Convert Centi to Milli

Centi (c) to Milli (m) SI prefix conversion — enter any value below to get an instant result, or use the table for common values.

Results from this calculator are estimates provided for general informational purposes only, based on formulas, rates, and standards commonly accepted as of 2026. Figures may differ slightly from other calculators or professional sources due to rounding methods, differing assumptions, or regional regulations, and rules may change over time. Always consult a qualified professional — such as a financial advisor, healthcare provider, or other relevant specialist — before making decisions based on these results.

Value

From

Result

1 c = 10 m

1 Centi = 10 Milli

1 Milli = 0.1 Centi

1 c in every supported prefix

Conversion chart: Centi to Milli

Conversion table

Centi (c)	Milli (m)
0.01 c	0.1 m
0.1 c	1 m
1 c	10 m
2 c	20 m
3 c	30 m
5 c	50 m
10 c	100 m
20 c	200 m
50 c	500 m
100 c	1000 m
1000 c	10000 m

Centi (c)

Definition: An SI prefix denoting a factor of 10⁻² — one hundredth of the base unit.

History: One of the original six metric prefixes adopted in France in 1795, from the Latin 'centum' (hundred).

Current use: Extremely common in everyday measurement — centimeters for length and centiliters for small liquid volumes are used worldwide.

Milli (m)

Definition: An SI prefix denoting a factor of 10⁻³ — one thousandth of the base unit.

History: One of the original six metric prefixes adopted in France in 1795, from the Latin 'mille' (thousand).

Current use: Ubiquitous in science, medicine, and engineering — milligrams for dosages, milliliters for small volumes, and millimeters for precise length measurement.

Supported Units

Prefix	Symbol	Multiplier (× base)
Yotta	Y	1E+24
Zetta	Z	1E+21
Exa	E	1E+18
Peta	P	1E+15
Tera	T	1E+12
Giga	G	1E+09
Mega	M	1000000
Kilo	k	1000
Hecto	h	100
Deka	da	10
None (base unit)	—	1
Deci	d	0.1
Centi	c	0.01
Milli	m	0.001
Micro	µ	1E-06
Nano	n	1E-09
Pico	p	1E-12
Femto	f	1E-15
Atto	a	1E-18
Zepto	z	1E-21
Yocto	y	1E-24

About These Parameters

Value: The number of "From" prefix units you want to re-express in the "To" prefix. Since prefixes are just multiplier scales, this value can represent anything from a physical quantity's leading digits to a plain abstract number.
From Unit: The SI prefix your value is currently scaled by — for example, the "kilo" in "kilogram" or the "nano" in "nanosecond," entered here without the base unit attached.
To Unit: The SI prefix you want the value re-expressed in. Use the swap button to flip From and To instantly, handy when converting a datasheet figure from one prefix scale to another.

How Prefix Conversion Works

The Formula

Every SI prefix is defined by a fixed power-of-ten multiplier relative to the unprefixed base value. To convert a value from one prefix scale to another:

result = value × (multiplier of "From" prefix ÷ multiplier of "To" prefix)

For Centi → Milli: multiply by 10. For example, 1 c × 10 = 10 m.

A History of Powers of Ten

The original six metric prefixes — kilo, hecto, deka, deci, centi, milli — were adopted by the French Academy of Sciences in 1795 alongside the metric system itself. As science and industry needed to describe ever-larger and ever-smaller quantities, the CGPM (Conférence Générale des Poids et Mesures) extended the table repeatedly: mega and micro in 1960 when the modern SI was formalized, giga and nano the same year, tera and pico following soon after, then peta/femto (1975), exa/atto (1975), and finally zetta/zepto and yotta/yocto in 1991 — the classical range covered on this page. In 2022 the CGPM went further still, adding ronna/ronto and quetta/quecto to keep pace with data-storage and astrophysical quantities that had begun to outgrow even yotta.

Why a Prefix-Only Converter Is Useful

Every other unit converter on this site attaches these same prefixes to one specific base unit — grams, watts, bytes, farads — because that's how the prefix is actually used in practice. But the underlying math of "how much bigger is giga than mega" never changes no matter which unit it's modifying, so it's often faster to reason about the prefix scale on its own: quickly checking that a "giga" figure is a billion and not a million, or converting a "nano" measurement from one datasheet into the "micro" scale used by a different one, without needing to know or care what physical quantity either figure describes.

Example

1 c equals 10 m. Whatever base unit these prefixes are actually attached to — grams, bytes, watts, seconds — the same multiplier ratio applies: 1 kilo- is always 1,000 times 1 (unprefixed), and 1 mega- is always 1,000 times 1 kilo-, regardless of the quantity being measured.

Frequently Asked Questions

How many Milli are in 1 Centi?

1 Centi (c) equals exactly 10 Milli (m).

Is giga a billion or a million?

