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How backspaces affect your WPM

Vishal Parvat · · 5 min read

Backspaces are not counted as errors. They are not penalised at all. And they still lower your score — through the one channel nobody thinks about, which is the clock.

Three numbers, three different reactions

A typing test is not keeping one score, it is keeping several, and a correction hits each of them differently. That is why the same run can feel sloppy and still report high accuracy.

Gross WPM

Counts every character you sent forward, whether it was right, wrong, or later deleted. Backspacing does not take anything back off it — the keystroke happened. This is the number that rises when you correct.

Net WPM

Counts only the characters you finally committed, then subtracts a word for each word you submitted wrong. Corrections add nothing here: a fixed word is simply a correct word.

Accuracy

Judged on what you submitted, not what you typed on the way there. Catch a mistake before you press space and it was never an error. This is why accuracy can read high on a run that felt messy.

The key detail is that the character count behind Gross WPM only ever goes up. Deleting a character does not un-count it, because you really did type it — your fingers really did move. Net WPM works from a different count entirely: what you finally handed over. Those two numbers are equal on a clean run and separate the moment you start correcting.

The same mistake, three endings

1

You fix it before submitting the word

Accuracy is untouched — the word went in correct. Net WPM takes no penalty. What you lose is time: the extra keystrokes still ran down the clock, so both scores end slightly lower than if you had never missed. Gross rises, Net does not, and the gap between them widens.

2

You submit the word with the mistake in it

Accuracy drops by those characters. Net WPM loses one whole word — the same one word whether you got one letter wrong or four. Gross is unaffected; you typed the same amount either way.

3

You backspace several words to fix something earlier

The most expensive option by a distance. Every character you delete and retype counts again toward Gross and costs more time, while Net can only ever return to what it would have been if the word were right the first time. A long correction can cost more than simply leaving the mistake.

The third case is the one worth changing. Going back three words to fix a letter costs you every character you delete, every character you retype, and all the time in between — to recover a single word of penalty. The arithmetic almost never favours it.

The gap is the diagnosis

Because Gross counts everything and Net counts only what survived, the distance between them is a direct measure of wasted effort. It is the most useful thing on a result screen and the least looked at.

A narrow gap means your fingers are landing where you meant them to. A wide one means a lot of your typing went into undoing typing. And because corrections cluster — almost everyone loses the same handful of keys and letter pairs over and over — a wide gap is usually a short, fixable list rather than a general slowness.

Practical version: after your next test, ignore the headline number for a moment and look at how far apart Gross and Net sat. Then look at which keys the result breaks down as your weakest. Drilling those five or six keys closes the gap faster than any amount of typing quickly does.

Take a typing test Net vs Gross WPM, explained

Frequently asked questions

Does backspacing lower your WPM?
Indirectly, yes — but not because backspaces are penalised. They are not counted as errors. What they cost is time: every deleted and retyped character takes seconds that the clock keeps running through, and your speed is characters divided by minutes. So a correction never adds to your Net score and always adds to your elapsed time, which means the score falls.
Is it better to correct a mistake or keep typing?
For your score, correcting a word before you submit it is better than submitting it wrong — a fixed word costs nothing, a wrong word costs a whole word. But going back several words to fix something is usually worse than either, because the retyping costs more time than the single word you would have lost. As a rule: fix the word you are in, leave the ones behind you.
Do backspaces count as keystrokes in the WPM calculation?
The characters you retype after a backspace count toward Gross WPM, because Gross counts every character sent forward and is never reduced by deleting. The backspace key itself is not counted as a character. Net WPM counts only what you finally committed, so retyped characters do not inflate it.
Why is my Gross WPM much higher than my Net WPM?
Two causes, and correction is usually the bigger one. Words submitted with errors subtract from Net directly. Backspacing and retyping adds to Gross without adding to Net, because those keystrokes never became committed text. A wide gap almost always means a small set of keys is tripping you repeatedly — that is worth finding, because it is fixable.
Does a typing test detect that I corrected something?
It knows the shape of it. The engine keeps a monotonic count of everything you typed forward, separate from what you committed, so the difference between the two is exactly the work you spent undoing. That is what the gap between Gross and Net is showing you.
Should I turn off backspace to practise?
Some people find it useful for short bursts, because it forces attention onto getting the key right first time rather than relying on a fix. It is a drill, not a habit — real writing involves corrections, and a practice mode that never lets you correct trains a slightly artificial skill. Use it to notice which keys you miss, then go back to normal typing.

Written and tested by

Vishal Parvat

Founder & Developer of TypingFix

Vishal built TypingFix's multilingual typing engine and its scoring system — the same engine that produces the WPM, CPM, accuracy and consistency numbers described on this site. The behaviour described here is read from the engine's own counters rather than inferred from results — the two character counts it keeps are what make the Gross/Net gap mean what it means.

Published 2 September 2026