| 0cm | 0nm |
| 1cm | 10,000,000nm |
| 2cm | 20,000,000nm |
| 3cm | 30,000,000nm |
| 4cm | 40,000,000nm |
| 5cm | 50,000,000nm |
| 6cm | 60,000,000nm |
| 7cm | 70,000,000nm |
| 8cm | 80,000,000nm |
| 9cm | 90,000,000nm |
| 10cm | 100,000,000nm |
| 11cm | 110,000,000nm |
| 12cm | 120,000,000nm |
| 13cm | 130,000,000nm |
| 14cm | 140,000,000nm |
| 15cm | 150,000,000nm |
| 16cm | 160,000,000nm |
| 17cm | 170,000,000nm |
| 18cm | 180,000,000nm |
| 19cm | 190,000,000nm |
| 20cm | 200,000,000nm |
| 21cm | 210,000,000nm |
| 22cm | 220,000,000nm |
| 23cm | 230,000,000nm |
| 24cm | 240,000,000nm |
| 25cm | 250,000,000nm |
| 26cm | 260,000,000nm |
| 27cm | 270,000,000nm |
| 28cm | 280,000,000nm |
| 29cm | 290,000,000nm |
| 30cm | 300,000,000nm |
| 31cm | 310,000,000nm |
| 32cm | 320,000,000nm |
| 33cm | 330,000,000nm |
| 34cm | 340,000,000nm |
| 35cm | 350,000,000nm |
| 36cm | 360,000,000nm |
| 37cm | 370,000,000nm |
| 38cm | 380,000,000nm |
| 39cm | 390,000,000nm |
| 40cm | 400,000,000nm |
| 41cm | 410,000,000nm |
| 42cm | 420,000,000nm |
| 43cm | 430,000,000nm |
| 44cm | 440,000,000nm |
| 45cm | 450,000,000nm |
| 46cm | 460,000,000nm |
| 47cm | 470,000,000nm |
| 48cm | 480,000,000nm |
| 49cm | 490,000,000nm |
| 50cm | 500,000,000nm |
| 51cm | 510,000,000nm |
| 52cm | 520,000,000nm |
| 53cm | 530,000,000nm |
| 54cm | 540,000,000nm |
| 55cm | 550,000,000nm |
| 56cm | 560,000,000nm |
| 57cm | 570,000,000nm |
| 58cm | 580,000,000nm |
| 59cm | 590,000,000nm |
| 60cm | 600,000,000nm |
| 61cm | 610,000,000nm |
| 62cm | 620,000,000nm |
| 63cm | 630,000,000nm |
| 64cm | 640,000,000nm |
| 65cm | 650,000,000nm |
| 66cm | 660,000,000nm |
| 67cm | 670,000,000nm |
| 68cm | 680,000,000nm |
| 69cm | 690,000,000nm |
| 70cm | 700,000,000nm |
| 71cm | 710,000,000nm |
| 72cm | 720,000,000nm |
| 73cm | 730,000,000nm |
| 74cm | 740,000,000nm |
| 75cm | 750,000,000nm |
| 76cm | 760,000,000nm |
| 77cm | 770,000,000nm |
| 78cm | 780,000,000nm |
| 79cm | 790,000,000nm |
| 80cm | 800,000,000nm |
| 81cm | 810,000,000nm |
| 82cm | 820,000,000nm |
| 83cm | 830,000,000nm |
| 84cm | 840,000,000nm |
| 85cm | 850,000,000nm |
| 86cm | 860,000,000nm |
| 87cm | 870,000,000nm |
| 88cm | 880,000,000nm |
| 89cm | 890,000,000nm |
| 90cm | 900,000,000nm |
| 91cm | 910,000,000nm |
| 92cm | 920,000,000nm |
| 93cm | 930,000,000nm |
| 94cm | 940,000,000nm |
| 95cm | 950,000,000nm |
| 96cm | 960,000,000nm |
| 97cm | 970,000,000nm |
| 98cm | 980,000,000nm |
| 99cm | 990,000,000nm |
The centimetre is a unit of length and is a multiple of the metre; an SI derived unit. It has the symbol cm.
A centimetre is equal to 0.01m. It is also ≈ 0.3937in.
Centimetres are used in maps to scale up conversions to real world measurements.
The nanometre is a unit of length and is a multiple of the SI unit metre. It uses the symbol nm.
1 nm is equal to one one-billionth of a metre. (Nano is the prefix for one billionth). It is used to express dimensions on an atomic scale for example a helium atom has a radius of approximately 0.03nm.
The nanometre was previously known as the millimicrometre (or the millimicron).