Giga is always a billion (10⁹) times the base unit — a common point of confusion is with "mega," which is a million (10⁶). The two are frequently mixed up in casual conversation about data storage and computing speed, which is exactly the kind of mistake this converter is designed to catch.

Does this converter work for any unit, like grams or bytes?

Yes — this converter deliberately ignores the underlying unit and works purely with the multiplier scale. "1 kilo- to mega-" gives the same ratio (0.001) whether you mentally attach it to grams, watts, bytes, or any other quantity, because the prefix's multiplier is independent of what it's modifying.

What does "None (base unit)" mean in the unit list?

"None (base unit)" represents a value with no prefix attached at all — a plain gram, meter, or watt rather than a kilogram, kilometer, or milliwatt. It's included so you can convert directly between an unprefixed value and any prefixed scale, such as figuring out how many kilo- units equal one plain (unprefixed) unit.

Are ronna, ronto, quetta, and quecto included here?

Not yet — this page covers the classical SI prefix range from yotta (10²⁴) down to yocto (10⁻²⁴), which was complete from 1991 until 2022. The newer 2022 additions (ronna/ronna-, quetta/quecto) sit beyond even yotta and yocto and aren't included in this table.

Convert Centi to Other Prefixes

Possible Prefix Conversions

Yocto to Pico Yocto to Deci Giga to Hecto Deci to Femto Zepto to Milli Mega to Deka Giga to Deci None (base unit) to Yotta Centi to Femto Peta to Kilo Exa to Yotta Mega to Kilo Deci to Peta Yotta to Nano Yotta to Pico Kilo to Tera Yotta to Peta Nano to Peta Pico to None (base unit) Yocto to Centi Yotta to Milli Peta to Pico Yotta to Zetta Atto to Femto Peta to None (base unit) None (base unit) to Centi Giga to Yocto None (base unit) to Tera Micro to Peta Nano to Deka Giga to Femto Kilo to Zetta Yotta to Kilo Tera to Deci Pico to Milli Zetta to Giga Zetta to Milli Kilo to Hecto Hecto to Tera Yotta to Mega Mega to Peta Centi to Yocto Nano to Kilo Hecto to Pico Milli to Zepto Yotta to Tera Mega to Hecto Milli to Yocto Atto to Deci None (base unit) to Exa Deka to Exa Zepto to None (base unit) Yotta to Atto Mega to Atto Pico to Femto Exa to Nano Tera to Deka Atto to Tera Zetta to Zepto Zepto to Yocto Peta to Zepto Peta to Deci Hecto to Atto Zetta to Atto Deci to Yocto Milli to Kilo Tera to Pico Pico to Hecto Zepto to Deka Femto to Exa Yotta to Hecto Peta to Centi Kilo to Femto Micro to Kilo Yotta to None (base unit) Tera to Mega Peta to Tera Zetta to None (base unit) Deci to Exa Deci to Giga Micro to None (base unit) Tera to Femto Deka to Centi Deci to Micro Atto to Centi Yocto to Nano Milli to Giga Pico to Deka Micro to Mega Milli to Micro Centi to Micro Kilo to Yocto Deka to Yocto Peta to Deka Giga to Zepto Centi to Giga Tera to Milli Deci to Centi Tera to Yocto Zetta to Peta Exa to Mega Micro to Zepto None (base unit) to Nano Hecto to Deka Atto to Zetta Yotta to Centi Mega to Zepto Tera to None (base unit) Femto to Micro Giga to Nano Centi to Hecto Atto to Micro Micro to Centi Exa to Zetta Yotta to Giga Kilo to Pico Kilo to Exa Mega to Zetta Deci to Atto Milli to Femto Zepto to Micro Atto to Giga Milli to Nano Zepto to Deci Exa to Zepto Zetta to Deci Peta to Femto Centi to Atto Tera to Kilo Centi to Mega Centi to Yotta Milli to Centi Deci to Zetta Exa to Giga Deka to Giga Peta to Yotta Deci to None (base unit) Deci to Deka Tera to Atto None (base unit) to Peta Mega to Nano Centi to Milli Kilo to Milli None (base unit) to Kilo Mega to Centi Milli to Atto Exa to Pico Zetta to Yocto None (base unit) to Pico Deka to Mega Micro to Atto Mega to Micro Micro to Hecto Giga to Yotta Yocto to Femto None (base unit) to Zetta Exa to Yocto Atto to Kilo Pico to Kilo Hecto to Yotta Micro to Pico None (base unit) to Mega Giga to Milli Tera to Zepto Femto to Atto Micro to Zetta Tera to Nano Micro to Nano Nano to Hecto Yocto to Yotta Deci to Hecto Mega to Milli Tera to Exa Centi to Zepto Zepto to Giga Zetta to Yotta Femto to Hecto Yocto to Hecto Kilo to Mega Pico to Peta Deci to Tera Yocto to Exa Atto to Exa Micro to Tera Zetta to Hecto Zetta to Mega Centi to Deka Mega to None (base unit) Kilo to Deci Milli to Deci Pico to Nano Exa to Peta Tera to Peta Femto to Milli Zepto to Femto Yocto to Milli Micro to Exa Zepto to Pico Pico to Tera Zepto to Yotta Femto to None (base unit) Kilo to Zepto Yotta to Zepto Centi to Nano Peta to Hecto Deci to Yotta Atto to Yotta Atto to Zepto Peta to Micro Giga to Mega Deci to Mega Zetta to Deka Peta to Giga Hecto to Exa Yocto to Deka Nano to Deci Kilo to Yotta Femto to Tera Atto to Mega Kilo to Centi Deci to Kilo Deka to Milli Kilo to Peta Milli to Zetta None (base unit) to Deci Hecto to Micro Micro to Yocto Nano to Femto Mega to Giga Centi to Exa Femto to Yocto Femto to Mega Hecto to Nano Exa to Centi Giga to Tera Yocto to Zetta Femto to Pico Pico to Centi Exa to Micro Giga to Atto Yocto to Micro Zepto to Zetta Kilo to None (base unit) Peta to Mega Yotta to Deci Peta to Yocto Tera to Giga Exa to Deci Centi to Pico Exa to Kilo Femto to Giga Nano to Yotta Centi to Deci Mega to Pico Kilo to Nano Deka to Femto Yocto to None (base unit) Milli to Exa Hecto to Zepto Giga to Pico Hecto to Giga Atto to Milli Yocto to Kilo Atto to None (base unit) Nano to Exa Tera to Hecto Yocto to Giga Atto to Deka Deci to Zepto Nano to Tera Pico to Zetta Milli to Tera Atto to Hecto Femto to Centi Micro to Yotta Zetta to Kilo Centi to Zetta Yocto to Peta Zetta to Nano Kilo to Micro None (base unit) to Milli Zepto to Exa Yotta to Deka Hecto to Femto Milli to Yotta Zetta to Tera Mega to Yotta Zepto to Peta Kilo to Giga Femto to Zepto Deci to Nano Zepto to Kilo Hecto to Peta Femto to Deka Micro to Femto Atto to Peta Zepto to Nano Mega to Deci Yocto to Tera Exa to Femto Nano to Centi Zetta to Femto Hecto to Yocto Yocto to Zepto None (base unit) to Hecto Mega to Yocto Pico to Mega Zepto to Atto Deci to Pico Giga to Exa Hecto to Kilo Tera to Micro Kilo to Atto Yotta to Exa Yocto to Atto Deka to Yotta Centi to None (base unit) Pico to Zepto Atto to Nano Yotta to Yocto Nano to Mega Milli to None (base unit) Giga to Centi Deka to None (base unit) Hecto to Milli Centi to Tera Exa to Milli Zetta to Pico Deka to Atto Hecto to Deci None (base unit) to Giga Deka to Zepto Giga to Kilo Giga to None (base unit) Pico to Deci Micro to Giga None (base unit) to Atto Yocto to Mega Zepto to Centi Femto to Nano Zetta to Centi None (base unit) to Micro Yotta to Micro Zetta to Exa Milli to Deka Peta to Milli Exa to Deka Milli to Pico Zepto to Mega Exa to Tera Deka to Nano Milli to Hecto Deci to Milli Milli to Peta Mega to Exa None (base unit) to Femto Nano to Atto Femto to Deci Hecto to Centi Deka to Pico Deka to Peta Hecto to None (base unit) Peta to Nano Zetta to Micro None (base unit) to Yocto Nano to None (base unit) Exa to None (base unit) Kilo to Deka Hecto to Zetta Pico to Yotta Peta to Zetta Mega to Tera Centi to Peta Femto to Peta Micro to Deci Tera to Yotta Micro to Deka Mega to Femto Pico to Yocto Nano to Zepto Giga to Micro None (base unit) to Zepto Pico to Atto Hecto to Mega Deka to Tera Deka to Micro Nano to Micro Zepto to Hecto Peta to Atto Deka to Hecto Atto to Pico Pico to Giga Nano to Zetta Tera to Centi Nano to Pico Deka to Kilo Centi to Kilo Zepto to Tera Femto to Kilo Tera to Zetta Exa to Hecto Giga to Peta Peta to Exa Atto to Yocto Pico to Micro Yotta to Femto Nano to Milli Nano to Yocto Deka to Zetta Milli to Mega None (base unit) to Deka Femto to Zetta Femto to Yotta Giga to Deka Deka to Deci Micro to Milli Giga to Zetta Exa to Atto Pico to Exa Nano to Giga