Convert Kilo to Peta

Kilo (k) 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 k = 1E-12 P

1 Kilo = 1E-12 Peta

1 Peta = 1E+12 Kilo

1 k in every supported prefix

Conversion chart: Kilo to Peta

Conversion table

Kilo (k)	Peta (P)
0.01 k	1E-14 P
0.1 k	1E-13 P
1 k	1E-12 P
2 k	2E-12 P
3 k	3E-12 P
5 k	5E-12 P
10 k	1E-11 P
20 k	2E-11 P
50 k	5E-11 P
100 k	1E-10 P
1000 k	1E-09 P

Kilo (k)

Definition: An SI prefix denoting a factor of 10³ — one thousand times the base unit.

History: One of the original six metric prefixes adopted by the French Academy of Sciences in 1795, alongside hecto-, deka-, deci-, centi-, and milli-.

Current use: The most familiar SI prefix in daily life — kilograms, kilometers, and kilowatts are all in routine common use worldwide.

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 Kilo → Peta: multiply by 1E-12. For example, 1 k × 1E-12 = 1E-12 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 k equals 1E-12 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 Kilo?

1 Kilo (k) equals exactly 1E-12 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 Kilo to Other Prefixes

Possible Prefix Conversions

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