Keyflux Lab Typing Speed Test | Measure speed and accuracy, find your weak keys
This game measures how fast and how accurately you type, with English words or Japanese sentences typed in romaji. A wrong key stops you until you press the right one, so the result is hard to fake. At the end you get a rank, a score and a keyboard map colored by your misses.
💡 About This Tool
There are three lengths. Use 30 s for a quick check, 60 s for a steadier number, and Fixed to see how long a set amount takes: 25 words in English or 5 sentences in Japanese.
| Item | How it is calculated |
|---|---|
| Speed (English) | Correct keys ÷ 5 ÷ minutes, shown as WPM (words per minute) |
| Speed (Japanese) | Correct keys ÷ minutes, shown as keys/min |
| Accuracy | Correct keys ÷ (correct keys + misses) |
| Score | Speed × accuracy × accuracy (accuracy as a decimal from 0 to 1) |
Accuracy counts twice, so misses cost a lot. At a speed of 60, 95% accuracy scores 54, while 90% scores only 49.
| Rank | English score | Japanese score |
|---|---|---|
| S | 70 or more | 350 or more |
| A | 50 or more | 250 or more |
| B | 35 or more | 170 or more |
| C | 20 or more | 100 or more |
| D | Below that | Below that |
The test draws from about 360 English words and 50 Japanese sentences. The same word never appears twice in a row, and a Japanese sentence does not come back until all of them have been used.
Records stay in your browser: a chart of the last 30 runs for each text type, the best run for each of the 6 combinations, and running totals of your missed keys. Press "Delete all records" twice to clear them.
🧐 FAQ
Q: Can I play on a phone? A: You need a physical keyboard. The on-screen keyboard of a phone or tablet can't measure properly, but a connected keyboard works.
Q: What happens when I press a wrong key? A: You stay where you are and one miss is added. Press the right key to move on. There is no need for Backspace.
Q: Do I need to know Japanese for the romaji mode? A: No. The sentence, its reading and the romaji spelling are all on screen, and the next letter is underlined. You can simply follow the letters.
Q: Does the clock ever stop? A: Yes. It pauses when you switch tabs, scroll the text box off the screen or click elsewhere on the page. Press a key to continue. That key is not judged.
Q: What does Esc do? A: It restarts with new text. In fullscreen, the first Esc during a run restarts it, and Esc with no run going closes fullscreen.
Q: Why do I see a warning about an input method? A: Keys typed through an input method can't be read one by one. Switch your keyboard to plain alphabet input.
📚 Fun Facts
Why does a "word" count as 5 keys here? Words differ in length, so counting real words would reward whoever got shorter ones. Typing tests avoid that by using a standard word of 5 characters, with the space counted as a character. This game does the same. In 30 seconds, 150 correct keys are 30 standard words, which works out to 60 WPM, however long the words on screen were.
Only correct keys count toward speed. A miss adds nothing to your speed and lowers your accuracy, so it costs you twice. That is why the score often rises when you slow down slightly and stop making mistakes.