Convert Centimetre to Kilometre
1 centimetre = 0.00001 kilometre (km). For example, 10 centimetre = 0.0001 kilometre and 100 centimetre = 0.001 kilometre. Type any value below to convert centimetre to kilometre both ways — it runs entirely in your browser.
Quick answer: Centimetre to Kilometre
1 Centimetre = 0.00001 Kilometre (cm → km). To convert centimetre to kilometre, multiply by 0.00001. To convert kilometre to centimetre, multiply by 100,000. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common centimetre-to-kilometre questions.
How to convert Centimetre to Kilometre
To convert centimetre to kilometre, multiply the number of centimetre by the conversion factor 0.00001, because 1 cm = 0.00001 km. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 km = 100,000 cm, so you divide by 0.00001 (or multiply by 100,000) to turn kilometre back into centimetre.
km = cm × 0.00001 ·
cm = km × 100,000
- Write down the value you want to convert, in centimetre.
- Multiply it by 0.00001.
- The result is the same area/length/quantity expressed in kilometre.
Centimetre to Kilometre — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 centimetre is 0.00005 kilometre because 5 cm × 0.00001 = 0.00005 km.
| Centimetre | Calculation | Kilometre |
|---|---|---|
| 1 cm | 1 cm × 0.00001 = 0.00001 km | 0.00001 km |
| 2 cm | 2 cm × 0.00001 = 0.00002 km | 0.00002 km |
| 3 cm | 3 cm × 0.00001 = 0.00003 km | 0.00003 km |
| 5 cm | 5 cm × 0.00001 = 0.00005 km | 0.00005 km |
| 7 cm | 7 cm × 0.00001 = 0.00007 km | 0.00007 km |
| 10 cm | 10 cm × 0.00001 = 0.0001 km | 0.0001 km |
| 12 cm | 12 cm × 0.00001 = 0.00012 km | 0.00012 km |
| 15 cm | 15 cm × 0.00001 = 0.00015 km | 0.00015 km |
| 20 cm | 20 cm × 0.00001 = 0.0002 km | 0.0002 km |
| 25 cm | 25 cm × 0.00001 = 0.00025 km | 0.00025 km |
| 50 cm | 50 cm × 0.00001 = 0.0005 km | 0.0005 km |
| 100 cm | 100 cm × 0.00001 = 0.001 km | 0.001 km |
Common Centimetre to Kilometre conversions
These are the centimetre-to-kilometre values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 centimetre = 0.00001 kilometre
- 2 centimetre = 0.00002 kilometre
- 2.5 centimetre = 0.000025 kilometre
- 3 centimetre = 0.00003 kilometre
- 4 centimetre = 0.00004 kilometre
- 5 centimetre = 0.00005 kilometre
- 6 centimetre = 0.00006 kilometre
- 7 centimetre = 0.00007 kilometre
- 8 centimetre = 0.00008 kilometre
- 9 centimetre = 0.00009 kilometre
- 10 centimetre = 0.0001 kilometre
- 12 centimetre = 0.00012 kilometre
- 15 centimetre = 0.00015 kilometre
- 20 centimetre = 0.0002 kilometre
- 25 centimetre = 0.00025 kilometre
- 30 centimetre = 0.0003 kilometre
- 50 centimetre = 0.0005 kilometre
- 75 centimetre = 0.00075 kilometre
- 100 centimetre = 0.001 kilometre
- 200 centimetre = 0.002 kilometre
- 500 centimetre = 0.005 kilometre
- 1000 centimetre = 0.01 kilometre
Centimetre to Kilometre conversion chart (both directions)
The chart below converts centimetre to kilometre and kilometre to centimetre side by side, so it works whichever way you need. 1 centimetre = 0.00001 kilometre, and 1 kilometre = 100,000 centimetre.
