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What is the opposite of subscript?

Quick answer: The opposite of subscript is superscript. Subscript sits below the baseline (H₂O). Superscript sits above it (x²). Mix them up in a lab report and the meaning changes. Chemistry wants atom counts below the line. Math wants powers and footnote marks above it.

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What is the difference between below and above baseline?

Use this table when you are not sure which style your assignment wants. In HTML, MDN’s <sub> and <sup> mark the same idea for the web. Pick the row that matches your subject, then open the right tool.

TopicSubscript (below)Superscript (above)
PositionBelow the baselineAbove the baseline
Chemistry atom countsH₂O, CO₂, CH₄Wrong if you raise the 2 (H²O)
Math exponentsx₂ (index, not a power)x², 10³, a² + b²
Footnotes₁ (rare)¹, ², ³ after a word
Ion chargesNot used for chargeNa⁺, SO₄²⁻
Unitsv₀ (initial speed)m², cm³
Unicode digit rangeU+2080 to U+2089 (₀–₉)U+2070 to U+2079 (⁰–⁹), plus ² at U+00B2 (chart)
Opposite styleSuperscriptSubscript

When do you use each style in science?

Chemistry and physics lean on lowered digits for counts and indices. Math and units lean on raised digits for powers.

  • Water and carbon dioxide: H₂O, CO₂ (atom counts below the line)
  • Squared and cubed: x², 10³, m² (exponents and area units above the line)
  • Initial values: v₀ (index below), not v⁰
  • Ions: Na⁺ uses a raised charge, not a lowered one

Rule of thumb: atom counts and indices go below; powers, charges, and footnote markers go above.

Same digit, different meaning

Plain textAs subscriptAs superscript
H2OH₂O (correct for water)H²O (wrong for chemistry)
x2x₂ (index)x² (squared)
CO2CO₂CO² (usually wrong)
1₁¹ (footnote)

Can you copy paste both as Unicode?

Yes. Both styles travel as plain characters when you copy Unicode, not when you rely on Word-only formatting. Build lowered formulas on the paste-ready chemistry converter. Build raised exponents and footnotes on the raised-text maker for x².

If one line needs both (for example H₂O next to Na⁺), generate each piece in the correct mode, then paste the pieces together in Docs or Word.

Remember: the opposite of subscript is still superscript. Pick the mode that matches your subject before you copy.

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