| Canonical name | colemak-mod-DH-full.en.ansi |
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| Language | English |
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| Form factor | Slab : ANSI |
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| 'Author' | Steve Pugh
Author data may not be correct, we're working on it. |
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| Keys horizontally staggered | Yes |
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| Letters on thumb (lower and upper case) | 0 |
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| Avoids AltGr for standard characters | Yes |
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| Does not move non-character keys (ANSI/ISO) | Yes |
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| Maintains QWERTY 'shift' pairs | Yes |
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| Maintains QWERTY top row (ANSI/ISO) | Yes |
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| Uppercase on same key | Yes |
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| Conventional home keys, fingering, Space, Enter, Shifts, AltGr | No |
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| Maintains QWERTY ZXCV | No |
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| Maintains Colemak punctuation | Yes |
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Click image for larger view
Download the Keyboard Layout Analyzer .json file.
Changes from QWERTY (1873)
Changes from Dvorak (1936)
Colemak mod DH full is most similar to
Colemak mod DH full is least similar to
Scores
Scores are percentages relative to the best layout for each metric.
| Metric | Percentage |
|---|
| Finger-based metrics | 58.86 |
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| Word-based metrics | 95.46 |
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| English | 58.33 |
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| Code | 59.18 |
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| Proglish | 60.68 |
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| Words metric for no same-finger | 95.46 |
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| Overall score | 71.06 |
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All layouts (447)
| Metric | Lowest | Lowest score | colemak-mod-DH-full.en.ansi score | Highest | Highest score |
|---|
| Fingers | noel.en.ansi | 27.83 |
 | maks-ex.en.ergodox | 98.54 |
| Words | noel.en.ansi | 17.40 |
 | whorf.en.ansi | 100.00 |
| Average | noel.en.ansi | 24.35 |
 | maks-ex.en.ergodox | 98.08 |
All ANSI (333)
| Metric | Lowest | Lowest score | colemak-mod-DH-full.en.ansi score | Highest | Highest score |
|---|
| Fingers | noel.en.ansi | 27.83 |
 | full-maks-minimo.en.ansi | 78.62 |
| Words | noel.en.ansi | 17.40 |
 | whorf.en.ansi | 100.00 |
| Average | noel.en.ansi | 24.35 |
 | full-maks-minimo.en.ansi | 83.79 |
Unconventional ANSI (80)
| Metric | Lowest | Lowest score | colemak-mod-DH-full.en.ansi score | Highest | Highest score |
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| Fingers | qwerty-typewriter.en.ansi | 33.82 |
 | full-maks-minimo.en.ansi | 78.62 |
| Words | dvorak-mod-elazharty-azmi-suliman-mod-ian.en.ansi | 39.22 |
 | rtnsg.en.ansi | 96.85 |
| Average | armel-refingered-ian.en.ansi | 39.72 |
 | full-maks-minimo.en.ansi | 83.79 |
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
| Rank | Layout | Score | Distance | SameFinger | SameHand |
|---|
| Best | maks-ex.en.ergodox | 43.87 | 43.40 | 32.76 | 67.01 |
| This layout | | | | | |
| Reference | qwerty.en.ansi | 100.00 | 100.00 | 100.00 | 100.00 |
Programming code
| Rank | Layout | Score | Distance | SameFinger | SameHand |
|---|
| Best | x1_atreus-44-keys.en.ergodox | 54.50 | 34.56 | 61.28 | 80.83 |
| This layout | | | | | |
| Reference | qwerty.en.ansi | 100.00 | 100.00 | 100.00 | 100.00 |
Proglish (an 80:20 English:Code mix)
| Rank | Layout | Score | Distance | SameFinger | SameHand |
|---|
| Best | maks-ex.en.ergodox | 49.22 | 42.49 | 44.78 | 71.55 |
| This layout | | | | | |
| Reference | qwerty.en.ansi | 100.00 | 100.00 | 100.00 | 100.00 |
Overall Fingers score (4 * English % + Code % + Proglish %) / 6
Higher is better. Score is out of 100.
| Rank | Layout | Percentage |
|---|
| Best | maks-ex.en.ergodox | 98.54 |
| This layout | | |
| Reference | qwerty.en.ansi | 46.53 |
| Metric | Lowest | Lowest score | colemak-mod-DH-full.en.ansi score | Highest | Highest score |
|---|
| Overall fingers | noel.en.ansi | 27.83 |
| maks-ex.en.ergodox | 98.54 |
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.
| Words handled | Words not handled |
|---|
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.
| Home Key letters | English words typeable | Score | Longest word | Example |
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| Word count |  |
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| Word length |
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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 letters | English words typeable | Score | Longest word | Example |
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| Word count |  |
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| Word length |
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Word metric comparisons
| Metric | Lowest example | Lowest score | colemak-mod-DH-full.en.ansi score | Highest example | Highest score |
|---|
| Home keys words | tahan.en.ansi | 4 |
 | cahi.en.matrix | 5445 |
| No same-finger words | noel.en.ansi | 276 |
 | whorf.en.ansi | 1586 |
| Words average | noel.en.ansi | 17.40 % | %
| whorf.en.ansi | 100.00 % |
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.
