Convert Giga to Peta

Giga (G) to Peta (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 G = 1E-06 P

1 Giga = 1E-06 Peta

1 Peta = 1000000 Giga

1 G in every supported prefix

Conversion chart: Giga to Peta

Conversion table

Giga (G)	Peta (P)
0.01 G	1E-08 P
0.1 G	1E-07 P
1 G	1E-06 P
2 G	2E-06 P
3 G	3E-06 P
5 G	5E-06 P
10 G	1E-05 P
20 G	2E-05 P
50 G	5E-05 P
100 G	0.0001 P
1000 G	0.001 P

Giga (G)

Definition: An SI prefix denoting a factor of 10⁹ — a billion times the base unit.

History: Adopted by the CGPM in 1960, giving science and engineering a standard name for the billion-scale quantities that were becoming common in physics and electronics.

Current use: Everywhere in modern technology — gigabytes of storage, gigahertz processor clock speeds, and gigawatts of power-plant output.

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.

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 Giga → Peta: multiply by 1E-06. For example, 1 G × 1E-06 = 1E-06 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 G equals 1E-06 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 Peta are in 1 Giga?

1 Giga (G) equals exactly 1E-06 Peta (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 Giga to Other Prefixes

Possible Prefix Conversions

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