Convert Roman Numerals to Atto Online

About Roman Numerals to Atto Conversion

This converter converts Roman Numerals to Atto (a, ×10⁻¹⁸). One Roman Numerals equals 999999999999999900 Atto (a, ×10⁻¹⁸).

Formula:

1 Roman Numerals = 999999999999999900 Atto (a, ×10⁻¹⁸)

Example:

1  = 999999999999999900 a, ×10⁻¹⁸
2  = 1999999999999999700 a, ×10⁻¹⁸

Roman Numerals to Atto (a, ×10⁻¹⁸) Conversion

Convert Roman to Atto using the exact conversion factor. This page provides the formula, worked examples, and real-world use cases for practical understanding.

Conversion Formula

Atto = Roman × 1.000000e+18

To convert Roman Numerals to Atto (a, ×10⁻¹⁸), multiply the value by 1.000000e+18. This factor is obtained by comparing their exact meter definitions.

Worked Example

Convert 1 roman to atto.

  • Step 1: Write the formula: atto = roman × 1.000000e+18
  • Step 2: Substitute: 1 × 1.000000e+18
  • Step 3: Result: 1.000000e+18 atto
So, 1 roman = 1.000000e+18 atto.

About the Units

Roman Numerals

One Roman Numerals equals 1.000000e+18 Atto (a, ×10⁻¹⁸)

A widely used unit across scientific, engineering, and measurement contexts.

Atto (a, ×10⁻¹⁸)

One Atto (a, ×10⁻¹⁸) equals 1.000000e-18 Roman Numerals

Common in nanotechnology, optical physics, and semiconductor design.

Where This Conversion Is Used

  • Converting values from Roman to Atto for engineering or scientific workflows.
  • Used when normalizing mixed-unit datasets requiring consistent Atto representation.
  • Applied when comparing different measurement systems across tools and documents.
  • Used in nanotechnology, material science, and quantum-level research.

Frequently Asked Questions

How many Atto (a, ×10⁻¹⁸) are in 1 Roman Numerals?

1 roman = 1.000000e+18 atto.

What is the formula for converting Roman Numerals to Atto (a, ×10⁻¹⁸)?

Multiply the roman value by 1.000000e+18.

Can I reverse the conversion?

Yes. 1 atto = 1.000000e-18 roman.

Conclusion

By applying the conversion factor shown above, you can reliably convert Roman Numerals to Atto (a, ×10⁻¹⁸) for use in scientific analysis, engineering calculations, academic work, or daily measurements.

Quick Links for Unit Converters

Convert Roman Numerals to Other Units

Roman Numerals to One

1 roman = 1 one

1 Roman Numerals = 1 One (Base Unit)

1 roman-numerals equals 1 one-base-unit.

Roman Numerals to Pair

1 roman = 0.5 pair

1 Roman Numerals = 0.5 Pair

1 roman-numerals equals 0.5 pair.

Roman Numerals to Trio

1 roman = 0.3333333333333333 trio

1 Roman Numerals = 0.3333333333333333 Trio

1 roman-numerals equals 0.3333333333333333 trio.

Roman Numerals to Quadruple

1 roman = 0.25 quadruple

1 Roman Numerals = 0.25 Quadruple

1 roman-numerals equals 0.25 quadruple.

Roman Numerals to Quintuple

1 roman = 0.2 quintuple

1 Roman Numerals = 0.2 Quintuple

1 roman-numerals equals 0.2 quintuple.

Roman Numerals to Dozen

1 roman = 0.08333333333333333 dozen

1 Roman Numerals = 0.08333333333333333 Dozen (dz)

1 roman-numerals equals 0.08333333333333333 dozen.

Roman Numerals to Score

1 roman = 0.05 score

1 Roman Numerals = 0.05 Score

1 roman-numerals equals 0.05 score.

Roman Numerals to Gross

1 roman = 0.006944444444444444 gross

1 Roman Numerals = 0.006944444444444444 Gross

1 roman-numerals equals 0.006944444444444444 gross.

Roman Numerals to Great Gross

1 roman = 0.0005787037037037037 great-gross

1 Roman Numerals = 0.0005787037037037037 Great Gross

1 roman-numerals equals 0.0005787037037037037 great-gross.

