Convert Kilometre to Centimetre
1 kilometre = 100,000 centimetre (cm). For example, 10 kilometre = 1,000,000 centimetre and 100 kilometre = 10,000,000 centimetre. Type any value below to convert kilometre to centimetre both ways — it runs entirely in your browser.
Quick answer: Kilometre to Centimetre
1 Kilometre = 100,000 Centimetre (km → cm). To convert kilometre to centimetre, multiply by 100,000. To convert centimetre to kilometre, multiply by 0.00001. 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 kilometre-to-centimetre questions.
How to convert Kilometre to Centimetre
To convert kilometre to centimetre, multiply the number of kilometre by the conversion factor 100,000, because 1 km = 100,000 cm. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 cm = 0.00001 km, so you divide by 100,000 (or multiply by 0.00001) to turn centimetre back into kilometre.
cm = km × 100,000 ·
km = cm × 0.00001
- Write down the value you want to convert, in kilometre.
- Multiply it by 100,000.
- The result is the same area/length/quantity expressed in centimetre.
Kilometre to Centimetre — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 kilometre is 500,000 centimetre because 5 km × 100,000 = 500,000 cm.
| Kilometre | Calculation | Centimetre |
|---|---|---|
| 1 km | 1 km × 100,000 = 100,000 cm | 100,000 cm |
| 2 km | 2 km × 100,000 = 200,000 cm | 200,000 cm |
| 3 km | 3 km × 100,000 = 300,000 cm | 300,000 cm |
| 5 km | 5 km × 100,000 = 500,000 cm | 500,000 cm |
| 7 km | 7 km × 100,000 = 700,000 cm | 700,000 cm |
| 10 km | 10 km × 100,000 = 1,000,000 cm | 1,000,000 cm |
| 12 km | 12 km × 100,000 = 1,200,000 cm | 1,200,000 cm |
| 15 km | 15 km × 100,000 = 1,500,000 cm | 1,500,000 cm |
| 20 km | 20 km × 100,000 = 2,000,000 cm | 2,000,000 cm |
| 25 km | 25 km × 100,000 = 2,500,000 cm | 2,500,000 cm |
| 50 km | 50 km × 100,000 = 5,000,000 cm | 5,000,000 cm |
| 100 km | 100 km × 100,000 = 10,000,000 cm | 10,000,000 cm |
Common Kilometre to Centimetre conversions
These are the kilometre-to-centimetre values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 kilometre = 100,000 centimetre
- 2 kilometre = 200,000 centimetre
- 2.5 kilometre = 250,000 centimetre
- 3 kilometre = 300,000 centimetre
- 4 kilometre = 400,000 centimetre
- 5 kilometre = 500,000 centimetre
- 6 kilometre = 600,000 centimetre
- 7 kilometre = 700,000 centimetre
- 8 kilometre = 800,000 centimetre
- 9 kilometre = 900,000 centimetre
- 10 kilometre = 1,000,000 centimetre
- 12 kilometre = 1,200,000 centimetre
- 15 kilometre = 1,500,000 centimetre
- 20 kilometre = 2,000,000 centimetre
- 25 kilometre = 2,500,000 centimetre
- 30 kilometre = 3,000,000 centimetre
- 50 kilometre = 5,000,000 centimetre
- 75 kilometre = 7,500,000 centimetre
- 100 kilometre = 10,000,000 centimetre
- 200 kilometre = 20,000,000 centimetre
- 500 kilometre = 50,000,000 centimetre
- 1000 kilometre = 100,000,000 centimetre
Kilometre to Centimetre conversion chart (both directions)
The chart below converts kilometre to centimetre and centimetre to kilometre side by side, so it works whichever way you need. 1 kilometre = 100,000 centimetre, and 1 centimetre = 0.00001 kilometre.
