Technical information

Symbol
NameSubscript one
Unicode numberU+2081
CategorySubscript and superscriptSubscript numbers
DescriptionThe Unicode character ₁, or U+2081, is known as the "Subscript One". It is a part of the "Superscripts and Subscripts" block and falls under the "Other Number" category in the Unicode standard. This character is typically used in mathematical and scientific texts for notation purposes, such as denoting the base in logarithms, referencing the first element in a sequence, or indicating a specific state or level in physics and chemistry. Its visual appearance is a smaller version of the numeral "1" positioned lower than the normal text line.

Encoding

HTML Entity₁
HTML Entity (hex)₁
URL Escape Code%E2%82%81
UTF-8 (hex)0xE2 0x82 0x81
UTF-8 (binary)11100010:10000010:10000001
UTF-160x2081
UTF-320x00002081

Source Code

C, C++, and Java"\u2081"
CSS Code\2081
JavaScript"\u2081"
Perl\x{2081}
Python 2u"\u2081"
Python 3\u2081
Ruby\u{2081}

Preview

This Unicode character looks like this ₁ in sentence and in bold like this and in italic like this .

Font size:

12px
16px
20px
28px
36px
48px
72px

CSS Property: font-weight

100
200
300
400
500
600
700
800
900

HTML Forms and Input

input
disabled input
input-group
select
button
button

Code examples in HTML and CSS

<span>&#8321;</span>

            
span {
    content: "\2081";
}

The symbol in different fonts

-apple-system
Apple Color Emoji
Arial
BlinkMacSystemFont
Courier New
Georgia
Droid Sans
Helvetica
Noto Sans
Oxygen
Roboto
"Segoe UI"
sans-serif
Segoe UI Emoji
Segoe UI Symbol
system-ui
Times New Roman
Ubuntu
Verdana

References