
A 10-minute typing test measures endurance: the speed and accuracy you can keep up over a long stretch of typing, like a real working session. Type random passages for ten minutes and see your results at the end.
Long tests are used for data entry, transcription and some clerical and government exams, where you type continuously for extended periods. They're also the most honest measure of your everyday speed, because nobody can hold a sprint pace for ten minutes.
Sit comfortably with relaxed wrists and settle into a steady rhythm from the first line instead of starting fast. When you make a mistake, fix it and move on without losing your flow. Expect your speed to drift down a little towards the end, that's normal fatigue, and it improves with practice.
Ten minutes is long enough for a poor setup to hurt. Sit so your forearms are roughly level with the keyboard, keep your wrists off the desk edge and put the screen at a height where you aren't bending your neck. Close anything that might interrupt you, a notification in minute seven costs more than you would think.
Compare this score with your 1-minute score. A gap of up to about ten percent is normal. A much bigger gap means your speed depends on short bursts, and longer practice sessions will help more than speed drills. If the two numbers are close, your endurance is fine and accuracy or technique is the next thing to work on.