Circle size 5p6uv

For regulations surrounding circle size, see: Ranking criteria 2d394i

Circle size (CS) is a beatmap difficulty setting that affects the size of hit objects. Circle size values range from 0 to 10, but only values from 2 to 7 can be chosen in the beatmap editor. Other values can be used by manually editing the .osu file of a map.

osu! 2676t

In osu!, circle size changes the size of hit circles and sliders, with higher values creating smaller hit objects. Spinners are unaffected by circle size. Circle size is derived through the following formula:

r = 54.4 - 4.48 * CS

Where r is the radius measured in osu!pixels, and CS is the circle size value.

osu!taiko 1u251y

In osu!taiko, circle size does not affect gameplay.

osu!catch 6n493j

In osu!catch, circle size determines the size of the catcher and the fruit.

osu!mania 3a5f4j

In osu!mania, circle size refers to the key count.

Mod effects 4s4d1b

There are two mods that alter circle size when activated:

• Easy: Halves the CS value.
• Hard Rock: Multiplies the CS value by 1.3, up to a maximum of 10.