Table of Contents

Chord Unicode

How to Use

Step 1 — Activate
Step 2 — Type the sequence
Step 3 — Output fires automatically

Unicode Input Method
Complete Chord Reference

Math & Science
Greek Alphabet
Number Sets
Calculus / Analysis
Set Theory
Logic
Geometry
Floor & Ceiling
Currency
Fractions
Legal / IP
Arrows
Typography
Emoji — Faces
Emoji — Gestures
Emoji — Symbols
Emoji — Nature
Emoji — Food & Objects

Tips

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Chord Unicode

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Note: This page intentionally contains Unicode characters (symbols, emoji, and special signs). The "ambiguous Unicode characters" warning shown by Gitea is expected here -- the Unicode content is the subject of this page.

The Chord Unicode system lets you type special characters, symbols, and emoji by typing a short mnemonic sequence -- no copy-paste or OS character picker needed.

How to Use

Step 1 — Activate

Hold FN1, then press Left Alt (CHORD_KEY). You are now in chord mode.

There are two sub-modes:

Mode	How to activate	How it works
Hold mode	Keep `FN1`+`Alt` held down	Type the sequence while holding; output fires on release or exact match
Tap mode	Tap `FN1`+`Alt` and release	Type the sequence within 2 seconds; output fires on exact match

Step 2 — Type the sequence

Type the mnemonic letters (always lowercase — capitalisation does not matter). For example, type d, e, g for the degree sign °.

Backspace deletes the last character of the sequence (does not go to the host).
Enter forces output of the current buffer even if it could be a prefix of a longer sequence.
Escape cancels chord mode without sending anything.
Any key that is not a letter, digit, Backspace, Enter, or Escape cancels chord mode silently.

Step 3 — Output fires automatically

As soon as the buffer matches a chord entry exactly and no longer sequence with different output starts the same way, the character is sent and chord mode exits. If there is ambiguity (the buffer matches one entry but is also the start of a longer one that outputs something different), a 300 ms timer fires after the last keypress and commits the shorter match.

Unicode Input Method

Characters are sent using the Linux unicode input method: Ctrl+Shift+U, then the hex code point, then Enter. This works natively on most Linux desktops (X11 and Wayland with GTK apps). If you are using a different OS, you may need to configure QMK's unicode input mode in the firmware.

Complete Chord Reference

Math & Science

Sequence	Also accepts	Character	Name
`deg`		°	Degree sign
`sqrt`		√	Square root
`sqrd`		²	Superscript 2
`cubd`		³	Superscript 3
`aprx`	`apx`	≈	Almost equal to
`neq`		≠	Not equal to
`lteq`	`lte`	≤	Less than or equal
`gteq`	`gte`	≥	Greater than or equal
`pm`		±	Plus-minus
`div`		÷	Division sign
`times`	`mult`	×	Multiplication sign
`infty`	`inf`	∞	Infinity
`micro`		µ	Micro sign
`equiv`		≡	Congruent / equivalent
`prop`		∝	Proportional to

Greek Alphabet

Sequence	Also accepts	Character	Name
`alpha`		α	Alpha
`beta`		β	Beta
`gamma`		γ	Gamma
`delta`		Δ	Delta (capital)
`epsilon`	`eps`	ε	Epsilon
`zeta`		ζ	Zeta
`eta`		η	Eta
`theta`		θ	Theta
`iota`		ι	Iota
`kappa`		κ	Kappa
`lambda`		λ	Lambda
`mu`		μ	Mu ¹
`nu`		ν	Nu
`xi`		ξ	Xi
`omicron`	`omi`	ο	Omicron
`pi`		π	Pi
`rho`		ρ	Rho
`sigma`		Σ	Sigma (capital)
`tau`		τ	Tau
`upsilon`	`ups`	υ	Upsilon
`phi`		φ	Phi
`chi`		χ	Chi
`psi`		ψ	Psi
`omega`		Ω	Omega (capital)

¹ mu triggers the 300 ms disambiguation timer because mute (🔇) begins with the same letters.

Number Sets

Sequence	Character	Name
`real`	ℝ	Real numbers
`nat`	ℕ	Natural numbers
`intgr`	ℤ	Integers
`rat`	ℚ	Rational numbers
`cmplx`	ℂ	Complex numbers
`aleph`	ℵ	Aleph

Calculus / Analysis

Sequence	Also accepts	Character	Name
`integ`		∫	Integral
`iint`		∬	Double integral
`oint`		∮	Contour integral
`partial`	`prt`	∂	Partial derivative
`nabla`		∇	Nabla / del
`sum`		∑	Summation
`prod`		∏	Product

Set Theory

Sequence	Character	Name
`elem`	∈	Element of
`notin`	∉	Not element of
`sub`	⊂	Subset of ¹
`subeq`	⊆	Subset or equal
`sup`	⊃	Superset of ¹
`supeq`	⊇	Superset or equal
`union`	∪	Union
`inter`	∩	Intersection
`empty`	∅	Empty set

¹ sub and sup trigger the 300 ms disambiguation timer because subeq / supeq begin with the same letters.

