Fermi.gg

About Fermi.gg

Fermi.gg is a free daily estimation puzzle that turns everyday curiosity into a brain-training challenge. Each day, you face three unusual numerical questions—things like how many iPhones have been produced since 2007 or how many Oreos are eaten in the United States daily. You won’t find exact figures easily, so you must rely on logic, general knowledge, and quick calculations.

The game is simple to pick up but offers surprising depth. Each question allows only one guess. After you submit a number, the game reveals the correct answer and measures how far off you were. Your score is based on a multiplier: an exact guess earns 1×, while a guess that’s twice as high or low earns 2×. Lower numbers mean better accuracy.

Every daily puzzle has the same three questions for all players, making it easy to compare your performance with others. Your final daily score combines the three results, and you can share your results with friends. If you want to practice, an archive of previous puzzles is available.

Because the questions are deliberately awkward to answer precisely, Fermi.gg encourages you to think about scale, break large numbers into smaller parts, and use rounded figures. It’s a refreshing mental workout that only takes a few minutes a day.

How to Play Fermi.gg

Each day, you are presented with three estimation questions. Read each question carefully, then enter your best numerical guess in the provided text box. Once you submit a guess, the correct answer is revealed along with your score multiplier. Your final daily score is the combination of the three multipliers—lower is better.

Tips for Fermi.gg

Break large numbers into smaller parts: estimate yearly totals, daily averages, or population figures separately before combining them. Check the units—make sure the question asks for the correct time period and quantity before entering a number. Use rounded figures to make calculations simpler. Think about scale: consider whether the answer should be in hundreds, thousands, millions, or billions. After each guess, review the explanation to improve your future estimates.