e-1 fm 1 m = 4.97097e+0 Link 1 m = 4.97097e-2 Chain
Kilometer (km)	The Kilometer (km) is a unit of length in the metric system, equal to 1,000 meters (1 km = 1,000 m). It is commonly used to measure longer distances, such as those between cities, along roads or across countries. Conversions: 1 km = 1,000 meters (m) Common Uses: Travel and Transportation Measures distances on roads, highways and between locations (e.g., the distance between cities or landmarks). Geography Used for measuring large-scale distances in maps and geographical studies. Sports Commonly used in events like running, cycling and motorsports (e.g., a 5 km race).	1 km = 1e+13 Å 1 km = 1e+12 nm 1 km = 1e+9 µm 1 km = 1e+6 mm 1 km = 1e+5 cm 1 km = 1e+4 dm 1 km = 1e+3 m 1 km = 3.937008e+4 in 1 km = 3.28084e+3 ft 1 km = 1.093613e+3 yd 1 km = 6.213712e-1 mi 1 km = 5.399568e-1 nmi 1 km = 5.468066e+2 fm 1 km = 4.97097e+3 Link 1 km = 4.97097e+1 Chain

Imperial System

Name	Description	Conversions
Inch (in)	The Inch (in) is a unit of length in the imperial system (also known as the U.S. customary system) commonly used in the United States and some other countries. It is equal to 1/12 of a foot or 2.54 centimeters. Conversions: 1 inch = 2.54 centimeters (cm) 1 inch = 1/12 foot Common Uses: Everyday Measurements Measures small lengths like the width of a screen, dimensions of objects and clothing sizes (e.g., waist measurements). Construction and Engineering Used to measure building materials, tools and hardware. Furniture and Design Common in interior design for specifying dimensions of furniture, windows and doors.	1 in = 2.54e+8 Å 1 in = 2.54e+7 nm 1 in = 2.54e+4 µm 1 in = 2.54e+1 mm 1 in = 2.54e+0 cm 1 in = 2.54e-1 dm 1 in = 2.54e-2 m 1 in = 2.54e-5 km 1 in = 8.333333e-2 ft 1 in = 2.777778e-2 yd 1 in = 1.578283e-5 mi 1 in = 1.37149e-5 nmi 1 in = 1.388889e-2 fm 1 in = 1.262626e-1 Link 1 in = 1.262626e-3 Chain
Foot (ft)	The Foot (ft) is a unit of length in the imperial system (also used in the U.S. customary system). It is equal to 12 inches or 0.3048 meters. Conversions: 1 foot = 12 inches 1 foot = 0.3048 meters (m) Common Uses: Everyday Measurements Used to measure height, room dimensions and distances (e.g., a person's height in feet and inches). Construction and Engineering Common in building and construction for measuring lengths, widths and heights. Design and Manufacturing Used in various industries, including carpentry, textiles and aerospace.	1 ft = 3.048e+9 Å 1 ft = 3.048e+8 nm 1 ft = 3.048e+5 µm 1 ft = 3.048e+2 mm 1 ft = 3.048e+1 cm 1 ft = 3.048e+0 dm 1 ft = 3.048e-1 m 1 ft = 3.048e-4 km 1 ft = 1.2e+1 in 1 ft = 3.333333e-1 yd 1 ft = 1.893939e-4 mi 1 ft = 1.645788e-4 nmi 1 ft = 1.666667e-1 fm 1 ft = 1.515152e+0 Link 1 ft = 1.515152e-2 Chain
Yard (yd)	The Yard (yd) is a unit of length in the imperial system and U.S. customary system, equal to 3 feet or 36 inches. It is commonly used for measuring medium-length distances. Conversions: 1 yard = 3 feet = 36 inches 1 yard = 0.9144 meters (m) Common Uses: Everyday Measurements Used to measure lengths in sports (e.g., yards in football), fabric and clothing. Construction and Engineering Used to measure distances in landscaping, building materials and land areas. Land Measurement Sometimes used in real estate or agriculture to measure plots of land.	1 yd = 9.144e+9 Å 1 yd = 9.144e+8 nm 1 yd = 9.144e+5 µm 1 yd = 9.144e+2 mm 1 yd = 9.144e+1 cm 1 yd = 9.144e+0 dm 1 yd = 9.144e-1 m 1 yd = 9.144e-4 km 1 yd = 3.6e+1 in 1 yd = 3e+0 ft 1 yd = 5.681818e-4 mi 1 yd = 4.937365e-4 nmi 1 yd = 5e-1 fm 1 yd = 4.545455e+0 Link 1 yd = 4.545455e-2 Chain
Mile (mi)	The Mile (mi) is a unit of length in the imperial system and U.S. customary system, commonly used to measure longer distances, especially in travel and geography. It is equal to 1,760 yards or 5,280 feet. Conversions: 1 mile = 1,760 yards = 5,280 feet 1 mile = 1.609344 kilometers (km) Common Uses: Travel and Transportation Measures distances between cities, along roads and in navigation. Geography Used for large-scale distance measurements, such as in mapping and land surveying. Sports Commonly used in long-distance running events (e.g., a 5-mile race).	1 mi = 1.609344e+13 Å 1 mi = 1.609344e+12 nm 1 mi = 1.609344e+9 µm 1 mi = 1.609344e+6 mm 1 mi = 1.609344e+5 cm 1 mi = 1.609344e+4 dm 1 mi = 1.609344e+3 m 1 mi = 1.609344e+0 km 1 mi = 6.336e+4 in 1 mi = 5.28e+3 ft 1 mi = 1.76e+3 yd 1 mi = 8.689762e-1 nmi 1 mi = 8.8e+2 fm 1 mi = 8e+3 Link 1 mi = 8e+1 Chain

