Convert Peta to Pico

Peta (P) to Pico (p) 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+27 p

1 Peta = 1E+27 Pico

1 Pico = 1E-27 Peta

1 P in every supported prefix

Conversion chart: Peta to Pico

Conversion table

Peta (P)	Pico (p)
0.01 P	1E+25 p
0.1 P	1E+26 p
1 P	1E+27 p
2 P	2E+27 p
3 P	3E+27 p
5 P	5E+27 p
10 P	1E+28 p
20 P	2E+28 p
50 P	5E+28 p
100 P	1E+29 p
1000 P	1E+30 p

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.

Pico (p)

Definition: An SI prefix denoting a factor of 10⁻¹² — one trillionth of the base unit.

History: Adopted by the CGPM in 1960 alongside nano-, extending the SI's small-scale prefixes as electronics and physics needed to describe ever-tinier quantities.

Current use: Common in electronics (picofarads for small capacitors) and in describing extremely short time intervals (picoseconds) in laser and telecommunications research.

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 → Pico: multiply by 1E+27. For example, 1 P × 1E+27 = 1E+27 p.

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+27 p. 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 Pico are in 1 Peta?

1 Peta (P) equals exactly 1E+27 Pico (p).

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

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