Questioned Equal To ≟

Semantic identity and intent

Characters to distinguish

• = — Equals Sign

Use ≟ in the right format

Meaning and usage

Marks an equality that is being tested rather than asserted.

Use it in derivations or exercises to show that the equality still requires verification.

Pronunciation: questioned equal to

Formula examples

How to type Questioned Equal To

Windows

Use Character Map or enter U+225F in a Unicode-aware application.

macOS

Open Character Viewer with Control–Command–Space and search by the symbol name.

Microsoft Word

In an equation, type \stackrel{?}{=} and press Space when Word supports the command.

iPhone and iPad

Copy and paste ≟, or use a math/LaTeX app. The standard iOS keyboard may not expose every mathematical symbol.

Android

Copy and paste ≟, or use a math keyboard or LaTeX editor. Keyboard layouts vary by device and app.

Google Docs

For plain text, paste ≟ or use Insert → Special characters. For structured math, use the equation editor and verify \stackrel{?}{=}.

Excel

Paste ≟ into a cell or use Insert → Symbol when available. Ordinary cells preserve the character but do not interpret LaTeX commands.

Common mistakes

• Define the logical convention before using ≟; proof, programming, and Boolean-algebra sources may assign different precedence or direction.
• For plain text, copy ≟ as U+225F; for structured equations, use \stackrel{?}{=} in math mode. A look-alike glyph or image can break search, accessibility, or parsing when the intended character is Questioned Equal To.

When to use ≟

• Use ≟ in plain text when a Unicode character is appropriate and the destination preserves U+225F.
• Use \stackrel{?}{=} in an equation editor when mathematical spacing or structure matters.
• Define the local meaning when Questioned Equal To is used in comparison, logic with a field-specific convention.

Look-alikes and related characters

• = — Equals Sign

Font and compatibility notes

Glyph shape can vary by font. Verify the code point after copying, and prefer LaTeX or MathML for structured equations.

Review and source notes

Quality tier: specialist

Last reviewed: 2026-07-23

Review method: Catalog review of character identity and notation mappings.

Verified against: Unicode Standard, Unicode mathematical notation guidance, and established LaTeX/MathML syntax.

Reference sources

• The Unicode StandardUnicode Consortium — Character identity, encoding, names, and conformance.
• Unicode Character Code ChartsUnicode Consortium — Code points and official character charts.

Frequently asked questions