Logic

Sequence	Character	Name
`forall`	∀	For all
`exists`	∃	There exists
`nexist`	∄	Does not exist
`land`	∧	Logical and
`lor`	∨	Logical or
`xor`	⊕	Exclusive or
`impl`	⟹	Implies
`iff`	⟺	If and only if

Geometry

Sequence	Also accepts	Character	Name
`angle`	`ang`	∠	Angle
`perp`		⊥	Perpendicular
`parl`		∥	Parallel

Floor & Ceiling

Sequence	Character	Name
`lfl`	⌊	Left floor bracket
`rfl`	⌋	Right floor bracket
`lcl`	⌈	Left ceiling bracket
`rcl`	⌉	Right ceiling bracket

Currency

Sequence	Character	Name
`euro`	€	Euro
`pound`	£	Pound sterling
`yen`	¥	Yen / Yuan
`cent`	¢	Cent sign

Fractions

Sequence	Character
`half`	½	One half
`qtr`	¼	One quarter
`3qtr`	¾	Three quarters

Legal / IP

Sequence	Character	Name
`copy`	©	Copyright
`reg`	®	Registered trademark
`tm`	™	Trademark

Arrows

Sequence	Character	Direction
`arrl`	←	Left
`arrr`	→	Right
`arru`	↑	Up
`arrd`	↓	Down
`arrh`	↔	Left ↔ right
`arrv`	↕	Up ↕ down
`dbl`	⇒	Double right arrow

Typography

Sequence	Character	Name
`bull`	•	Bullet
`mdash`	—	Em dash
`ndash`	–	En dash
`ellip`	…	Horizontal ellipsis

Emoji — Faces

Sequence	Emoji	Name
`smile`	🙂	Slightly smiling
`grin`	😁	Beaming / grinning
`lol`	😂	Tears of joy
`cry`	😭	Loudly crying
`sad`	🙁	Slightly frowning
`wink`	😉	Winking
`cool`	😎	Sunglasses
`think`	🤔	Thinking
`shrug`	🤷	Shrugging
`ugh`	😤	Steam from nose
`wow`	😮	Open mouth
`zip`	🤐	Zipper mouth
`nerdy`	🤓	Nerd

Emoji — Gestures

Sequence	Emoji	Name
`thup`	👍	Thumbs up
`thdn`	👎	Thumbs down
`wave`	👋	Waving hand
`clap`	👏	Clapping
`fist`	✊	Raised fist
`pray`	🙏	Folded hands
`ok`	👌	OK hand
`point`	👉	Pointing right

Emoji — Symbols

Sequence	Emoji	Name
`heart`	❤	Heart
`check`	✓	Check mark
`cross`	✗	Ballot X
`warn`	⚠	Warning
`stop`	🛑	Stop sign
`yes`	✅	Heavy check mark
`nope`	❌	Cross mark
`ques`	❓	Question mark
`excl`	❗	Exclamation mark
`help`	ℹ	Information
`fire`	🔥	Fire
`star`	⭐	Star
`tada`	🎉	Party popper
`100`	💯	Hundred points
`zzz`	💤	Sleeping / zzz
`skull`	💀	Skull
`poop`	💩	Pile of poo
`eyes`	👀	Eyes
`bell`	🔔	Bell
`mute`	🔇	Muted speaker
`loud`	🔊	Loud speaker
`bulb`	💡	Light bulb
`tack`	📌	Pushpin
`key`	🔑	Key
`lock`	🔒	Lock
`robot`	🤖	Robot
`alien`	👽	Alien

Emoji — Nature

Sequence	Emoji	Name
`sun`	☀	Sun
`moon`	🌙	Crescent moon
`snow`	❄	Snowflake
`rain`	🌧	Rain cloud
`bolt`	⚡	Lightning
`cat`	🐱	Cat face
`dog`	🐶	Dog face
`fox`	🦊	Fox face
`bear`	🐻	Bear face

Emoji — Food & Objects

Sequence	Emoji	Name
`coffee`	☕	Hot beverage
`beer`	🍺	Beer mug
`pizza`	🍕	Pizza
`cake`	🎂	Birthday cake
`gift`	🎁	Wrapped gift
`mike`	🎤	Microphone
`mus`	🎵	Musical note
`phone`	📱	Mobile phone
`pc`	💻	Laptop
`book`	📖	Open book
`mail`	📧	E-mail
`money`	💰	Money bag
`gem`	💎	Gem stone
`sword`	⚔	Crossed swords
`shield`	🛡	Shield
`rocket`	🚀	Rocket
`tools`	🔧	Wrench / tools
`trash`	🗑	Wastebasket
`clock`	🕐	Clock
`hour`	⏳	Hourglass

Tips

Aliases: Some characters have multiple valid sequences (e.g. mult and times both produce ×). Both sequences work equally well.
Disambiguation timer: If your sequence is both a complete match and the start of a longer one with different output (e.g. hypothetically lte and lteq), just wait 300 ms after your last keypress and the shorter match fires. Or press Enter to confirm immediately.
Timeout: In tap mode, chord input is cancelled if you stop typing for 2 seconds.
Mistakes: Press Backspace to delete the last character, or Escape to cancel completely.