Gaming Stats and Unit Conversion: FPS, DPI, Sensitivity, Milliseconds
Published April 24, 2026
Competitive gamers convert between frames per second (FPS), mouse sensitivity (counts/inch), DPI (dots per inch), reaction time (milliseconds), and monitor refresh rates to optimize performance. A 400 DPI mouse at 3.0 sensitivity is not equivalent to 800 DPI at 1.5 sensitivity in practical terms—understanding unit relationships prevents miscalibration.
Table of Contents
Understanding the Basics
Mouse DPI (dots per inch) and in-game sensitivity interact multiplicatively: effective sensitivity = DPI × in-game sensitivity. A 400 DPI mouse at 2.0 sensitivity feels the same as 800 DPI at 1.0 sensitivity—but raw DPI affects cursor fluidity at the OS level, while sensitivity affects aiming granularity in-game. Pro players fixate on finding their "true" sensitivity and rarely change it.
Frame rate (FPS) and monitor refresh rate interact: a 144 Hz monitor displaying 300 FPS only refreshes 144 times per second, so excess frames are wasted (though input lag decreases). Reaction time in milliseconds (ms) relates: 60 Hz = 16.67 ms per frame; 144 Hz = 6.94 ms per frame. Reducing frame time by 10 ms can mean the difference between hitting or missing a shot.
Gaming Performance Units
- DPI (Dots Per Inch): Mouse sensitivity setting. Higher DPI = faster cursor movement. Pro players: 400-1600 DPI.
- In-game Sensitivity: Multiplier on mouse movement. Effective sens = DPI × in-game sensitivity.
- FPS (Frames Per Second): Rendering rate. 60 FPS = 16.67 ms per frame; 144 FPS = 6.94 ms per frame.
- Milliseconds (ms): Frame time. 60 Hz = 16.67 ms; 120 Hz = 8.33 ms; 240 Hz = 4.17 ms per frame.
- Hz (Monitor Refresh Rate): Display refresh frequency. 60 Hz, 144 Hz, 240 Hz, 360 Hz common in gaming.
Conversion Table
| from | to | factor |
|---|---|---|
| 60 Hz | Frame time | 16.67 ms |
| 144 Hz | Frame time | 6.94 ms |
| 240 Hz | Frame time | 4.17 ms |
| DPI × Sensitivity | Effective Sensitivity | Multiplicative |
Worked Examples
Sensitivity Equivalence
Player A: 800 DPI, 1.5 sensitivity = 1200 effective. Player B: 400 DPI, 3.0 sensitivity = 1200 effective. Same effective sensitivity, but DPI affects OS-level cursor smoothness. Player A setup is smoother (higher native DPI).
Refresh Rate and Input Lag
60 Hz monitor: 16.67 ms per frame. 144 Hz monitor: 6.94 ms per frame. Player reacts in ≈200 ms. On 60 Hz, reaction spans 3.33 frames; on 144 Hz, spans 1.39 frames. Higher Hz = lower perceived input lag.
Practical Applications
Esports setup: Match DPI/sensitivity to comfortable aiming range. Don't chase pro settings; find your "true" sens and lock it.
Monitor choice: 144 Hz+ reduces frame time by 10+ ms. Pro-level competition often demands 240 Hz+ (4.17 ms per frame).
Input latency: Total latency = mouse latency + GPU rendering + monitor latency + network latency. DPI/sensitivity tuning improves only mouse responsiveness.
Streaming: 60 FPS streaming is smooth for viewers; 144+ FPS capture requires beefy hardware but delivers smoother replay.
Best Practices
💡 Lock your DPI/sensitivity combo and don't change it between games. Muscle memory builds over months; swapping settings resets calibration. Pro players rarely adjust mid-season.
Lock your DPI/sensitivity combo and don't change it between games. Muscle memory builds over months; swapping settings resets calibration. Pro players rarely adjust mid-season.
Common Mistakes
⚠️ Effective sensitivity (DPI × in-game sens) is what matters for aiming, but DPI also affects OS cursor smoothing. High DPI (1600+) with low sensitivity (0.5) often outperforms low DPI (400) with high sensitivity (4.0) due to cursor interpolation.
Effective sensitivity (DPI × in-game sens) is what matters for aiming, but DPI also affects OS cursor smoothing. High DPI (1600+) with low sensitivity (0.5) often outperforms low DPI (400) with high sensitivity (4.0) due to cursor interpolation.
Tools and Resources
- Online sensitivity calculator: Convert sensitivity between games (CS:GO sens ≠ Valorant sens)
- Frame time calculator: Input refresh rate, get milliseconds per frame
- Reaction time test: Online tools measure your reaction time in ms
Key Takeaways
- Effective sensitivity = DPI × in-game sensitivity. 800 DPI × 1.5 sens = 1200 effective = 400 DPI × 3.0 sens.
- 60 Hz = 16.67 ms per frame; 144 Hz = 6.94 ms; 240 Hz = 4.17 ms. Higher Hz = lower input lag.
- Don't constantly change DPI/sensitivity; muscle memory matters more than theoretical optimization.
- High DPI with low sensitivity often feels smoother than low DPI with high sensitivity due to cursor interpolation.
- Reaction time ≈200 ms; higher refresh rates (240 Hz+) reduce perceived lag within human reaction window.