Detailed Answer
There is no single 'standard' length, but the most common durations are 1 minute, 3 minutes, and 5 minutes. One-minute tests measure short-burst speed – useful for casual practice but can be inflated by warm-up effects. Three-minute tests balance accuracy and speed, widely used on sites like 10FastFingers. Five-minute tests are considered the professional standard (e.g., for job applications or government exams like SSC in India) because they test sustained concentration and fatigue resistance. Ten-minute tests exist but are rare for general use. Choose 5-minute tests if you want realistic assessment of work-ready speed.