Convert Peta to Centi

Peta (P) to Centi (c) 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 P = 1E+17 c

1 Peta = 1E+17 Centi

1 Centi = 1E-17 Peta

1 P in every supported prefix

Conversion chart: Peta to Centi

Conversion table

Peta (P)	Centi (c)
0.01 P	1E+15 c
0.1 P	1E+16 c
1 P	1E+17 c
2 P	2E+17 c
3 P	3E+17 c
5 P	5E+17 c
10 P	1E+18 c
20 P	2E+18 c
50 P	5E+18 c
100 P	1E+19 c
1000 P	1E+20 c

Peta (P)

Definition: An SI prefix denoting a factor of 10¹⁵ — a quadrillion times the base unit.

History: Adopted by the CGPM in 1975 as part of the same extension that introduced exa-, tera having already proven insufficient for emerging large-scale scientific quantities.

Current use: Widely used in computing (petabytes of storage, petaflops of processing power) and in physics for large energy and frequency quantities.

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.

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 Peta → Centi: multiply by 1E+17. For example, 1 P × 1E+17 = 1E+17 c.

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 P equals 1E+17 c. 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 Centi are in 1 Peta?

1 Peta (P) equals exactly 1E+17 Centi (c).

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 Peta to Other Prefixes

Possible Prefix Conversions

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