Nautical Units

Name	Description	Conversions
Nautical Mile (nmi)	The Nautical Mile (nmi) is a unit of length used primarily in maritime and aviation navigation, based on the circumference of the Earth. It is defined as 1,852 meters or about 1.15078 miles. Conversions: 1 nautical mile = 1,852 meters (m) 1 nautical mile ≈ 1.15078 miles (mi) Common Uses: Maritime and Aviation Navigation Used to measure distances between locations on the Earth's surface, especially at sea or in the air. Mapping Often used in charts and maps for global navigation, as it relates to degrees of latitude. International Standards Used universally in global navigation to ensure consistent distance measurement across different systems and countries.	1 nmi = 1.852e+13 Å 1 nmi = 1.852e+12 nm 1 nmi = 1.852e+9 µm 1 nmi = 1.852e+6 mm 1 nmi = 1.852e+5 cm 1 nmi = 1.852e+4 dm 1 nmi = 1.852e+3 m 1 nmi = 1.852e+0 km 1 nmi = 7.291339e+4 in 1 nmi = 6.076115e+3 ft 1 nmi = 2.025372e+3 yd 1 nmi = 1.150779e+0 mi 1 nmi = 1.012686e+3 fm 1 nmi = 9.206236e+3 Link 1 nmi = 9.206236e+1 Chain
Fathom (fm)	The Fathom (fm) is a unit of length used primarily in maritime contexts to measure depth of water or the height of underwater objects. It is equal to 6 feet or 1.8288 meters. Conversions: 1 nautical fathom = 6 feet (ft) 1 nautical fathom = 1.8288 meters (m) Common Uses: Maritime Navigation Used to measure the depth of water, often found on nautical charts and in sonar measurements. Fishing and Diving Common in underwater activities to measure the depth of bodies of water. Geography and Oceanography Used to describe the depth of oceans, lakes or rivers.	1 fm = 1.8288e+10 Å 1 fm = 1.8288e+9 nm 1 fm = 1.8288e+6 µm 1 fm = 1.8288e+3 mm 1 fm = 1.8288e+2 cm 1 fm = 1.8288e+1 dm 1 fm = 1.8288e+0 m 1 fm = 1.8288e-3 km 1 fm = 7.2e+1 in 1 fm = 6e+0 ft 1 fm = 2e+0 yd 1 fm = 1.136364e-3 mi 1 fm = 9.87473e-4 nmi 1 fm = 9.090909e+0 Link 1 fm = 9.090909e-2 Chain

Traditional Units

Name	Description	Conversions
Link	The Link is a unit of length used in land surveying and is defined as 1/100 of a chain. It is equal to 7.92 inches or 0.201168 meters. Conversions: 1 link = 7.92 inches = 0.201168 meters (m) Common Uses: Surveying and Land Measurement Traditionally used in land surveying, especially for measuring distances in the U.S. and the UK. Historic Applications Often used in combination with the chain (66 feet) to measure land areas for property and construction.	1 Link = 2.01168e+9 Å 1 Link = 2.01168e+8 nm 1 Link = 2.01168e+5 µm 1 Link = 2.01168e+2 mm 1 Link = 2.01168e+1 cm 1 Link = 2.01168e+0 dm 1 Link = 2.01168e-1 m 1 Link = 2.01168e-4 km 1 Link = 7.92e+0 in 1 Link = 6.6e-1 ft 1 Link = 2.2e-1 yd 1 Link = 1.25e-4 mi 1 Link = 1.08622e-4 nmi 1 Link = 1.1e-1 fm 1 Link = 1e-2 Chain
Chain	The Chain is a unit of length traditionally used in land surveying. It is equal to 66 feet or 20.1168 meters. The chain is primarily used for measuring larger distances in land measurement and surveying tasks. Conversions: 1 chain = 66 feet (ft) = 20.1168 meters (m) Common Uses: Surveying Historically, the chain was used to measure distances in land surveys, especially in the U.S. and the UK. Mapping and Property Measurement Often used to describe land plots and to mark boundaries in rural areas.	1 Chain = 2.01168e+11 Å 1 Chain = 2.01168e+10 nm 1 Chain = 2.01168e+7 µm 1 Chain = 2.01168e+4 mm 1 Chain = 2.01168e+3 cm 1 Chain = 2.01168e+2 dm 1 Chain = 2.01168e+1 m 1 Chain = 2.01168e-2 km 1 Chain = 7.92e+2 in 1 Chain = 6.6e+1 ft 1 Chain = 2.2e+1 yd 1 Chain = 1.25e-2 mi 1 Chain = 1.08622e-2 nmi 1 Chain = 1.1e+1 fm 1 Chain = 1e+2 Link