How do you calculate frame time from refresh rate?

Frame time is calculated by dividing 1,000 milliseconds by the refresh rate in Hertz: Frame Time (ms) = 1000 / Refresh Rate (Hz).

Why should you cap FPS 3 frames below refresh rate with G-Sync?

Capping frame rate 3 FPS below maximum refresh rate prevents the display from dropping out of the VRR (Variable Refresh Rate) window and triggering V-Sync input lag spikes.

Display & Hardware

Refresh Rate Calculator (Frame Time & Microsecond Intervals)

Calculate exact frame times in milliseconds and microseconds for 60Hz through 540Hz esports monitors.

TL;DR: Refresh Rate Calculator converts monitor refresh rates (Hz) into precise frame delivery intervals in milliseconds (ms) and microseconds (µs), calculates motion blur persistence (MPRT), and computes optimal G-Sync / FreeSync frame rate caps.

Monitor Refresh Rate Preset

Custom Refresh Rate (Hz)

Frame Interval (ms)

6.94 ms

Microseconds (µs)

6,944 µs

G-Sync / Reflex Cap

141 FPS (-3 Rule)

Motion Persistence

6.94 ms MPRT

How do I convert monitor refresh rate (Hz) into frame delivery time (ms)?

Direct Answer: Divide 1000 by your monitor's refresh rate: Frame Time (ms) = 1000 / Hz. For example, 144Hz delivers a frame every 6.94ms, while 240Hz delivers a frame every 4.17ms.

In-Browser Execution: Calculated instantly inside your browser using client-side JavaScript with zero latency, downloads, or telemetry tracking.

How to Use the Refresh Rate Calculator

Select your monitor refresh rate preset or enter a custom Hz.
Review exact frame delivery times in milliseconds and microseconds.
Check recommended G-Sync/FreeSync frame caps to eliminate tearing without input lag.

Pro Tips & Best Practices

Moving from 60Hz (16.67ms) to 144Hz (6.94ms) cuts frame display lag by 9.73ms.
Moving from 144Hz to 240Hz saves an additional 2.77ms per frame.

Related Guides & Tutorials

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100% Client-Side Privacy Guarantee

All calculations run locally inside your browser using JavaScript and Web APIs. Your hardware data, settings, and gameplay inputs are never uploaded to any remote server. Complete privacy by design.

Frequently Asked Questions

: Frame time is calculated by dividing 1,000 milliseconds by the refresh rate in Hertz: Frame Time (ms) = 1000 / Refresh Rate (Hz).
: Capping frame rate 3 FPS below maximum refresh rate prevents the display from dropping out of the VRR (Variable Refresh Rate) window and triggering V-Sync input lag spikes.

Cite This Tool

Referencing this tool in an article, paper, guide, or stream overlay? Copy a ready-made citation below.

NexLove.org. (2026). Refresh Rate Calculator [Gaming Software Tool]. https://nexlove.org/tools/refresh-rate-calculator

“Refresh Rate Calculator.” NexLove.org, 2026, nexlove.org/tools/refresh-rate-calculator.

NexLove.org (2026) Refresh Rate Calculator. Available at: https://nexlove.org/tools/refresh-rate-calculator (Accessed: 2026).

@misc{nexlove_refresh_rate_calculator,
  title = {Refresh Rate Calculator},
  author = {{NexLove.org}},
  year = {2026},
  url = {https://nexlove.org/tools/refresh-rate-calculator}
}

Embed This Tool

Add the live Refresh Rate Calculator to your own gaming blog, esports site, or stream hub with this responsive iframe snippet.

<iframe src="https://nexlove.org/embed/refresh-rate-calculator.html" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:12px" title="Refresh Rate Calculator — NexLove.org" loading="lazy"></iframe>

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