Phonokey

Type Math / Science characters

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🌐 English

Type Math / Science symbols with buttons or shortcuts, then copy them wherever you need them.

Type faster with Ctrl shortcuts. For example: each press of Ctrl+A steps through α → ∧. Point at a button to see its shortcut.

Using these characters

x ≤ 5 · a ≠ b · 2 × 3

Distinguish lookalikes: × is multiplication, x is a letter, and − differs from a hyphen. Entering symbols does not calculate an expression. Check the input format required by your destination's equation editor.

Typing with this keyboard

  1. Type ordinary text in the editor and place the cursor where the symbol belongs. Examples available on this keyboard: ⟨ · ⟩ · ⟦ · ⟧ · ⌊ · ⌈.
  2. Click the required character. For characters with an uppercase partner, use Shift or the uppercase setting. Check each button's hint and your settings for shortcuts.
  3. Use the copy-all button, then check letters and marks in the receiving document. Keep important writing in a separate document.

Read more

Unicode reference: characters and combining marks

Symbol and character list
  • ⟨ mathematical left angle bracket
  • ⟩ mathematical right angle bracket
  • ⟦ mathematical left white square bracket
  • ⟧ mathematical right white square bracket
  • ⌊ left floor
  • ⌈ left ceiling
  • ⌋ right floor
  • ⌉ right ceiling
  • ↑ upwards arrow
  • ⇐ leftwards double arrow
  • ← leftwards arrow
  • ↦ rightwards arrow from bar
  • ℰ script capital e
  • ℓ script small l
  • ℒ script capital l
  • ℳ script capital m
  • ⁺𝒮 Apply script style to the preceding letter
  • ’ right single quotation mark
  • “ left double quotation mark
  • ” right double quotation mark
  • – en dash
  • — em dash
  • ½ vulgar fraction one half
  • ¼ vulgar fraction one quarter
  • ∕ division slash
  • ∤ does not divide
  • ⊥ up tack
  • ∥ parallel to
  • ‰ per mille sign
  • ø latin small letter o with stroke
  • ≪ much less-than
  • ≫ much greater-than
  • ~ tilde
  • ⊢ right tack
  • ⊨ true
  • □ white square
  • ◇ white diamond
  • ℂ double-struck capital c
  • ℕ double-struck capital n
  • ℙ double-struck capital p
  • ℚ double-struck capital q
  • ℝ double-struck capital r
  • ℤ double-struck capital z
  • ⁺𝔻 Apply double-struck style to the preceding letter
  • Γ greek capital letter gamma
  • Δ greek capital letter delta
  • Λ greek capital letter lamda
  • Ξ greek capital letter xi
  • Π greek capital letter pi
  • Σ greek capital letter sigma
  • Φ greek capital letter phi
  • Ψ greek capital letter psi
  • Ω greek capital letter omega
  • Å latin capital letter a with ring above
  • ℏ planck constant over two pi
  • ∞ infinity
  • ∘ ring operator
  • ∂ partial differential
  • ∫ integral
  • ∮ contour integral
  • ∯ surface integral
  • ∇ nabla
  • ′ prime
  • ″ double prime
  • ‴ triple prime
  • α Α greek small letter alpha
  • β Β greek small letter beta
  • γ Γ greek small letter gamma
  • δ Δ greek small letter delta
  • ε Ε greek small letter epsilon
  • ζ Ζ greek small letter zeta
  • η Η greek small letter eta
  • θ Θ greek small letter theta
  • κ Κ greek small letter kappa
  • λ Λ greek small letter lamda
  • μ Μ greek small letter mu
  • ν Ν greek small letter nu
  • ξ Ξ greek small letter xi
  • π Π greek small letter pi
  • ρ Ρ greek small letter rho
  • σ Σ greek small letter sigma
  • τ Τ greek small letter tau
  • υ Υ greek small letter upsilon
  • φ Φ greek small letter phi
  • χ Χ greek small letter chi
  • ψ Ψ greek small letter psi
  • ω Ω greek small letter omega
  • ⇒ rightwards double arrow
  • → rightwards arrow
  • ⇔ left right double arrow
  • ↔ left right arrow
  • ∈ element of
  • ∉ not an element of
  • ⊂ subset of
  • ⊆ subset of or equal to
  • ⊄ not a subset of
  • ⊈ neither a subset of nor equal to
  • ⊃ superset of
  • ∪ union
  • ∩ intersection
  • ∖ set minus
  • ∅ empty set
  • ∏ n-ary product
  • ∑ n-ary summation
  • ◌̅ combining overline
