How long does it take to transcribe an hour of audio?

30 September 2026 · 6 min read

Longer than an hour, always, and how much longer depends on things you can judge before you start: how clear the recording is, how many people talk, how much they overlap, whether the client wants every “um” kept, and how much specialist vocabulary is involved. The ratios quoted online vary so widely that they are only useful as a warning. Your own ratio, measured over a few files, is the number to quote from.

What changes the ratio

Before timing anything, it helps to know which factors move the number, so you can write them down next to each file:

• Audio quality. A clean close microphone and a phone on a café table are different jobs.
• Number of speakers. Two people taking turns is simpler than a panel talking over each other.
• Style. Clean verbatim (tidied up) and true verbatim (every false start and filler) take different amounts of time.
• Vocabulary. Legal, medical and technical recordings mean looking things up.
• Timestamps and speaker labels. Each adds work.
• Starting from a machine draft. If you correct an automatic transcript instead of typing from scratch, the work shifts from typing to listening and fixing. It is still work, and it still needs timing.

A note with these six things for each file turns a pile of hours into something you can compare.

Measuring your own ratio

The ratio is simple: hours worked divided by hours of audio. Getting the first number honestly is the hard part, because transcription happens in bursts between other jobs, and because replaying one unclear sentence ten times does not feel like work while you are doing it.

Here is a method that takes almost no effort:

1. Note the audio length and the six factors when you accept the file.
2. Let your Mac record the working time (below).
3. Count proofreading. The final listen-through is part of the job, not an extra.
4. Divide at the end. Total hours on the file, divided by hours of audio.

After five or six files you will see your ratios cluster by type: clean interviews in one range, messy group recordings in another. That is the start of your price list.

Letting the Mac keep the clock

Punchcard is a Mac menu bar app that notices which app is in front during your day, by name only, and prints a receipt at the closing time you set: the top five apps with the time on each, the rest as MISC, and a day total. There is no timer to start or pause, so forgetting to press start in the middle of a busy morning is not a problem.

For transcribers, the receipt usually shows the text editor or transcription app you type in, plus the audio player if it is a separate app. The editor line is most of the job, and the player line is scrubbing and replaying. If you work on a transcription platform in the browser, switch on “Itemize websites” in Settings and the platform prints as its own line, rather than disappearing into one browser total. That works in the supported browsers, which Settings lists with their status. Safari time stays on a single line, because Safari’s scripting cannot tell a Private window from a normal one.

Tracking never expires and the CSV export works without a license. The first two printed receipts are free; printing after that is a $9 one-time license.

Confidential recordings

A lot of transcription is confidential: legal interviews, medical dictation, research participants, workplace investigations. Clients sometimes ask directly what software is running on the machine that handles their files.

Punchcard records app names only out of the box: never window titles, document names, keystrokes or screen contents. With itemizing on, it adds site names, never full addresses or page titles. So the record might say you spent three hours in your editor, but never which file, which client, or a single word you typed. The record is one file on your Mac, and there is no account and no cloud. The only network use is activating a license once and a quiet check of it at launch; the free version makes no network calls at all.

That makes the record something you could show a client if they asked how long a job took, without it revealing anything about the job. Tracking therapy session time on a Mac when notes cannot leave the room looks at the same question from a clinician’s side.

Separating one file from another

Punchcard has no projects or tags, so it will not split the day by file or client on its own. Three ways to get per-file numbers anyway:

• Work one file at a time where you can, and note the clock time when you switch. The receipt covers the rest.
• Use the CSV. It has one row per session with start, end, app and seconds. Filter to the stretch when you worked on a given file and add up the seconds.
• Accept a day-level number for short files. If you did four ten-minute clips in one morning, the morning’s total divided by forty minutes of audio is still an honest ratio.

Export your time data to CSV and keep it forever covers what is in the file and how to open it.

Turning the ratio into a rate

Once you know your ratio for a type of recording, pricing per audio minute stops being a guess:

1. Pick the hourly rate you need, as if you were paid by the hour.
2. Multiply it by your ratio for that type of recording. That is your price per audio hour.
3. Divide by sixty for a per-minute price, and add surcharges for the factors that pushed the ratio up: extra speakers, true verbatim, poor audio, timestamps.

Review your ratios every few months. Faster typing, better shortcuts and a good machine draft all pull them down, and you should know when your price per minute has started paying you more per hour than it used to. If it has gone the other way, because recent clients send harder audio, that is worth knowing too.

Questions

Does Punchcard know how long my audio is? No. It records time spent in apps, not what those apps were playing. Write down the audio length yourself when you take on the file.

Is there an iPhone version for checking transcripts on the go? No. Punchcard records the Mac only. If you do some proofreading on a phone or tablet, add that time by hand.

Does my data leave the Mac? No. App names, site names, minutes and receipts stay in one local file. There is no account, no analytics and no cloud.