Deci to Atto Conversion

Convert between Deci and Atto quickly and accurately.

d
a

How to Convert Deci to Atto

Conversion Formula

1 d = 1E+17 a
1 a = 1E-17 d

Example

Convert 15 d to a:

15 d = 15 × 1E+17 a = 2E+18 a

Unit Information

Learn about the prefixes units you're converting between

Deci

d

Definition

A metric prefix equal to 10^-1, representing one-tenth of the base unit.

History/Origin

Introduced in 1795 by the French Academy of Sciences, derived from the Latin word "decimus" meaning tenth.

Current Use

Used in scientific measurements, particularly in decibel measurements and some engineering applications.

Multiplier

0.1

Offset

0

Atto

a

Definition

A metric prefix equal to 10^-18, representing one-quintillionth of the base unit.

History/Origin

Introduced in 1964 by the International Committee for Weights and Measures, derived from the Danish word "atten" meaning eighteen.

Current Use

Used in physics, chemistry, and nanotechnology for extremely small quantities.

Multiplier

1E-18

Offset

0

Deci to Atto Conversion Table

Deci [d] Atto [a]
1 d 1E+17 a
10 d 1E+18 a
25 d 2E+18 a
50 d 5E+18 a
100 d 1E+19 a
0 d 0E+0 a
-10 d -1E+18 a
-40 d -4E+18 a