'Alphametric' computer keyboard layout

Canonical namealphametric.en.ansi
LanguageEnglish
Form factorSlab : ANSI
'Author'Martin (1972), with ANSI top row and punctuation
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)No
Uppercase on same keyYes
Conventional home keys, fingering, Space, Enter, Shifts, AltGrYes
Maintains QWERTY ZXCVNo
Maintains Colemak punctuationNo

Click image for larger view

alphametric.en.ansi


Download the Keyboard Layout Analyzer .json file.

Changes from QWERTY (1873)

alphametric.en.ansi

Changes from Modified Blickensderfer (1892 / 2012)

alphametric.en.ansi

Changes from Dvorak (1936)

alphametric.en.ansi

Changes from Colemak (2006)

alphametric.en.ansi

Changes from MTGAP (2012)

alphametric.en.ansi

Changes from HIEAMTSRN (2014)

alphametric.en.ansi

Changes from Uciea Vanilla (2021)

alphametric.en.ansi

Changes from Poqtea-qp (Autogenerated, 2021)

alphametric.en.ansi

Similarity

AncestorScore
QWERTY (1873)
Modified Blickensderfer (1892 / 2012)
Dvorak (1936)
Colemak (2006)
MTGAP (2012)
HIEAMTSRN (2014)
Uciea Vanilla (2021)
Poqtea-qp (2021)
Maximum

Alphametric is most similar to

LayoutScore
dvorak-original-numbers.en.ansi22.25
dvorak-programmer-ordered-numbers.en.ansi22.25
dvorak.en.ansi22.25
dvorak-caps-backspace.en.ansi22.25
dvorak-untangled.en.ansi22.00
dvorak-mod.en.ansi21.25
right-pinky-friend.en.ansi20.25
dvorak-mod-ian.en.ansi19.25
oiseau.en.ansi18.00
dvorak-mod-kaeteker.en.ansi17.00

Alphametric is least similar to

LayoutScore
bgrassy.en.ansi1.75
embizone.en.ansi1.75
oneproduct.en.ansi1.75
embizone-mod-ian.en.ansi1.75
hands-down-alt.en.ansi2.00
light-anderson-mod-ian.en.ansi2.00
hands_down_alt.en.ansi2.00
light-anderson.en.ansi2.00
bvofrak.en.ansi2.25
goettl-brugh-julstrom.en.ansi2.25

Scores

Scores are percentages relative to the best layout for each metric.
MetricPercentage
Finger-based metrics57.80
Word-based metrics83.61
English57.34
Code57.51
Proglish59.94
Words metric for no same-finger83.61
Overall score66.40

All layouts (434)

MetricLowestLowest scorealphametric.en.ansi scoreHighestHighest score
Fingersnoel.en.ansi27.8357.80
maks-ex.en.ergodox98.54
Wordsnoel.en.ansi17.4083.61
whorf.en.ansi100.00
Averagenoel.en.ansi24.3566.40
maks-ex.en.ergodox98.08

All ANSI (325)

MetricLowestLowest scorealphametric.en.ansi scoreHighestHighest score
Fingersnoel.en.ansi27.8357.80
full-maks-minimo.en.ansi78.62
Wordsnoel.en.ansi17.4083.61
whorf.en.ansi100.00
Averagenoel.en.ansi24.3566.40
full-maks-minimo.en.ansi83.79

Conventional ANSI (251)

MetricLowestLowest scorealphametric.en.ansi scoreHighestHighest score
Fingersnoel.en.ansi27.8357.80
g-ansi-maks.en.ansi72.45
Wordsnoel.en.ansi17.4083.61
whorf.en.ansi100.00
Averagenoel.en.ansi24.3566.40
uciea-gcsv.en.ansi79.94

Conventional ANSI + QWERTY shift pairs (212)

MetricLowestLowest scorealphametric.en.ansi scoreHighestHighest score
Fingersnoel.en.ansi27.8357.80
g-ansi-maks.en.ansi72.45
Wordsnoel.en.ansi17.4083.61
whorf.en.ansi100.00
Averagenoel.en.ansi24.3566.40
uciea-gcsv.en.ansi79.94

Comparison to other layouts

alphametric.en.ansi alphametric.en.ansi

colemak.en.ansi

mtgap.en.ansi

workman.en.ansi

dvorak.en.ansi

norman.en.ansi

qwerty.en.ansi

Best ANSI

full-maks-minimo.en.ansi

whorf.en.ansi

Worst ANSI

noel.en.ansi

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 layoutalphametric.en.ansi76.5178.8082.1060.77
Referenceqwerty.en.ansi100.00100.00100.00100.00

Programming code

RankLayoutScoreDistanceSameFingerSameHand
Bestx1_atreus-44-keys.en.ergodox54.5034.5661.2880.83
This layoutalphametric.en.ansi94.7695.57101.7879.10
Referenceqwerty.en.ansi100.00100.00100.00100.00

Proglish (an 80:20 English:Code mix)

RankLayoutScoreDistanceSameFingerSameHand
Bestmaks-ex.en.ergodox49.2242.4944.7871.55
This layoutalphametric.en.ansi82.1183.4889.2965.03
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 layoutalphametric.en.ansi57.80
Referenceqwerty.en.ansi46.53
MetricLowestLowest scorealphametric.en.ansi scoreHighestHighest score
Overall fingersnoel.en.ansi27.8357.80
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:

aehnostu

Home key common words

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

Words handledWords not handled
the to a that as on at he not an has one she so out than no then these those see use too us set of and in is was for with it be by i his from are had which have or were this but you their they her all been will who would more its up can him there into we when said them about other time if some only also first could two my what over such do may me any like after very most new made your people now between should where years many being our before through much way work did well down back just even because own little make must good under man used both same how still three while last life against know year each get mr take long part off go day might great never found old gbp right another place came during again without come world men end upon think later say few left number away thought until home here small different system though around since often called within always every need went

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 lettersEnglish words typeableScoreLongest wordExample
aehnostu38714699tennessee

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
aehnostu19947132619seventeenth-century

Word count
Word length

Word metric comparisons

MetricLowest exampleLowest scorealphametric.en.ansi scoreHighest exampleHighest score
Home keys wordsabcdef.en.ansi151469
cahi.en.matrix5445
No same-finger wordsnoel.en.ansi2761326
whorf.en.ansi1586
Words averagenoel.en.ansi17.40 %83.61 %
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