'Bl13' computer keyboard layout

Canonical namebl13.en.ergodox
LanguageEnglish
Form factorSplit : Ergodox / Kinesis
'Author'moesasji
Author data may not be correct, we're working on it.
Keys horizontally staggeredNo
Letters on thumb (lower and upper case)0
Uses AltGr for standard charactersYes
Moves non-character keys (ANSI/ISO)No
Changes QWERTY 'shift' pairsYes
Changes top row (ANSI/ISO)No
Uppercase on different keyNo
Conventional home keys, fingering, Space, Enter, Shifts, AltGrNo
Maintains QWERTY zxcvNo

Click image for larger view

bl13.en.ergodox


Download the Keyboard Layout Analyzer .json file.

Scores

Scores are percentages relative to the best layout for each metric.
MetricPercentage
Finger-based metrics91.52
Word-based metrics68.24
English91.23
Code91.57
Proglish92.64
Words metric for words on home keys40.57
Words metric for no same-finger95.92
Overall score79.88

All layouts (355)

MetricLowestLowest scorebl13.en.ergodox scoreHighestHighest score
Fingersyang-mali.en.ansi38.5691.52
chia.en.matrix99.25
Wordsyang-mali.en.ansi7.4568.24
chia-vanilla.en.matrix99.45
Averageyang-mali.en.ansi23.0179.88
chia.en.matrix99.35

All Ergo (81)

MetricLowestLowest scorebl13.en.ergodox scoreHighestHighest score
Fingersqwerty-kinesis-advantage.en.ergodox57.7891.52
chia.en.matrix99.25
Wordsqwerty-thumbshift.en.ergodox30.4368.24
chia.en.matrix99.45
Averageqwerty-kinesis-advantage.en.ergodox44.2279.88
chia.en.matrix99.35

All Ergo, uses AltGr (46)

MetricLowestLowest scorebl13.en.ergodox scoreHighestHighest score
Fingersgupta-whrl.en.matrix58.5291.52
chia.en.matrix99.25
Wordsgupta-whrl.en.matrix50.4868.24
chia.en.matrix99.45
Averagegupta-whrl.en.matrix54.5079.88
chia.en.matrix99.35

All Ergo, no letters on thumbs (54)

MetricLowestLowest scorebl13.en.ergodox scoreHighestHighest score
Fingersqwerty-kinesis-advantage.en.ergodox57.7891.52
x1.en.ergodox96.62
Wordsqwerty-thumbshift.en.ergodox30.4368.24
uciea-keyboard.en.matrix81.76
Averageqwerty-kinesis-advantage.en.ergodox44.2279.88
uciea-keyboard.en.matrix86.82

Comparison to other layouts

bl13.en.ergodox bl13.en.ergodox

colemak-thumbshift.en.ergodox

mtgap-thumbshift.en.ergodox

dvorak.en.matrix

maltron-us-90.en.ergodox

qwerty.en.ansi

Best Ergo

chia.en.matrix

Worst Ergo

qwerty-kinesis-advantage.en.ergodox

qwerty-thumbshift.en.ergodox

Finger based metrics

Finger based metrics, as determined with Keyboard Layout Analyzer, using KLAnext scoring model.
QwertEff is the QWERTY Efficiency, i.e. the Score relative to qwerty.en.ansi at 100%.
Lower is better, except for QwertEff.

English

RankLayoutScoreDistanceFingerUsageSameFingerSameHandQwertEff
Bestchia.en.matrix95.9336.9931.7420.386.83184.23
This layoutbl13.en.ergodox105.1543.9135.5920.665.00168.07
Referenceqwerty.en.ansi176.7380.4237.5750.728.02100.00

Programming code

RankLayoutScoreDistanceFingerUsageSameFingerSameHandQwertEff
Bestx1_atreus-44-keys.en.ergodox159.6942.9935.9670.4710.25185.56
This layoutbl13.en.ergodox174.3957.3334.4672.4310.17169.92
Referenceqwerty.en.ansi296.32124.4144.22115.0012.68100.00

Proglish (an 80:20 English:Code mix)

RankLayoutScoreDistanceFingerUsageSameFingerSameHandQwertEff
Bestchia.en.matrix110.0738.9932.0131.487.58182.28
This layoutbl13.en.ergodox118.8146.5635.3630.995.89168.87
Referenceqwerty.en.ansi200.6489.2238.9063.668.85100.00

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

Higher is better.
RankLayoutPercentage
Bestchia.en.matrix99.25
This layoutbl13.en.ergodox91.52
Referenceqwerty.en.ansi54.31
MetricLowestLowest scorebl13.en.ergodox scoreHighestHighest score
Overall fingersyang-mali.en.ansi38.5691.52
chia.en.matrix99.25

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:

aACcEeHhiINnsSTt

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 a in that is as it i his at he an this has she its can than then these see each set since of and to was for with on be by from are had not which have or were but you their they her all been one will who would more up him so out there into we when said them about other time no 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 those did well down back just even because own little make must good under man used both same how still three while use last too life against know year us 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 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.

Home Key lettersEnglish words typeableScoreLongest wordExample
aACcEeHhiINnsSTt541220912necessitates

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
aACcEeHhiINnsSTt2657716217019seventeenth-century

Word count
Word length

Word metric comparisons

MetricLowest exampleLowest scorebl13.en.ergodox scoreHighest exampleHighest score
Home keys wordsabcdef.en.ansi152209
chia-vanilla.en.matrix5445
No same-finger wordsyang-mali.en.ansi22591162170
uciea-keyboard.en.ansi169072
Words averageyang-mali.en.ansi7.45 %68.24 %
uhia.en.matrix99.45 %

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