Discover your optimal mouse sensitivity for FPS games with the PSA Calculator. This free, browser-based tool utilizes the Perfect Sensitivity Approximation (PSA) Method to help you find a practical and comfortable sensitivity setting. Whether you play Valorant, CS2, Apex Legends, Overwatch 2, Fortnite, or other shooter titles, the calculator guides you through a structured process of comparing lower and higher sensitivity values over several rounds.

• Key Features:

• Free and accessible via web browser.

• Implements the proven PSA Method for sensitivity finding.

• Supports a wide range of popular FPS games including Valorant, CS2, Apex Legends, Overwatch 2, and Fortnite.

• Optional eDPI output for comparing setups.

• No account required for use.

How it Works:

The calculator starts with your current in-game sensitivity or a comfortable full-turn mousepad swipe. In each round, it generates one lower and one higher sensitivity value. You test both values using the same in-game routine and select the one that feels more controllable. This process is repeated, narrowing down the range until a final sensitivity estimate is provided.

Why Use the PSA Calculator?

This tool is ideal when your current sensitivity feels off, or after making changes to your setup such as mouse DPI, mousepad, or even grip style. It provides a structured way to refine your aim, ensuring consistency and control across different games and scenarios. The final result is a practical baseline, designed to be validated through continued play and minor adjustments.

Note: This calculator is exclusively for gaming mouse sensitivity and is not related to medical PSA tests.