The perfect circle challenge
Drawing a perfect circle by hand sounds easy until you try. The perfect circle challenge gives you one stroke around a dot and scores it out of 100, so you find out exactly how round your circle really is.
It takes ten seconds a try, works on any phone or computer, and is surprisingly hard to stop playing.
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Draw a Perfect Circle Game – How Round Can You Draw?
Free online perfect circle game: draw one circle around the dot and get an instant score out of 100, with the ideal circle drawn over yours.
How the challenge works
- Put your finger or mouse near the dot in the middle of the screen.
- Draw one continuous circle around the dot, without lifting.
- Let go to see your score. 100% is a mathematically perfect circle.
- The game draws the ideal circle over yours, so you can see where you went off. Your best score is saved.
How is the circle scored?
The game measures the distance from the dot to every point of your line and compares it with the average. The less your line wanders in and out, the higher the score. A circle that is perfectly round but drawn off-centre still loses points, so keep the dot in the middle.
Tips to draw a better circle
- Move your whole arm, not just your wrist or finger. Big joints draw smoother curves.
- Keep a steady speed. Slowing down at the end is where most circles go flat.
- Look at the dot, not your finger.
- Don't make it too small. The score compares your wobble with the size of the circle, so the same small wobble costs less on a bigger circle.
Make it a challenge with friends
Send your best score to a friend on WhatsApp and dare them to beat it, or pass one phone around the room: closest to 100 wins.
Questions & answers
Is it possible to draw a perfect circle by hand?
Very close, with practice, but a true 100% is extremely rare. Every attempt shows your score and how much your line wobbled, so you can see yourself improve.
Is the perfect circle game free?
Yes. It is free in your browser, with no download and no sign-up.
Does it work on a phone?
Yes. Draw with your finger on a phone or tablet, or with a mouse or trackpad on a computer.