As R6 Siege is a slow tactical shooter in the style of CS:GO, most top players opt for a sensitivity between 26cm-45cm to complete a 360 turn. Having your sensitivity too much higher than this will impact your ability to turn quickly, and lower than this will reduce your aiming precision, particularly at longer ranges, not ideal for rainbow 6!
Tom Clancy's Rainbow Six Siege (also known as R6) is a tactical shooter video game developed by Ubisoft Montreal and published by Ubisoft. It was released on December 1, 2015. The game puts heavy emphasis on environmental destruction and cooperation between players.
As R6 Siege is a slow tactical shooter in the style of CS:GO, most top players opt for a sensitivity between 26cm-45cm to complete a 360 turn. Having your sensitivity too much higher than this will impact your ability to turn quickly, and lower than this will reduce your aiming precision, particularly at longer ranges, not ideal for rainbow 6!
Use the calculator above. Enter the game you currently play, your in-game sensitivity and your DPI, then choose Tom Clancy's Rainbow 6: Siege. It keeps your cm/360 the same, so the converted sensitivity feels identical to what you already aim with.
Most players use 400 or 800 DPI and set their in-game sensitivity from there. The DPI itself matters less than your cm/360, the distance you move the mouse for a full turn. Pick 800, set your Tom Clancy's Rainbow 6: Siege sensitivity to land in the range above, and leave it alone.