上標和下標是一個位於基本多文種平面的Unicode區塊，包含了上標和下標數字、數學運算子以及數學和語音學中使用的字母。使用本區塊中的下標和上標可以使任何多項式、化學方程式和某些其他方程式在純文字中得到表示，而不需要使用任何形式的標記式語言，如HTML或TeX。其他的上標字母可以在佔位修飾符號、音標擴展和音標擴展補充區塊中找到，而自ISO 8859-1繼承而來的上標數字1、2和3則位於拉丁字母補充-1區塊中。
Quick Facts 上標和下標 Superscripts and Subscripts, 範圍 ...
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上標和下標
Superscripts and Subscripts[1][2][3]
Unicode Consortium 官方碼表（PDF）
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| |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
B |
C |
D |
E |
F
|
| U+207x
|
⁰
|
ⁱ
|
|
|
⁴
|
⁵
|
⁶
|
⁷
|
⁸
|
⁹
|
⁺
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⁻
|
⁼
|
⁽
|
⁾
|
ⁿ
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| U+208x
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₀
|
₁
|
₂
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₃
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₄
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₅
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₆
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₇
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₈
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₉
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₊
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₋
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₌
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₍
|
₎
|
|
| U+209x
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ₐ
|
ₑ
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ₒ
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ₓ
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ₔ
|
ₕ
|
ₖ
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ₗ
|
ₘ
|
ₙ
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ₚ
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ₛ
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ₜ
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|
|
|
註釋
- 1.^ 依據 Unicode 14.0
- 2.^ 灰色區域表示未分配的碼位
- 3.^ 字元¹（U+00B9），²（U+00B2）與³（U+00B3）位於拉丁字母補充-1
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以下Unicode文件記錄了定義本區塊中特定字元的目的與過程：
More information 版本, 最終碼位[a] ...
| 版本 |
最終碼位[a] |
碼位數 |
L2 ID |
WG2 ID |
文件
|
| 1.0.0 |
U+2070, 2074..208E |
28 |
|
|
（待考）
|
| L2/09-003R |
|
Moore, Lisa, General Category Change (B.14.5), UTC #118 / L2 #215 Minutes, 2009-02-12
|
| 3.2 |
U+2071 |
1 |
L2/00-159 |
|
da Cruz, Frank, Supplemental Terminal Graphics for Unicode, 2000-03-31
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| L2/00-115R2 |
|
Moore, Lisa, Motion 83-M24, Minutes Of UTC Meeting #83, 2000-08-08
|
| L2/00-329 |
N2265 （頁面存檔備份，存於互聯網檔案館） |
Whistler, Ken, Proposal for Terminal Graphic Symbols in the BMP, 2000-09-19
|
| L2/01-050 |
N2253 （頁面存檔備份，存於互聯網檔案館） |
Umamaheswaran, V. S., Resolution M39.20 (Terminal Graphic Symbols), Minutes of the SC2/WG2 meeting in Athens, September 2000, 2001-01-21
|
| L2/09-003R |
|
Moore, Lisa, General Category Change (B.14.5), UTC #118 / L2 #215 Minutes, 2009-02-12
|
| 4.1 |
U+2090..2094 |
5 |
L2/04-077 |
N2705 （頁面存檔備份，存於互聯網檔案館） |
Anderson, Deborah; Everson, Michael, Proposal to encode five Indo-Europeanist phonetic characters in the UCS, 2004-02-02
|
| L2/04-191 |
N2788 （頁面存檔備份，存於互聯網檔案館） |
Anderson, Deborah; Everson, Michael, Proposal to encode six Indo-Europeanist phonetic characters in the UCS, 2004-06-07
|
| L2/04-156R2 |
|
Moore, Lisa, Indo-European laryngeals (A.16), UTC #99 Minutes, 2004-08-13
|
| 6.0 |
U+2095..209C |
8 |
L2/09-028 |
N3571 （頁面存檔備份，存於互聯網檔案館） |
Ruppel, Klaas; Aalto, Tero; Everson, Michael, Proposal to encode additional characters for the Uralic Phonetic Alphabet, 2009-01-27
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| L2/09-195 |
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Iancu, Laurențiu, Proposal to reallocate eight phonetic subscripts, 2009-05-04
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| L2/09-104 |
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Moore, Lisa, Consensus 119-C28, UTC #119 / L2 #216 Minutes, 2009-05-20
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| L2/09-304 |
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Anderson, Deborah, T.4, US Position on PDAM 8, 2009-08-15
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| L2/09-225R |
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Moore, Lisa, B.1.4.4.2, UTC #120 / L2 #217 Minutes, 2009-08-17
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