'Colemak mod DH full' computer keyboard layout

Canonical namecolemak-mod-DH-full.en.ansi
LanguageEnglish
Form factorSlab : ANSI
'Author'Steve Pugh
Author data may not be correct, we're working on it.
Keys horizontally staggeredYes
Letters on thumb (lower and upper case)0
Avoids AltGr for standard charactersYes
Does not move non-character keys (ANSI/ISO)Yes
Maintains QWERTY 'shift' pairsYes
Maintains QWERTY top row (ANSI/ISO)Yes
Uppercase on same keyYes
Conventional home keys, fingering, Space, Enter, Shifts, AltGrNo
Maintains QWERTY ZXCVNo
Maintains Colemak punctuationYes

Click image for larger view

colemak-mod-DH-full.en.ansi


Download the Keyboard Layout Analyzer .json file.

Changes from QWERTY (1873)

colemak-mod-DH-full.en.ansi

Changes from Dvorak (1936)

colemak-mod-DH-full.en.ansi

Colemak mod DH full is most similar to

LayoutScore

Colemak mod DH full is least similar to

LayoutScore

Scores

Scores are percentages relative to the best layout for each metric.
MetricPercentage
Finger-based metrics58.86
Word-based metrics95.46
English58.33
Code59.18
Proglish60.68
Words metric for no same-finger95.46
Overall score71.06

All layouts (443)

MetricLowestLowest scorecolemak-mod-DH-full.en.ansi scoreHighestHighest score
Fingersnoel.en.ansi27.83
maks-ex.en.ergodox98.54
Wordsnoel.en.ansi17.40
whorf.en.ansi100.00
Averagenoel.en.ansi24.35
maks-ex.en.ergodox98.08

All ANSI (330)

MetricLowestLowest scorecolemak-mod-DH-full.en.ansi scoreHighestHighest score
Fingersnoel.en.ansi27.83
full-maks-minimo.en.ansi78.62
Wordsnoel.en.ansi17.40
whorf.en.ansi100.00
Averagenoel.en.ansi24.35
full-maks-minimo.en.ansi83.79

Unconventional ANSI (77)

MetricLowestLowest scorecolemak-mod-DH-full.en.ansi scoreHighestHighest score
Fingersqwerty-typewriter.en.ansi33.82
full-maks-minimo.en.ansi78.62
Wordsdvorak-mod-elazharty-azmi-suliman-mod-ian.en.ansi39.22
hieaqmtsrn.en.ansi96.66
Averagearmel-refingered-ian.en.ansi39.72
full-maks-minimo.en.ansi83.79

Finger based metrics

Finger based metrics, as determined with Keyboard Layout Analyzer, using KLAnext scoring model, and then normalised to ANSI QWERTY = 100.
Lower is better.

English

RankLayoutScoreDistanceSameFingerSameHand
Bestmaks-ex.en.ergodox43.8743.4032.7667.01
This layout
Referenceqwerty.en.ansi100.00100.00100.00100.00

Programming code

RankLayoutScoreDistanceSameFingerSameHand
Bestx1_atreus-44-keys.en.ergodox54.5034.5661.2880.83
This layout
Referenceqwerty.en.ansi100.00100.00100.00100.00

Proglish (an 80:20 English:Code mix)

RankLayoutScoreDistanceSameFingerSameHand
Bestmaks-ex.en.ergodox49.2242.4944.7871.55
This layout
Referenceqwerty.en.ansi100.00100.00100.00100.00

Overall Fingers score (4 * English % + Code % + Proglish %) / 6

Higher is better. Score is out of 100.
RankLayoutPercentage
Bestmaks-ex.en.ergodox98.54
This layout
Referenceqwerty.en.ansi46.53
MetricLowestLowest scorecolemak-mod-DH-full.en.ansi scoreHighestHighest score
Overall fingersnoel.en.ansi27.83
maks-ex.en.ergodox98.54

English Word-based analysis

Home Keys Analysis

The Home Keys for this layout are shown with red dots in the first image above, giving the following letters:

Home key common words

Not part of final score.
Which of the 200 most common words are typeable on the home keys.

Home key words

How many of the 30,000 most common words in the English corpus are typeable on the home keys.
Not included in final score ... layouts with letters on thumb have unfair advantage, and it punishes layouts which opt to keep O and U off the home row.

Words handledWords not handled

Home Key lettersEnglish words typeableScoreLongest wordExample
Word count
Word length

No same-finger words

How many of the 30,000 most common words in the English corpus can be typed without using the same finger twice.

Home Key lettersEnglish words typeableScoreLongest wordExample
Word count
Word length

Word metric comparisons

MetricLowest exampleLowest scorecolemak-mod-DH-full.en.ansi scoreHighest exampleHighest score
Home keys wordstahan.en.ansi4
cahi.en.matrix5445
No same-finger wordsnoel.en.ansi276
whorf.en.ansi1586
Words averagenoel.en.ansi17.40 % %
whorf.en.ansi100.00 %

Typing lessons

Download some English words suitable for learning the layout.
Note if any files are empty it's because there are not enough words to create a lesson. This is most noticeable in the bad layouts.

Week 1Homekey words Day 1 Day 2 Day 3 Day 4 Day 5
Week 2No same-finger words Day 1 Day 2 Day 3 Day 4 Day 5
Week 3Common / tricky words Day 1 Day 2 Day 3 Day 4 Day 5
Week 4Pangrams Day 1 Day 2 Day 3 Day 4 Day 5
Week 5So you think you can type? Day 1 Day 2 Day 3 Day 4 Day 5
Week 6Extra practice 1: Common words in text Day 1 Day 2 Day 3 Day 4 Day 5
Week 7Extra practice 2: Lorem ipsum and friends Day 1 Day 2 Day 3 Day 4 Day 5
Week 8Extra practice 3: Underused words Day 1 Day 2 Day 3 Day 4 Day 5
Week 9Extra practice 4: Commonly misspelled words Day 1 Day 2 Day 3 Day 4 Day 5