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Audio To Text Duration Calculator

Work out audio to text duration instantly with clear inputs, formula shown and shareable results.

About Audio To Text Duration Calculator

Manual transcription takes three to eight times the audio duration depending on clarity and speaker count. An hour of clear single-speaker audio takes three hours of work at 35 an hour, so 105 - about 1.75 per audio minute. A multi-speaker meeting doubles that, which is why speaker diarisation is priced separately.

Formulas

Transcription time

work minutes = audio minutes x difficulty factor

Cost

cost = work hours x hourly rate

Worked example

With the default values below, Audio To Text Duration Calculator returns Transcription Time of 3.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Audio lengthminimum 0 min
60 min
Audio conditionsone of Clear single speaker (3x), Two speakers, good audio (4x), Multi-speaker meeting (6x), Poor audio or heavy accents (8x)
Clear single speaker (3x)
Transcription rate per hourminimum 0
35

Results

Transcription Time
3.00 h
Transcription Time In Minutes
180
Transcription Cost
$105.00
Cost Per Audio Minute
$1.75

Step by step

  1. 1Values used
  2. 2Transcription time
  3. 3Cost
  4. 4Transcription Time= 3.00 h
  5. 5Transcription Time In Minutes= 180
  6. 6Transcription Cost= 105.00
  7. 7Cost Per Audio Minute= 1.75

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

Does automatic transcription change the ratio?

Yes - machine output plus human correction runs at about 1.5 to 2 times audio for clear speech, though poor audio can be slower to fix than to type.

Why do meetings take so much longer?

Overlapping speech, cross-talk and speaker identification all require repeated rewinding, which is where the time goes.

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