| Kilometre → Centimetre | Centimetre → Kilometre |
|---|---|
| 0.25 km = 25,000 cm | 0.25 cm = 0.0000025 km |
| 0.5 km = 50,000 cm | 0.5 cm = 0.000005 km |
| 1 km = 100,000 cm | 1 cm = 0.00001 km |
| 2 km = 200,000 cm | 2 cm = 0.00002 km |
| 3 km = 300,000 cm | 3 cm = 0.00003 km |
| 4 km = 400,000 cm | 4 cm = 0.00004 km |
| 5 km = 500,000 cm | 5 cm = 0.00005 km |
| 6 km = 600,000 cm | 6 cm = 0.00006 km |
| 7 km = 700,000 cm | 7 cm = 0.00007 km |
| 8 km = 800,000 cm | 8 cm = 0.00008 km |
| 9 km = 900,000 cm | 9 cm = 0.00009 km |
| 10 km = 1,000,000 cm | 10 cm = 0.0001 km |
| 12 km = 1,200,000 cm | 12 cm = 0.00012 km |
| 15 km = 1,500,000 cm | 15 cm = 0.00015 km |
| 20 km = 2,000,000 cm | 20 cm = 0.0002 km |
| 25 km = 2,500,000 cm | 25 cm = 0.00025 km |
| 30 km = 3,000,000 cm | 30 cm = 0.0003 km |
| 40 km = 4,000,000 cm | 40 cm = 0.0004 km |
| 50 km = 5,000,000 cm | 50 cm = 0.0005 km |
| 75 km = 7,500,000 cm | 75 cm = 0.00075 km |
| 100 km = 10,000,000 cm | 100 cm = 0.001 km |
| 150 km = 15,000,000 cm | 150 cm = 0.0015 km |
| 200 km = 20,000,000 cm | 200 cm = 0.002 km |
| 250 km = 25,000,000 cm | 250 cm = 0.0025 km |
| 500 km = 50,000,000 cm | 500 cm = 0.005 km |
| 1000 km = 100,000,000 cm | 1000 cm = 0.01 km |
Kilometre vs Centimetre: 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 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.
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.
Convert 1 Kilometre to other units
It can help to see a kilometre next to the other units it is commonly compared with. 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 |
Convert 1 Centimetre to other units
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 |
Tips for converting Kilometre to Centimetre
- To go from kilometre to centimetre, multiply by 100,000; to go back, divide by 100,000 (or multiply by 0.00001).
- For a quick mental estimate, remember that 1 kilometre ≈ 100,000 centimetre, so 10 kilometre ≈ 1,000,000 centimetre.
- 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 Kilometre to Centimetre converter
Type a number into the Kilometre field and the equivalent in Centimetre 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 Centimetre field to convert the other way (centimetre to kilometre). 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 km = 100,000 cm), 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 kilometre-to-centimetre 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 centimetre are in 1 kilometre?
- 1 kilometre = 100,000 centimetre (cm). To convert any number of kilometre to centimetre, multiply by 100,000.
- How do I convert kilometre to centimetre?
- Multiply the number of kilometre by 100,000. For example, 10 kilometre = 10 × 100,000 = 1,000,000 centimetre, and 25 kilometre = 2,500,000 centimetre.
- How many kilometre are in 1 centimetre?
- 1 centimetre = 0.00001 kilometre. So to convert centimetre back to kilometre, multiply by 0.00001.
- What is the formula to convert kilometre to centimetre?
- centimetre = kilometre × 100,000. The reverse formula is kilometre = centimetre × 0.00001.
- How much is 100 kilometre in centimetre?
- 100 kilometre = 10,000,000 centimetre. (And 1000 kilometre = 100,000,000 centimetre.)
- Which is bigger, a kilometre or a centimetre?
- A kilometre is larger: 1 kilometre = 100,000 centimetre.
- Is this kilometre to centimetre converter accurate?
- Yes — every value is computed from the exact 100,000 cm per km factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert centimetre to kilometre too?
- Yes. The converter works both ways — enter a value in either field. 1 centimetre = 0.00001 kilometre.