Frame Time Calculator

Frequently Asked Questions

Why does my game feel choppy at high FPS?

Almost always frame-time variance. A high average with periodic spikes produces visible hitching. Watch the 1% / 0.1% lows, not just the FPS counter.

Does more FPS than my refresh rate help?

With a variable-refresh display it helps little once you exceed the supported range. On a fixed-refresh panel extra frames are discarded, though uncapped rendering can shave a little input latency.

Should I cap my frame rate?

A cap a few frames below your refresh ceiling keeps variable-refresh sync engaged and prevents the GPU from running hot for frames you never see.

How many frames will I capture in a recording?

Multiply FPS by the recording length in seconds. A 60-second clip at 60 FPS contains 3,600 frames.

Is frame time the same as input lag?

No - frame time is one ingredient. Total latency also includes peripheral polling, the render queue, and display scan-out.

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How It Works

Frame rate (FPS) and frame time are two views of the same thing. FPS is how many frames render each second; frame time is how many milliseconds each individual frame takes, and it is the more useful number for diagnosing stutter because the human eye notices an inconsistent spacing of frames far more than a slightly lower average.

The relationship is a simple reciprocal: frame time (ms) = 1000 ÷ FPS, and inversely FPS = 1000 ÷ frame time. This tool converts either way, compares your frame time against the budget set by a target FPS, and counts how many frames you render over a chosen duration.

The per-frame budget for a target rate is 1000 ÷ targetFPS. If your actual frame time is at or below that budget you sustain the target, and the difference (budget − actual) is your headroom in milliseconds. Frames over a duration = FPS × duration in seconds.

Use Cases

Frame time conversion is useful in a variety of PC gaming and content creation scenarios:

Checking whether your current FPS actually meets a target display refresh rate for smooth gameplay.

Identifying stutter by comparing average frame time to the 1% and 0.1% lows from a benchmark.

Calculating the exact frame-time budget when tuning in-game settings to hit a locked framerate target.

Estimating total frame count for a recording or clip for editing workflow planning.

Evaluating hardware upgrade gains in meaningful milliseconds rather than just headline FPS numbers.

Tips

Watch frame-time variance, not just average FPS: A steady 90 FPS line is smoother than a 140 FPS average that repeatedly dips to 40 - monitor the 1% and 0.1% lows.

Match frame time to your monitor: Aim for consistently below 16.7 ms at 60 Hz, 6.94 ms at 144 Hz, or 4.17 ms at 240 Hz rather than chasing a higher peak.

Consider a frame rate cap: Capping a few frames below your refresh ceiling keeps variable-refresh sync engaged and stops the GPU running hot for frames you never see.

Extra FPS above refresh has limits: On a fixed-refresh panel extra frames are discarded, though uncapped rendering can still shave a little input latency by presenting the freshest frame.

Frame time is not input lag: It is one ingredient; display, USB polling, and render-queue latency add more on top - use a ping/tickrate tool for total online latency.

FAQ

Why does my game feel choppy at high FPS?

Almost always frame-time variance. A high average with periodic spikes produces visible hitching. Watch the frame-time graph and the 1% / 0.1% lows, not just the FPS counter.

Does more FPS than my refresh rate help?

With a variable-refresh display it helps little once you exceed the supported range. On a fixed-refresh panel extra frames are discarded, though uncapped rendering can shave a little input latency.

Should I cap my frame rate?

A cap a few frames below your refresh ceiling keeps variable-refresh sync engaged and stops the GPU running hot for frames you never see, often producing a smoother, cooler experience.

How many frames will I capture in a recording?

Multiply FPS by the recording length in seconds. A 60-second clip at 60 FPS contains 3,600 frames - useful for estimating file size and editing workload before you hit record.

Is frame time the same as input lag?

No - frame time is one ingredient. Total latency also includes peripheral polling, the render queue, and display scan-out, which is why checking ping and tickrate separately is worth doing for online play.

Frame Time Calculator

Frequently Asked Questions

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