| Centimetre → Kilometre | Kilometre → Centimetre |
|---|---|
| 0.25 cm = 0.0000025 km | 0.25 km = 25,000 cm |
| 0.5 cm = 0.000005 km | 0.5 km = 50,000 cm |
| 1 cm = 0.00001 km | 1 km = 100,000 cm |
| 2 cm = 0.00002 km | 2 km = 200,000 cm |
| 3 cm = 0.00003 km | 3 km = 300,000 cm |
| 4 cm = 0.00004 km | 4 km = 400,000 cm |
| 5 cm = 0.00005 km | 5 km = 500,000 cm |
| 6 cm = 0.00006 km | 6 km = 600,000 cm |
| 7 cm = 0.00007 km | 7 km = 700,000 cm |
| 8 cm = 0.00008 km | 8 km = 800,000 cm |
| 9 cm = 0.00009 km | 9 km = 900,000 cm |
| 10 cm = 0.0001 km | 10 km = 1,000,000 cm |
| 12 cm = 0.00012 km | 12 km = 1,200,000 cm |
| 15 cm = 0.00015 km | 15 km = 1,500,000 cm |
| 20 cm = 0.0002 km | 20 km = 2,000,000 cm |
| 25 cm = 0.00025 km | 25 km = 2,500,000 cm |
| 30 cm = 0.0003 km | 30 km = 3,000,000 cm |
| 40 cm = 0.0004 km | 40 km = 4,000,000 cm |
| 50 cm = 0.0005 km | 50 km = 5,000,000 cm |
| 75 cm = 0.00075 km | 75 km = 7,500,000 cm |
| 100 cm = 0.001 km | 100 km = 10,000,000 cm |
| 150 cm = 0.0015 km | 150 km = 15,000,000 cm |
| 200 cm = 0.002 km | 200 km = 20,000,000 cm |
| 250 cm = 0.0025 km | 250 km = 25,000,000 cm |
| 500 cm = 0.005 km | 500 km = 50,000,000 cm |
| 1000 cm = 0.01 km | 1000 km = 100,000,000 cm |
Centimetre vs Kilometre: which is bigger?
A kilometre is the larger unit: one kilometre equals 100,000 centimetres. Put another way, you need 100,000 centimetres to make a single kilometre.
What is a Centimetre? History, origin and usage
The centimetre is one-hundredth of a metre, from the Latin centum, 'hundred'. It became prominent as the base length of the centimetre-gram-second (CGS) system used by many 19th- and early-20th-century physicists.
The centimetre is the everyday metric unit for small measurements such as human height, clothing sizes, paper and rulers across most of the world. It sits conveniently between the millimetre and the metre.
For decades scientists worked in the centimetre-gram-second system before the metre-kilogram-second system prevailed. A standard school ruler is typically 30 cm long.
What is a Kilometre? History, origin and usage
The kilometre combines the Greek-derived prefix 'kilo-' (from khilioi, 'thousand') with the metre. It was among the eight original decimal prefixes adopted by the French Academy of Sciences in 1795, soon after the metre itself was defined during the French Revolution.
The kilometre is the standard unit for road, map and geographic distances throughout most of the world. Nearly every country signs its highways and speed limits in kilometres; the main holdouts that still post road distances in miles are the United States and the United Kingdom.
Although the prefix 'kilo-' comes from Greek, the names of the metric submultiples such as deci- and centi- were drawn from Latin instead. The popular running benchmark known as a '5K' is simply a five-kilometre race.
