Superscripts and Subscripts

Superscripts and Subscripts
Range	U+2070..U+209F; (48 code points)
Plane	BMP
Scripts	Latin (15 char.); Common (27 char.)
Assigned	42 code points
Unused	6 reserved code points
Unicode version history
1.0.0 (1991)	28 (+28)
3.2 (2002)	29 (+1)
4.1 (2005)	34 (+5)
6.0 (2010)	42 (+8)
	Note:

Superscripts and Subscripts is a Unicode block containing superscript and subscript numerals, mathematical operators, and letters used in mathematics and phonetics. Other superscript letters can be found in the Spacing Modifier Letters, Phonetic Extensions and Phonetic Extensions Supplement blocks, while the superscript 1, 2, and 3, inherited from ISO 8859-1, were included in the Latin-1 Supplement block.

Superscripts and Subscripts^[1]^[2]^[3] Official Unicode Consortium code chart (PDF)
	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	⁺	⁻	⁼	⁽	⁾	ⁿ
U+208x	₀	₁	₂	₃	₄	₅	₆	₇	₈	₉	₊	₋	₌	₍	₎
U+209x	ₐ	ₑ	ₒ	ₓ	ₔ	ₕ	ₖ	ₗ	ₘ	ₙ	ₚ	ₛ	ₜ
Notes 1.^ As of Unicode version 8.0 2.^ Grey areas indicate non-assigned code points 3.^ Refer to the Latin-1 Supplement Unicode block for characters ¹ (U+00B9), ² (U+00B2) and ³ (U+00B3)

References

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Superscripts and Subscripts
Range	U+2070..U+209F (48 code points)
Plane	BMP
Scripts	Latin (15 char.) Common (27 char.)
Assigned	42 code points
Unused	6 reserved code points
Unicode version history

1.0.0 (1991)	28 (+28)
3.2 (2002)	29 (+1)
4.1 (2005)	34 (+5)
6.0 (2010)	42 (+8)

Note: ^[1]^[2]