Roman Numerals to Hundred

1 roman = 0.01 hundred

1 Roman Numerals = 0.01 Hundred

1 roman-numerals equals 0.01 hundred.

Roman Numerals to Thousand

1 roman = 0.001 thousand

1 Roman Numerals = 0.001 Thousand (K)

1 roman-numerals equals 0.001 thousand.

Roman Numerals to Million

1 roman = 0.000001 million

1 Roman Numerals = 0.000001 Million (M)

1 roman-numerals equals 0.000001 million.

Roman Numerals to Billion

1 roman = 1e-9 billion

1 Roman Numerals = 1e-9 Billion (B)

1 roman-numerals equals 1e-9 billion.

Roman Numerals to Trillion

1 roman = 1e-12 trillion

1 Roman Numerals = 1e-12 Trillion (T)

1 roman-numerals equals 1e-12 trillion.

Roman Numerals to Quadrillion

1 roman = 1e-15 quadrillion

1 Roman Numerals = 1e-15 Quadrillion (P)

1 roman-numerals equals 1e-15 quadrillion.

Roman Numerals to Quintillion

1 roman = 1e-18 quintillion

1 Roman Numerals = 1e-18 Quintillion (E)

1 roman-numerals equals 1e-18 quintillion.

Roman Numerals to Sextillion

1 roman = 1e-21 sextillion

1 Roman Numerals = 1e-21 Sextillion

1 roman-numerals equals 1e-21 sextillion.

Roman Numerals to Septillion

1 roman = 1.0000000000000001e-24 septillion

1 Roman Numerals = 1.0000000000000001e-24 Septillion

1 roman-numerals equals 1.0000000000000001e-24 septillion.

Roman Numerals to Octillion

1 roman = 1e-27 octillion

1 Roman Numerals = 1e-27 Octillion

1 roman-numerals equals 1e-27 octillion.

Roman Numerals to Nonillion

1 roman = 9.999999999999999e-31 nonillion

1 Roman Numerals = 9.999999999999999e-31 Nonillion

1 roman-numerals equals 9.999999999999999e-31 nonillion.

Roman Numerals to Decillion

1 roman = 1e-33 decillion

1 Roman Numerals = 1e-33 Decillion

1 roman-numerals equals 1e-33 decillion.

Roman Numerals to Googol

1 roman = 1e-100 googol

1 Roman Numerals = 1e-100 Googol

1 roman-numerals equals 1e-100 googol.

Roman Numerals to Kilo

1 roman = 0.001 kilo

1 Roman Numerals = 0.001 Kilo (k, ×10³)

1 roman-numerals equals 0.001 kilo.

Roman Numerals to Mega

1 roman = 0.000001 mega

1 Roman Numerals = 0.000001 Mega (M, ×10⁶)

1 roman-numerals equals 0.000001 mega.

Roman Numerals to Giga

1 roman = 1e-9 giga

1 Roman Numerals = 1e-9 Giga (G, ×10⁹)

1 roman-numerals equals 1e-9 giga.

Roman Numerals to Tera

1 roman = 1e-12 tera

1 Roman Numerals = 1e-12 Tera (T, ×10¹²)

1 roman-numerals equals 1e-12 tera.

Roman Numerals to Peta

1 roman = 1e-15 peta

1 Roman Numerals = 1e-15 Peta (P, ×10¹⁵)

1 roman-numerals equals 1e-15 peta.

Roman Numerals to Exa

1 roman = 1e-18 exa

1 Roman Numerals = 1e-18 Exa (E, ×10¹⁸)

1 roman-numerals equals 1e-18 exa.

Roman Numerals to Zetta

1 roman = 1e-21 zetta

1 Roman Numerals = 1e-21 Zetta (Z, ×10²¹)

1 roman-numerals equals 1e-21 zetta.

Roman Numerals to Yotta

1 roman = 1.0000000000000001e-24 yotta

1 Roman Numerals = 1.0000000000000001e-24 Yotta (Y, ×10²⁴)

1 roman-numerals equals 1.0000000000000001e-24 yotta.

