How to play Draw a Perfect Circle
Put your finger, mouse or pen on the canvas, a good distance away from the dot, and draw one continuous circle around it. Lift off when you get back to where you started (or keep going and the game will close the loop for you). The line changes colour as you draw: green means you are right on track,red means you are drifting away from a true circle. Your accuracy appears as a percentage the moment the circle is complete.
- Start anywhere around the dot, not too close to it.
- Draw all the way around in one direction, in one stroke.
- Finish within 10 seconds. Slow and shaky usually scores lower than smooth and steady.
- Check your score, then try to beat your personal best.
How the score works
A perfect circle is a set of points that are all exactly the same distance from the centre. The game treats the dot as the centre, measures the radius at every point of your line and works out how far, on average, each point strays from the average radius. A circle with almost no wobble scores close to 100%; a lopsided egg or a squashed oval scores lower. Because the score is relative to the size of your circle, a big circle and a small circle are judged equally fairly.
Tips for drawing a perfect circle freehand
- Draw from the elbow or shoulder, not the wrist. Large joints make smooth arcs; wrist movement adds wobble.
- Pick a medium size. Tiny circles magnify every jitter, huge ones are hard to keep round at the edges.
- Keep a steady speed. Hesitating or speeding up halfway is where most dents come from.
- Watch the dot, not your finger. Imagining a fixed radius from the centre helps you stay consistent.
- Try both directions. Many people are noticeably better clockwise, or the other way round.
Why is drawing a perfect circle so hard?
Our arms are built from joints that rotate around different points, so a "round" motion is really several movements blended together. Tiny timing errors between those joints flatten one side of the circle or bulge another. It is also why the skill has been admired for centuries: according to Giorgio Vasari'sLives of the Artists, the painter Giotto proved his talent to a papal messenger simply by drawing a flawless circle freehand in red paint. Today you can test the same skill in seconds.
Like this? Try more drawing challenges
If you enjoy pure drawing skill tests, try Speed Draw where an AI has to recognise your doodles against the clock, or Quick Draw for a relaxed six-word round. Want to just doodle? Open the free online drawing board.
Draw a Perfect Circle FAQ
Is it possible to score 100% on Draw a Perfect Circle?
In theory yes, but a freehand circle is never mathematically perfect, so in practice scores top out in the high 90s. Anything above 95% is outstanding.
How is the circle score calculated?
We measure the distance from the centre dot to every point of your line, then compare each distance to the average radius. The smaller the average wobble, the higher your score. Size does not matter, consistency does.
What counts as a good score?
Above 80% is a great circle, above 90% is excellent and above 95% is exceptional. Most people improve a lot within the first ten tries.
Why did I get "Too close to the dot" or "Wrong way"?
Your circle has to go around the dot without touching it, in one direction only. Start a comfortable distance away from the dot and keep moving clockwise or anticlockwise without doubling back.
Can I play Draw a Perfect Circle on my phone?
Yes. The game works with a finger or stylus on phones and tablets, and with a mouse, trackpad or pen tablet on a computer.
Is my best score saved?
Your best score is stored on your device in this browser, so you can come back and try to beat it. Nothing is uploaded and no account is needed.