TestMyGears

PSA method calculator

The PSA method (Perfect Sensitivity Approximation) finds your ideal mouse sensitivity by comparison. Pick your game, enter your current sensitivity and DPI, then try the lower value A and the higher value B in game each round and keep the one that feels better. Seven rounds later you have a sensitivity tuned to your own hand — with its cm/360, eDPI and the same feel converted to other games.

PSA method calculator

Not started
Start the PSA test Your current settings
Game
Starts from your current sensitivity · 7 rounds, about 7 min
  1. 1Each round shows two values: A is lower, B is higher
  2. 2Try each one in your game for about 30 seconds, with the same drill
  3. 3Pick the one that feels better — the range narrows every round
About 30 s per value · same drill · no warm-up

Result

Not started
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Valorant sensitivity Shown once the test starts
eDPI
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cm/360
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Vs. start
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Other games · same cm/360 All conversions →

    How the PSA method narrows your sensitivity

    The PSA method (Perfect Sensitivity Approximation) finds your sensitivity by comparison, not by copying settings. Each round you test a lower and a higher value, keep the one that feels better, and the gap shrinks. After seven rounds the two options are only ±5% apart — closer than most people can feel.

    RoundA (lower)B (higher)Spread
    R1×0.5×1.5±50%
    R2×0.5×1.5±50%
    R3×0.6×1.4±40%
    R4×0.7×1.3±30%
    R5×0.8×1.2±20%
    R6×0.9×1.1±10%
    R7×0.95×1.05±5%
    • A = base × (1 − spread) · B = base × (1 + spread)
    • Next base = (your pick + base) ÷ 2 — halfway toward what you chose
    • Result = (last pick + last base) ÷ 2

    How to try each value

    Run the test in your own game, on the same map and drill for A and B. Use all three kinds of aiming — a value can feel great for one and wrong for another.

    1

    Flicks

    Snap between two targets. Do you land in one motion, or overshoot and correct?

    2

    Tracking

    Follow a strafing target. Can you stay on it without falling behind?

    3

    Micro-adjustments

    Hold on a distant head and make tiny corrections. Does the crosshair stay steady?

    Skip the warm-up

    Judge each value in the first few seconds. Once your hand warms up it adapts to whatever it is holding, and the choice drifts toward habit instead of fit.

    Signs your sensitivity is off

    What you noticeIn gameLikely
    Flicks overshoot Small flicks fly past the target Too high
    Flicks fall short Flicks stop before the target Too low
    Shaky crosshair Tiny corrections wobble around the head Too high
    Tracking falls behind Fast strafes pull away from you Too low
    Out of pad You run out of mouse pad mid-turn Too low

    Even when you think you know the answer, try both values every round and pick by feel.

    Why use the PSA method?

    Find a sensitivity that fits you

    Instead of copying a pro's settings, the PSA method tests values on your own hand, mouse and pad until the range is about ±5%.

    Valorant, CS2 and every linear-slider shooter

    Run the PSA method in Valorant, CS2, Apex Legends, Overwatch 2, Fortnite, Rainbow Six Siege, Warzone and more.

    Carry it to your other games

    The result panel converts your PSA sensitivity to other games at the same cm/360, so a full turn takes the same distance everywhere.

    Stop changing sensitivity every week

    One structured PSA run gives you a value you can trust and stick with while your muscle memory settles.

    How to use the PSA calculator

    1. Step 1

      Choose your game, enter the sensitivity and mouse DPI you use now, and press Start test.

    2. Step 2

      Set value A in your game and play about 30 seconds of the same drill — flicks, tracking and small corrections. Then do the same with value B.

    3. Step 3

      Pick the value that felt better. The calculator moves halfway toward your pick and the next pair is closer together. Use Undo if you clicked the wrong one.

    4. Step 4

      After round 7, copy your PSA sensitivity into the game, and use the converted values if you play other shooters.

    PSA method calculator FAQs

    What is the PSA method?

    PSA stands for Perfect Sensitivity Approximation. Each round you compare a lower and a higher sensitivity in game and keep the one that feels better; the gap shrinks from ±50% to ±5% over seven rounds, so you end up with a value chosen by your own feel.

    Are 7 rounds enough?

    For most players, yes. In the last round the two options differ by only ±5%, which is about the limit of what people can feel. If it still feels slightly off, start another run from the result — the new range will center on it.

    My result is far from my old sensitivity. Should I switch?

    Yes, but give it time. Your muscle memory is tuned to the old value, so the new one will feel strange at first. Play with it for one to two weeks before judging, and don't switch back and forth in between.

    Do I need to run the PSA method again for each game?

    No. What you feel is the distance for a full turn — cm/360. Convert your PSA result to other games at the same cm/360 (the result panel shows the main ones, the sensitivity converter covers the rest).

    Should I set my DPI before the test?

    Yes, set it first and leave it alone. DPI and in-game sensitivity together decide the turn distance, so changing DPI mid-test makes the rounds incomparable. If you're unsure what your mouse really sends, measure it with the DPI test.

    Is a high or a low sensitivity better?

    Neither by default. Low sensitivity makes small corrections steadier but needs bigger arm movements; high sensitivity turns fast but makes fine aim harder. The right balance depends on you, your game and your mouse pad — which is exactly what PSA measures.

    Should I turn off mouse acceleration?

    Yes. Windows' Enhance pointer precision makes the same hand movement turn different amounts depending on speed, so feel keeps shifting. Most shooters use raw input and ignore it, but turning it off in Windows settings removes any doubt.

    When should I run the PSA test again?

    After a new mouse or mouse pad, after a long break, or when your aim never feels settled. Start from the sensitivity you use now. Running it at different times of day and averaging the results also smooths out one unusual session.

    Does the PSA method work for Valorant and CS2?

    Yes — it works in any game with a linear sensitivity slider, including Valorant, CS2, Apex Legends, Overwatch 2, Fortnite, Rainbow Six Siege and Warzone. PUBG is left out because its slider is not linear, so evenly spaced steps would not feel evenly spaced.

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