Roman Numerals to Milli

1 roman = 1000 milli

1 Roman Numerals = 1000 Millis (m, ×10⁻³)

1 roman-numerals equals 1000 millis.

Roman Numerals to Micro

1 roman = 1000000 micro

1 Roman Numerals = 1000000 Microes (μ, ×10⁻⁶)

1 roman-numerals equals 1000000 microes.

Roman Numerals to Nano

1 roman = 999999999.9999999 nano

1 Roman Numerals = 999999999.9999999 Nanoes (n, ×10⁻⁹)

1 roman-numerals equals 999999999.9999999 nanoes.

Roman Numerals to Pico

1 roman = 1000000000000 pico

1 Roman Numerals = 1000000000000 Picoes (p, ×10⁻¹²)

1 roman-numerals equals 1000000000000 picoes.

Roman Numerals to Femto

1 roman = 999999999999999.9 femto

1 Roman Numerals = 999999999999999.9 Femtoes (f, ×10⁻¹⁵)

1 roman-numerals equals 999999999999999.9 femtoes.

Roman Numerals to Atto

1 roman = 999999999999999900 atto

1 Roman Numerals = 999999999999999900 Attoes (a, ×10⁻¹⁸)

1 roman-numerals equals 999999999999999900 attoes.

Roman Numerals to Zepto

1 roman = 1.0000000000000001e+21 zepto

1 Roman Numerals = 1.0000000000000001e+21 Zeptoes (z, ×10⁻²¹)

1 roman-numerals equals 1.0000000000000001e+21 zeptoes.

Roman Numerals to Yocto

1 roman = 1.0000000000000001e+24 yocto

1 Roman Numerals = 1.0000000000000001e+24 Yoctoes (y, ×10⁻²⁴)

1 roman-numerals equals 1.0000000000000001e+24 yoctoes.

Roman Numerals to Decimal

1 roman = 1 decimal

1 Roman Numerals = 1 Decimal

1 roman-numerals equals 1 decimal.

Roman Numerals to Binary

1 roman = 1 binary

1 Roman Numerals = 1 Binary

1 roman-numerals equals 1 binary.

Roman Numerals to Octal

1 roman = 1 octal

1 Roman Numerals = 1 Octal

1 roman-numerals equals 1 octal.

Roman Numerals to Hexadecimal

1 roman = 1 hex

1 Roman Numerals = 1 Hexadecimal

1 roman-numerals equals 1 hexadecimal.

Roman Numerals to Scientific Notation

1 roman = 1 scientific

1 Roman Numerals = 1 Scientific Notation

1 roman-numerals equals 1 scientific-notation.

Roman Numerals to Percentage

1 roman = 100 percentage

1 Roman Numerals = 100 Percentages

1 roman-numerals equals 100 percentages.

Roman Numerals to Parts Per Million

1 roman = 1000000 ppm

1 Roman Numerals = 1000000 Parts Per Millions (PPM)

1 roman-numerals equals 1000000 parts-per-millions.

Roman Numerals to Parts Per Billion

1 roman = 999999999.9999999 ppb

1 Roman Numerals = 999999999.9999999 Parts Per Billions (PPB)

1 roman-numerals equals 999999999.9999999 parts-per-billions.

Convert Atto to Other Units

Atto to One

1 atto = 1e-18 one

1 Atto (a, ×10⁻¹⁸) = 1e-18 One (Base Unit)

1 atto equals 1e-18 one-base-unit.

Atto to Pair

1 atto = 5e-19 pair

1 Atto (a, ×10⁻¹⁸) = 5e-19 Pair

1 atto equals 5e-19 pair.

Atto to Trio

1 atto = 3.3333333333333334e-19 trio

1 Atto (a, ×10⁻¹⁸) = 3.3333333333333334e-19 Trio

1 atto equals 3.3333333333333334e-19 trio.

Atto to Quadruple

1 atto = 2.5e-19 quadruple

1 Atto (a, ×10⁻¹⁸) = 2.5e-19 Quadruple

1 atto equals 2.5e-19 quadruple.