Convert 1 Centimetre to other units
It can help to see a centimetre next to the other units it is commonly compared with. One centimetre (cm) is equal to:
| 1 Centimetre equals | Unit |
|---|---|
| 0.00001 km | Kilometre |
| 0.01 m | Metre |
| 0.1 dm | Decimetre |
| 10 mm | Millimetre |
| 10,000 µm | Micrometre |
| 0.000006213712 mi | Mile |
| 0.01093613 yd | Yard |
| 0.0328084 ft | Foot |
| 0.3937008 in | Inch |
| 0.000005399568 nmi | Nautical Mile |
| 0.0000497097 fur | Furlong |
| 0.000497097 ch | Chain |
| 0.0497097 li | Link |
| 0.001988388 rd | Rod |
| 0.001988388 pole | Pole |
| 0.005468066 ftm | Fathom |
| 0.0984252 hand | Hand |
| 0.04374453 span | Span |
| 0.08748906 finger | Finger |
| 0.02187227 cubit | Cubit |
| 0.00164042 rope | Rope |
| 0.0055 ken | Ken |
| 0.000002071237 lea | League |
| 28.34646 pt | Point |
| 0.00000000000006684587 AU | Astronomical Unit |
| 0.000000000000000001057001 ly | Light-year |
| 0.001 dam | Decametre |
| 0.0001 hm | Hectometre |
| 0.000001799856 nl | Nautical League |
Convert 1 Kilometre to other units
One kilometre (km) is equal to:
| 1 Kilometre equals | Unit |
|---|---|
| 1,000 m | Metre |
| 10,000 dm | Decimetre |
| 100,000 cm | Centimetre |
| 1,000,000 mm | Millimetre |
| 1,000,000,000 µm | Micrometre |
| 0.6213712 mi | Mile |
| 1,093.613 yd | Yard |
| 3,280.84 ft | Foot |
| 39,370.08 in | Inch |
| 0.5399568 nmi | Nautical Mile |
| 4.97097 fur | Furlong |
| 49.7097 ch | Chain |
| 4,970.97 li | Link |
| 198.8388 rd | Rod |
| 198.8388 pole | Pole |
| 546.8066 ftm | Fathom |
| 9,842.52 hand | Hand |
| 4,374.453 span | Span |
| 8,748.906 finger | Finger |
| 2,187.227 cubit | Cubit |
| 164.042 rope | Rope |
| 550 ken | Ken |
| 0.2071237 lea | League |
| 2,834,646 pt | Point |
| 0.000000006684587 AU | Astronomical Unit |
| 0.0000000000001057001 ly | Light-year |
| 100 dam | Decametre |
| 10 hm | Hectometre |
| 0.1799856 nl | Nautical League |
Tips for converting Centimetre to Kilometre
- To go from centimetre to kilometre, multiply by 0.00001; to go back, divide by 0.00001 (or multiply by 100,000).
- For a quick mental estimate, remember that 1 centimetre ≈ 0.00001 kilometre, so 10 centimetre ≈ 0.0001 kilometre.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Centimetre to Kilometre converter
Type a number into the Centimetre field and the equivalent in Kilometre appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Kilometre field to convert the other way (kilometre to centimetre). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 cm = 0.00001 km), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for centimetre-to-kilometre conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
- NIST — Definitions of the SI base units — the US National Institute of Standards and Technology reference for the SI base units, used here as an independent cross-check on the base-unit definition.
The metric units (km, m, cm, mm, µm) are exact by definition, and the imperial units (mile, yard, foot, inch, nautical mile) use their exact international values. Traditional units (hand, span, finger, cubit, rod/pole, link, rope, ken, league) are given at their commonly accepted standard sizes — historical local values sometimes differed, so confirm against a primary source before relying on them for legal or historical work.
Frequently asked questions
- How many kilometre are in 1 centimetre?
- 1 centimetre = 0.00001 kilometre (km). To convert any number of centimetre to kilometre, multiply by 0.00001.
- How do I convert centimetre to kilometre?
- Multiply the number of centimetre by 0.00001. For example, 10 centimetre = 10 × 0.00001 = 0.0001 kilometre, and 25 centimetre = 0.00025 kilometre.
- How many centimetre are in 1 kilometre?
- 1 kilometre = 100,000 centimetre. So to convert kilometre back to centimetre, multiply by 100,000.
- What is the formula to convert centimetre to kilometre?
- kilometre = centimetre × 0.00001. The reverse formula is centimetre = kilometre × 100,000.
- How much is 100 centimetre in kilometre?
- 100 centimetre = 0.001 kilometre. (And 1000 centimetre = 0.01 kilometre.)
- Which is bigger, a centimetre or a kilometre?
- A kilometre is larger: 1 kilometre = 100,000 centimetre.
- Is this centimetre to kilometre converter accurate?
- Yes — every value is computed from the exact 0.00001 km per cm factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert kilometre to centimetre too?
- Yes. The converter works both ways — enter a value in either field. 1 kilometre = 100,000 centimetre.