Audio Latency Calculator

Frequently Asked Questions

What latency is acceptable for recording?

Under about 5 ms feels immediate; up to roughly 10 ms is fine for most players; beyond roughly 20 ms percussive and fast parts feel sluggish.

Why not always use the smallest buffer size?

Small buffers force the CPU to service audio more often, raising the risk of dropouts. Use a small buffer while tracking and a large one while mixing.

What about direct or hardware monitoring?

Many interfaces route the input to headphones in analogue with near-zero latency, sidestepping the buffer entirely for the performer.

Does sample rate affect latency?

Yes - 96 kHz halves buffer latency versus 48 kHz but roughly doubles processing load. Treat these numbers as a planning estimate for your specific interface.

What is the fixed converter overhead?

Real interfaces add a small fixed converter and driver overhead (often 1-3 ms) on top of the buffer figure. This estimate omits that overhead, so actual latency will be slightly higher.

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Estimates for informational purposes only.

Important Disclaimer: Estimates for informational purposes only.

This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.

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How It Works

Latency is the delay between making a sound (or playing a virtual instrument) and hearing it back through your audio interface. It is set almost entirely by the driver's buffer size and the sample rate. This calculator converts a buffer size in samples and a sample rate into the latency of a single buffer, then estimates the round-trip figure - input buffer plus output buffer - the delay a performer actually feels while monitoring through the computer.

It also expresses the total in samples and gives a plain-language verdict against the rough thresholds at which musicians start to notice and then struggle with the delay. The reason this matters in practice is that the same project can feel effortless to track at one buffer setting and unplayable at another, even though nothing about the music changed.

The formula is straightforward: one buffer represents (buffer-samples / sample-rate) x 1000 milliseconds. Round-trip latency is modelled as one-buffer-ms x passes, where passes defaults to 2 (in and out).

Use Cases

Latency calculation is valuable in several recording and production scenarios:

Setting buffer size before a tracking session to ensure comfortable real-time monitoring

Comparing latency at different sample rates (44.1 kHz vs. 48 kHz vs. 96 kHz)

Diagnosing whether a performer's timing complaints are caused by buffer latency

Planning a live performance rig where virtual instruments must be played in real time

Understanding the trade-off between low latency and CPU headroom when mixing with heavy plugins

Tips

Under about 5 ms feels immediate; up to roughly 10 ms is fine for most players; beyond roughly 20 ms percussive and fast parts feel sluggish.

Use a small buffer while tracking and a large one while mixing - small buffers force the CPU to service audio more often, raising the risk of dropouts.

Many interfaces route the input to headphones in analogue with near-zero latency, sidestepping the buffer entirely for the performer.

Doubling the sample rate halves latency at the same buffer size, but roughly doubles CPU processing load.

Plugin latency from look-ahead limiters and linear-phase EQ can dwarf the buffer figure - check your DAW's total reported latency.

FAQ

What latency is acceptable for recording?

Under about 5 ms feels immediate; up to roughly 10 ms is fine for most players; beyond roughly 20 ms percussive and fast parts feel sluggish.

Why not always use the smallest buffer?

Small buffers force the CPU to service audio more often, raising the risk of dropouts. Use a small buffer while tracking and a large one while mixing.

What about direct or hardware monitoring?

Many interfaces route the input to headphones in analogue with near-zero latency, sidestepping the buffer entirely for the performer.

Does sample rate affect latency?

Yes - 96 kHz halves buffer latency versus 48 kHz but roughly doubles processing load. Treat these numbers as a planning estimate, not a guaranteed spec for your specific interface.

What is the fixed converter overhead?

Real interfaces add a small fixed converter and driver overhead (often 1-3 ms) on top of the buffer figure. This estimate omits that overhead, so actual latency will be slightly higher.

Audio Latency Calculator

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