Atto to Quintuple

1 atto = 2.0000000000000002e-19 quintuple

1 Atto (a, ×10⁻¹⁸) = 2.0000000000000002e-19 Quintuple

1 atto equals 2.0000000000000002e-19 quintuple.

Atto to Dozen

1 atto = 8.333333333333334e-20 dozen

1 Atto (a, ×10⁻¹⁸) = 8.333333333333334e-20 Dozen (dz)

1 atto equals 8.333333333333334e-20 dozen.

Atto to Score

1 atto = 5.0000000000000005e-20 score

1 Atto (a, ×10⁻¹⁸) = 5.0000000000000005e-20 Score

1 atto equals 5.0000000000000005e-20 score.

Atto to Gross

1 atto = 6.944444444444446e-21 gross

1 Atto (a, ×10⁻¹⁸) = 6.944444444444446e-21 Gross

1 atto equals 6.944444444444446e-21 gross.

Atto to Great Gross

1 atto = 5.787037037037037e-22 great-gross

1 Atto (a, ×10⁻¹⁸) = 5.787037037037037e-22 Great Gross

1 atto equals 5.787037037037037e-22 great-gross.

Atto to Hundred

1 atto = 1.0000000000000001e-20 hundred

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-20 Hundred

1 atto equals 1.0000000000000001e-20 hundred.

Atto to Thousand

1 atto = 1.0000000000000001e-21 thousand

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-21 Thousand (K)

1 atto equals 1.0000000000000001e-21 thousand.

Atto to Million

1 atto = 1.0000000000000001e-24 million

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-24 Million (M)

1 atto equals 1.0000000000000001e-24 million.

Atto to Billion

1 atto = 1e-27 billion

1 Atto (a, ×10⁻¹⁸) = 1e-27 Billion (B)

1 atto equals 1e-27 billion.

Atto to Trillion

1 atto = 1e-30 trillion

1 Atto (a, ×10⁻¹⁸) = 1e-30 Trillion (T)

1 atto equals 1e-30 trillion.

Atto to Quadrillion

1 atto = 1e-33 quadrillion

1 Atto (a, ×10⁻¹⁸) = 1e-33 Quadrillion (P)

1 atto equals 1e-33 quadrillion.

Atto to Quintillion

1 atto = 1.0000000000000001e-36 quintillion

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-36 Quintillion (E)

1 atto equals 1.0000000000000001e-36 quintillion.

Atto to Sextillion

1 atto = 1.0000000000000001e-39 sextillion

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-39 Sextillion

1 atto equals 1.0000000000000001e-39 sextillion.

Atto to Septillion

1 atto = 1e-42 septillion

1 Atto (a, ×10⁻¹⁸) = 1e-42 Septillion

1 atto equals 1e-42 septillion.

Atto to Octillion

1 atto = 1e-45 octillion

1 Atto (a, ×10⁻¹⁸) = 1e-45 Octillion

1 atto equals 1e-45 octillion.

Atto to Nonillion

1 atto = 1.0000000000000001e-48 nonillion

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-48 Nonillion

1 atto equals 1.0000000000000001e-48 nonillion.

Atto to Decillion

1 atto = 1.0000000000000002e-51 decillion

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000002e-51 Decillion

1 atto equals 1.0000000000000002e-51 decillion.

Atto to Googol

1 atto = 1e-118 googol

1 Atto (a, ×10⁻¹⁸) = 1e-118 Googol

1 atto equals 1e-118 googol.

Atto to Kilo

1 atto = 1.0000000000000001e-21 kilo

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-21 Kilo (k, ×10³)

1 atto equals 1.0000000000000001e-21 kilo.

Atto to Mega

1 atto = 1.0000000000000001e-24 mega

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-24 Mega (M, ×10⁶)

1 atto equals 1.0000000000000001e-24 mega.

Atto to Giga

1 atto = 1e-27 giga

1 Atto (a, ×10⁻¹⁸) = 1e-27 Giga (G, ×10⁹)

1 atto equals 1e-27 giga.

Atto to Tera

1 atto = 1e-30 tera

1 Atto (a, ×10⁻¹⁸) = 1e-30 Tera (T, ×10¹²)

1 atto equals 1e-30 tera.

