Typeinc follows Character based Formula:
It's the international standard formula for typing test, but with some tweeks. This formula is independent from exercise text. Thus it gives you a justified result with any passage your are typing.

WPM = (Typed Characters/5)/(Time in minutes)
## Here WPM = Word Per Minute

All typed entries = Total Key Strokes (or key depression).
The catch is that the typed characters are basically from correct words and spaces typed.

For example: The sentence you get is "Amazing apple am intelligent", while your friend gets "Hi apple this are". It is unfair to just see correct words, but we take the net correct characters from the correct words and then use the above formula. Thus it is independent of what sentence you get that you will get a fair WPM.

If you type 200 character(or keystroke) in 1 minutem, which are within correct words, then your typing speed will be = 200 / 5 = 40 WPM

IMPORTANT: In Typeinc, we just display 2 rounded decimal place, but the value used throughout has many more decimal places. Hence getting exact wpm = 40 (not displayed) is a miracle I would say.

Time taken

The moment you start typing till the last character difference is the time taken by you. Thus it is impossible for you to backspace your last character(else you may wait for the program to automatically stop, which it won't).
Time taken is calculated using the python library time. Thus any small difference in actual time may be caused due to code execution or time library.

When you restart, the start time is set to zero which starts again when you start typing till the end.

Accuracy

Accuracy is calculated by -

Accuracy = 100 - (incorrect characters typed)/(total characters)*100

We do not count the character position you did pressed backspace for, although they are counted in the Correct words. So don't think their is no use of backspacing.

Grading System Explanation

The Grading system has been set seperately for each of the difficulty levels.
Look at the below given division for Grading for each difficulty level. Note:

• 20000 is set as max limit because No human or mechanical robot can achieve this. So you can try this on robots too!!!
• The limits are inclusive i.e. min_ <= wpm <= max. Hence for example if you land at exact 24 in SE level, then you will get E grade since the loop used for grading reaches E first and breaks(well intended), plus according to wpm note, getting exact 24 is a miracle.

Super Easy Regular level (SE)

WPM Range	Grade	Level
0-24	E	Beginner
24-45	D	Novice
45-65	C	Intermediate
65-90	B	Proficient
90-120	A	Advanced
120-159	S	Expert
159-20000	SS	Grandtypaa

Easy (E)

WPM Range	Grade	Level
0-20	E	Beginner
20-42	D	Novice
42-54	C	Intermediate
54-80	B	Proficient
80-110	A	Advanced
110-144	S	Expert
144-20000	SS	Grandtypaa

Normal (N)

WPM Range	Grade	Level
0-18	E	Beginner
17-38	D	Novice
38-48	C	Intermediate
48-72	B	Proficient
72-100	A	Advanced
100-132	S	Expert
132-20000	SS	Grandtypaa

Hard (H)

WPM Range	Grade	Level
0-16	E	Beginner
15-34	D	Novice
34-42	C	Intermediate
42-64	B	Proficient
64-90	A	Advanced
90-120	S	Expert
120-20000	SS	Grandtypaa

Super Hard (SH)

WPM Range	Grade	Level
0-14	E	Beginner
13-30	D	Novice
30-38	C	Intermediate
38-58	B	Proficient
58-80	A	Advanced
80-108	S	Expert
108-20000	SS	Grandtypaa

Insane (I)

WPM Range	Grade	Level
0-13	E	Beginner
11-26	D	Novice
26-34	C	Intermediate
34-49	B	Proficient
49-72	A	Advanced
72-96	S	Expert
96-20000	SS	Grandtypaa

Super Insane (SI)

WPM Range	Grade	Level
0-10	E	Beginner
10-24	D	Novice
24-30	C	Intermediate
30-42	B	Proficient
42-69	A	Advanced
69-90	S	Expert
90-20000	SS	Grandtypaa

BRUH (X)

WPM Range	Grade	Level
0-8	E	Beginner
9-22	D	Novice
22-26	C	Intermediate
26-39	B	Proficient
39-60	A	Advanced
60-82	S	Expert
82-20000	SS	Grandtypaa

SUPER BRUHH (X2)

WPM Range	Grade	Level
0-6	E	Beginner
7-18	D	Novice
18-24	C	Intermediate
24-36	B	Proficient
36-54	A	Advanced
54-75	S	Expert
75-20000	SS	Grandtypaa

DAMNN BRUHHH!! (XX)

WPM Range	Grade	Level
0-5	E	Beginner
6-16	D	Novice
16-20	C	Intermediate
20-28	B	Proficient
28-46	A	Advanced
46-65	S	Expert
65-20000	SS	Grandtypaa

U ROCK BRUHHH! (XX2)

WPM Range	Grade	Level
0-4	E	Beginner
5-12	D	Novice
12-16	C	Intermediate
16-24	B	Proficient
24-38	A	Advanced
38-57	S	Expert
57-20000	SS	Grandtypaa

GOD BRUH!!! (SXX)

WPM Range	Grade	Level
0-3	E	Beginner
3-7	D	Novice
7-10	C	Intermediate
10-18	B	Proficient
18-30	A	Advanced
30-50	S	Expert
50-20000	SS	Grandtypaa

All these numbers are well thought and come up by AnirudhG07, as mentioned before.

Typeinc score

Typeinc score is a simple formula which gets a big decimal number which you obtain as-

Typeinc score = wpm * (accuracy/100) * (difficulty level multiplier factor).

The total time factor is already taken into consideration when calculating wpm.

The multiplier factor is highly unfair to those trying lower difficulty level. Even a robot trying SE level might lose to a Novice trying SXX level in terms of Typeinc score Yes it is meant this way. Everything is fair in love and war.

NOTE: Details of multiplier constant shall not be put here.

Text generated

For each level of difficulty, different annomalies are added to the text. The regular SE level has plain english text while rest have some ASCII characters, capitalisation mix up, etc.
For the Death texts, referred to what you get for level > 10, all have increased difficulty and more anomalies introduced with more number of characters added. Thus even 1 word of SXX can fill up lines.
Also these are randomly set, it's upon your luck what length you get for your test.

All the best bruh!