Arithmetic Symbols (± × ÷ √ ∞) — Copy & Paste

Essential arithmetic and algebraic symbols used in engineering calculations and scientific writing. Copy any symbol instantly with its Unicode, HTML and LaTeX reference.

Symbols — copy & reference

Plus-minus

Indicates a value can be either added or subtracted. Common in tolerances, measurements and statistics.

U+00B1 ± \pm

Multiplication sign

Preferred over ‘x’ in formal engineering and scientific writing.

U+00D7 × \times

Division sign

Standard division operator in elementary and some engineering contexts.

U+00F7 ÷ \div

√

Square root

Radical symbol for square root. Fundamental in geometry, physics and structural calculations.

U+221A √ \sqrt{}

∛

Cube root

Denotes the cube root of a value. Used in volume calculations and material science.

U+221B ∛ \sqrt[3]{}

∜

Fourth root

Denotes the fourth root. Less common but appears in advanced structural and vibration analysis.

U+221C ∜ \sqrt[4]{}

∞

Infinity

Represents an unbounded quantity. Used in limits, integrals and asymptotic behaviour.

U+221E ∞ \infty

⁻¹

Inverse / Reciprocal

Superscript −1 denotes the inverse of a function or matrix, or the reciprocal of a scalar.

U+207B U+00B9 ⁻¹ ^{-1}

∓

Minus-plus

The complement of ±. Used when two signs appear together and vary oppositely.

U+2213 ∓ \mp

How to insert in applications

Windows

Best option: copy from this page.
Or Win + . to open emoji & symbols panel.

macOS

⌃⌘Space → Character Viewer → search by name

Microsoft Word

Insert → Symbol → More Symbols → find by Unicode

Google Docs

Insert → Special characters → search by name or draw

LaTeX

Use command in math mode: $ … $

HTML

Use HTML entity or decimal code directly in markup

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