Official Calculator Announcement for IChO 2026!

To ensure fairness and equal conditions for all participants, the CTIFREE FC-991MS will be the official calculator provided and used during the examinations of the 58th International Chemistry Olympiad.

➡️ Only permitted calculator model

➡️ Non-programmable scientific calculator

➡️ 417 functions

➡️ Will be provided by the Organizing Committee during the Olympiad

Our recommendation?

❗ Start getting familiar with this calculator in advance. Learn its layout, practice calculations, and make it part of your preparation routine.

⚡️ At IChO, every second matters — and confidence with your tools can make a difference.

Prepare smart. Calculate faster. Focus on chemistry.

See you at IChO 2026 in Uzbekistan!

20 days left.
Are you ready? 🇺🇿