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

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