Atto to Peta

1 atto = 1e-33 peta

1 Atto (a, ×10⁻¹⁸) = 1e-33 Peta (P, ×10¹⁵)

1 atto equals 1e-33 peta.

Atto to Exa

1 atto = 1.0000000000000001e-36 exa

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-36 Exa (E, ×10¹⁸)

1 atto equals 1.0000000000000001e-36 exa.

Atto to Zetta

1 atto = 1.0000000000000001e-39 zetta

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-39 Zetta (Z, ×10²¹)

1 atto equals 1.0000000000000001e-39 zetta.

Atto to Yotta

1 atto = 1e-42 yotta

1 Atto (a, ×10⁻¹⁸) = 1e-42 Yotta (Y, ×10²⁴)

1 atto equals 1e-42 yotta.

Atto to Milli

1 atto = 1e-15 milli

1 Atto (a, ×10⁻¹⁸) = 1e-15 Milli (m, ×10⁻³)

1 atto equals 1e-15 milli.

Atto to Micro

1 atto = 1.0000000000000002e-12 micro

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000002e-12 Micro (μ, ×10⁻⁶)

1 atto equals 1.0000000000000002e-12 micro.

Atto to Nano

1 atto = 1e-9 nano

1 Atto (a, ×10⁻¹⁸) = 1e-9 Nano (n, ×10⁻⁹)

1 atto equals 1e-9 nano.

Atto to Pico

1 atto = 0.0000010000000000000002 pico

1 Atto (a, ×10⁻¹⁸) = 0.0000010000000000000002 Pico (p, ×10⁻¹²)

1 atto equals 0.0000010000000000000002 pico.

Atto to Femto

1 atto = 0.001 femto

1 Atto (a, ×10⁻¹⁸) = 0.001 Femto (f, ×10⁻¹⁵)

1 atto equals 0.001 femto.

Atto to Zepto

1 atto = 1000.0000000000001 zepto

1 Atto (a, ×10⁻¹⁸) = 1000.0000000000001 Zeptoes (z, ×10⁻²¹)

1 atto equals 1000.0000000000001 zeptoes.

Atto to Yocto

1 atto = 1000000.0000000001 yocto

1 Atto (a, ×10⁻¹⁸) = 1000000.0000000001 Yoctoes (y, ×10⁻²⁴)

1 atto equals 1000000.0000000001 yoctoes.

Atto to Decimal

1 atto = 1e-18 decimal

1 Atto (a, ×10⁻¹⁸) = 1e-18 Decimal

1 atto equals 1e-18 decimal.

Atto to Binary

1 atto = 1e-18 binary

1 Atto (a, ×10⁻¹⁸) = 1e-18 Binary

1 atto equals 1e-18 binary.

Atto to Octal

1 atto = 1e-18 octal

1 Atto (a, ×10⁻¹⁸) = 1e-18 Octal

1 atto equals 1e-18 octal.

Atto to Hexadecimal

1 atto = 1e-18 hex

1 Atto (a, ×10⁻¹⁸) = 1e-18 Hexadecimal

1 atto equals 1e-18 hexadecimal.

Atto to Scientific Notation

1 atto = 1e-18 scientific

1 Atto (a, ×10⁻¹⁸) = 1e-18 Scientific Notation

1 atto equals 1e-18 scientific-notation.

Atto to Roman Numerals

1 atto = 1e-18 roman

1 Atto (a, ×10⁻¹⁸) = 1e-18 Roman Numerals

1 atto equals 1e-18 roman-numerals.

Atto to Percentage

1 atto = 1.0000000000000001e-16 percentage

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000001e-16 Percentage

1 atto equals 1.0000000000000001e-16 percentage.

Atto to Parts Per Million

1 atto = 1.0000000000000002e-12 ppm

1 Atto (a, ×10⁻¹⁸) = 1.0000000000000002e-12 Parts Per Million (PPM)

1 atto equals 1.0000000000000002e-12 parts-per-million.

Atto to Parts Per Billion

1 atto = 1e-9 ppb

1 Atto (a, ×10⁻¹⁸) = 1e-9 Parts Per Billion (PPB)

1 atto equals 1e-9 parts-per-billion.