There are the following age groups in the WRO (valid 2025):
| Age group | Ages | Years of birth |
|---|---|---|
| RoboMission and Future Innovators | ||
| Elementary | 8 to 12 years | 2013 to 2017 |
| Junior | 11 to 15 years | 2010 to 2014 |
| Senior | 14 to 19 years | 2006 to 2011 |
| WRO Starter – All | 6 to 10 years | 2015 to 2019 |
| Future Engineers – All | 14 to 22 years | 2003 to 2011 |
The deciding factor is the year when a participant was born, not the age they happen to be on the date of the competition.