games and stuff to play around with
games and stuff to play around with
Draw a circle with your mouse or finger
The dashed circle shows the ideal circle based on your drawing
Draw a Perfect Circle is a precision drawing challenge that tests your motor skills. Using your mouse or touchscreen, try to draw the most perfect circle possible. Our algorithm analyzes your drawing in real-time and scores you on roundness, smoothness, and consistency.
The scoring system measures how closely your freehand drawing matches a mathematically perfect circle. It evaluates the deviation of each point from the ideal radius, the smoothness of your stroke, and how well your start and end points connect. Scores range from 0% to 100%.
Use your whole arm rather than just your wrist for smoother motion. Start from the top and draw clockwise in one continuous stroke. Practice at a moderate speed — too fast leads to wobbles, too slow leads to bumps. The world record for a freehand circle is surprisingly close to perfect.