  • ◌̂ combining circumflex accent
  • ◌⃗ combining right arrow above
  • ◌̇ combining dot above
  • ◌̈ combining diaeresis
  • ¬ not sign
  • ∨ logical or
  • ∧ logical and
  • ∀ for all
  • ∃ there exists
  • + plus sign
  • − minus sign
  • ± plus-minus sign
  • ⊕ circled plus
  • · middle dot
  • × multiplication sign
  • ⊗ circled times
  • ÷ division sign
  • ² superscript two
  • ³ superscript three
  • √ square root
  • ∛ cube root
  • = equals sign
  • ≠ not equal to
  • ≈ almost equal to
  • ≡ identical to
  • ≝ equal to by definition
  • ≤ less-than or equal to
  • ≥ greater-than or equal to
  • ° degree sign
  • ∠ angle
  • 0 digit zero
  • 1 digit one
  • 2 digit two
  • 3 digit three
  • 4 digit four
  • 5 digit five
  • 6 digit six
  • 7 digit seven
  • 8 digit eight
  • 9 digit nine
  • ( left parenthesis
  • ) right parenthesis
  • [ left square bracket
  • ] right square bracket
  • { left curly bracket
  • } right curly bracket
  • / solidus
  • | vertical line
  • < less-than sign
  • > greater-than sign
  • ␣ space
  • ⁰ superscript zero
  • ¹ superscript one
  • ⁴ superscript four
  • ⁵ superscript five
  • ⁶ superscript six
  • ⁷ superscript seven
  • ⁸ superscript eight
  • ⁹ superscript nine
  • ⁺ superscript plus sign
  • ⁻ superscript minus
  • ⁼ superscript equals sign
  • ⁽ superscript left parenthesis
  • ⁾ superscript right parenthesis
  • ⁿ superscript latin small letter n
  • ⁱ superscript latin small letter i
  • ₀ subscript zero
  • ₁ subscript one
  • ₂ subscript two
  • ₃ subscript three
  • ₄ subscript four
  • ₅ subscript five
  • ₆ subscript six
  • ₇ subscript seven
  • ₈ subscript eight
  • ₉ subscript nine
  • ₊ subscript plus sign
  • ₋ subscript minus
  • ₌ subscript equals sign
  • ₍ subscript left parenthesis
  • ₎ subscript right parenthesis
  • ₙ latin subscript small letter n
  • ᵢ latin subscript small letter i
  • ₓ latin subscript small letter x
  • Θ greek capital letter theta
  • Υ greek capital letter upsilon
  • ι greek small letter iota
  • ο greek small letter omicron
  • ϵ greek lunate epsilon symbol
  • ϑ greek theta symbol
  • ϕ greek phi symbol
  • ϖ greek pi symbol
  • ϱ greek rho symbol
  • ς greek small letter final sigma
  • ∓ minus-or-plus sign
  • ∝ proportional to
  • ∗ asterisk operator
  • ⋅ dot operator
  • ∜ fourth root
  • ∐ n-ary coproduct
  • ⊖ circled minus
  • ⊙ circled dot operator
  • ⊘ circled division slash
  • ≅ approximately equal to
  • ≃ asymptotically equal to
  • ∼ tilde operator
  • ≔ colon equals
  • ≺ precedes
  • ≻ succeeds
  • ≼ precedes or equal to
  • ≽ succeeds or equal to
  • ≮ not less-than
  • ≯ not greater-than
  • ≰ neither less-than nor equal to
  • ≱ neither greater-than nor equal to
  • ∦ not parallel to
  • ⊇ superset of or equal to
  • ⊅ not a superset of
  • ⊊ subset of with not equal to
  • ⊋ superset of with not equal to
  • ∋ contains as member
  • ∄ there does not exist
  • ∁ complement
  • ⊻ xor
  • ⊤ down tack
  • ∴ therefore
  • ∵ because
  • ∎ end of proof
  • ∬ double integral
  • ∭ triple integral
  • ∰ volume integral
  • ⟹ long rightwards double arrow
  • ⟺ long left right double arrow
  • ⇏ rightwards double arrow with stroke
  • ↛ rightwards arrow with stroke
  • ⇌ rightwards harpoon over leftwards harpoon
  • ⟶ long rightwards arrow
  • ↤ leftwards arrow from bar
  • ℵ alef symbol
  • ℶ bet symbol
  • ℘ script capital p
  • ℜ black-letter capital r
  • ℑ black-letter capital i
  • ∆ increment
  • ∡ measured angle
  • ∟ right angle
  • ⌀ diameter sign
  • ‖ double vertical line
  • ℃ degree celsius
  • ℉ degree fahrenheit
  • ⅓ vulgar fraction one third
  • ⅔ vulgar fraction two thirds
  • ⅕ vulgar fraction one fifth
  • ⅙ vulgar fraction one sixth
  • ⅛ vulgar fraction one eighth
  • ⅜ vulgar fraction three eighths
  • ⅝ vulgar fraction five eighths
  • ⅞ vulgar fraction seven eighths
  • ¾ vulgar fraction three quarters
  • xⁿ Apply sup to the preceding letter
  • xₙ Apply sub to the preceding letter