Video Length At Playback Speed Calculator

Work out video length at playback speed instantly with clear inputs, formula shown and shareable results.

About Video Length At Playback Speed Calculator

Playback speed divides the runtime, and skipping intros removes time before the division applies. Combining both gives an effective speed above the nominal setting — 1.75x plus a four minute skip on a 78 minute video works out to nearly 1.86x overall.

Formula

Playback time

time = (length - skipped) / speed; effective speed = original length / time taken

Worked example

With the default values below, Video Length At Playback Speed Calculator returns Time to watch of 42.29. Change any input above and every figure here is recalculated in your browser.

Inputs used

Video length: 78 min
Playback speed: 1.75 x
Intro and credits skipped: 4 min

Results

Time to watch: 42.29 min
Time saved: 35.71 min
Time saved: 0.60 h
Effective speed including skips: 1.84 x

Step by step

1Values used
2Playback time
3Time to watch= 42.29 min
4Time saved= 35.71 min
5Time saved= 0.60 h
6Effective speed including skips= 1.84 x

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

What speed is comfortable for lectures?

1.5x suits most recorded lectures, and 2x works for familiar material. Dialogue-heavy drama becomes unpleasant much sooner.

Does audio pitch correction affect comprehension?

Modern time-stretching preserves pitch, which is why 1.5x is far more listenable now than the chipmunk effect of older players.