Start with one trusted scope value
Pick the magnification you already use most in ranked play, then let the calculator map the rest of your setup around that baseline.
Editorial note
This calculator is built for Rainbow Six Siege players who want cleaner scope transitions, fewer over-corrections, and a setup they can actually keep for more than one night of ranked. The numbers matter, but the workflow matters more: use one trusted baseline, map the rest of your optics around it, then verify the output with the same short drill every time.
We maintain this tool as a practical reference for Siege players after major ADS changes, optic reshuffles, and FOV-related confusion. Instead of stuffing the page with generic sensitivity advice, we focus on what you need to test, what usually breaks a setup, and where to go next if you are converting settings from another game.
Last reviewed: June 23, 2026
Pick the magnification you already use most in ranked play, then let the calculator map the rest of your setup around that baseline.
Use a short drill of one-taps, horizontal flicks, and scope swaps to make sure the output feels stable before you commit to it.
If a season update changes optics or ADS behavior, compare your old values against a saved baseline instead of adjusting by memory.
The calculator follows the Shadow Legacy-era ADS model and is intended to help you keep monitor-distance feel more consistent between optics. It should be treated as a starting point you validate in game, not as a promise that one formula can replace testing.
We built this site for players who care about repeatable settings, not for traffic pages written only to rank for a phrase. If you are testing a new FOV, rebuilding a setup after a patch, or bringing your sensitivity over from another shooter, the goal is to give you a cleaner process and better reference material, not to push you toward constant tweaking.