You type at 40 words per minute. You speak at 150 words per minute. That's nearly four times faster.
If you're like most professionals, you're still spending hours typing emails, authoring documents, sending Teams or Slack messages, and texting colleagues. You should be using voice notes. The numbers are shocking. Let's look at the research.
How much time do professionals lose to typing?
Studies show the average worker types over 4.3 million words annually. That's a staggering figure. Research from Typing.com found that employees spend an average of 22.3 hours per week typing, with some industries (technology, finance, legal) spending over 80% of their workweek on keyboards. Legal professionals alone spend close to two-thirds of their workweek typing.
Let's break down the maths. If you type 3 hours daily at the average professional speed of 40 words per minute, that's 7,200 words. Speaking those same words takes just 48 minutes. You save 2 hours and 12 minutes every single day.
That's 11 hours per week. 44 hours per month. Over 500 hours per year. If you're billing out at $500/hour, that's $250k in lost revenue opportunity annually. I have set out how speaking saves 500 hours a year in more detail elsewhere, but the headline figure holds.
The science behind speaking speed
Research measuring speaking rates across 17 different languages found typical speeds of 184 words per minute when reading aloud. English speakers specifically average 150-160 words per minute in normal conversation. The fastest documented speaker, Steve Woodmore, reached 637 words per minute. Clearly that's not practical for most of us, but just imagine his level of productivity.
Studies from 2024 confirm the average conversational English speaking rate sits between 130-150 words per minute. Most people fall comfortably in the 110-170 words per minute range. That's still two to four times faster than typing.
But does voice-to-text actually work?
This is where sceptics might raise eyebrows. Fair question. Modern AI transcription systems have improved dramatically. Research from 2024-2025 shows:
- Top-tier systems (OpenAI Whisper, Google Cloud Speech-to-Text, Deepgram) achieve 85-99% accuracy in optimal conditions
- A German study testing OpenAI's Whisper found 72.5% of transcripts were "perfect or almost perfect"
- Google's Cloud Speech-to-Text API produced perfect transcripts in about 50% of cases
- Medical and legal applications requiring high accuracy regularly use these systems with human review for critical documentation
- Wispr Flow achieves 4x faster completion of writing tasks than traditional typing
Accuracy depends heavily on audio quality, background noise, and accent clarity. But in controlled office environments with decent microphones, accuracy rates above 90% are standard. Senior lawyers already know this instinctively, because dictation was the original voice-first workflow long before AI arrived.
The actual time savings
Here's where it gets interesting. Research shows that by increasing typing speed from 40 to 50 words per minute, workers save over 90 hours per year. Now imagine jumping from 40 words per minute typing to 150 words per minute speaking.
One study found that university students (even the least proficient typists) spend 1.7 hours daily on keyboards. Professional typists in specialised roles can spend even more. The time savings from voice input aren't theoretical. They're measurable and significant.
What will you do with 500 extra hours?
Let's put this in perspective. 500 hours per year is:
- Get 2 hours back every day to be with family or friends
- Enough time to read one entire book every week
- More than enough to build a side business
- The equivalent of 12 full work weeks
- Restoring your work-life balance
Workers earning $100,000 or more per year spent over 87% of their workweek typing, according to research. If you use your reclaimed time for high-value activities, the financial return could be substantial.
The reality check
Voice input isn't perfect for everything. Programming code requires precision. Complex spreadsheets need visual manipulation. But emails? Meeting notes? Social media posts? Documentation? These are prime candidates.
Personally, I tested Wispr Flow for 3 months. I strongly recommend it.
The workflow change is real. Instead of typing long emails (and the email load on law firms is larger than most partners measure), I record voice notes that get transcribed instantly. Instead of typing out AI prompts, I dictate what I want done, hands-free. Instead of typing social media posts, I talk naturally and AI cleans it up.
The time savings compound daily. Wispr Flow will save you over 2 hours daily. If you use that time for high-value activities, it could generate tens of thousands, even hundreds of thousands, in additional income annually.
The evidence is clear
Research consistently shows:
- Typing is slow: average professional speed is 40-60 wpm
- Speaking is fast: average conversational speed is 130-150 wpm
- Professionals type too much: 2-4 hours daily for most knowledge workers
- Modern voice AI works: 85-99% accuracy in good conditions
- Time savings are real: over 500 hours annually for average users
The technology has caught up with the promise. Voice-to-text is no longer a novelty. It's a legitimate productivity tool backed by solid research.
Frequently asked questions
How much faster is speaking than typing?
The average professional types at around 40 words per minute, while normal English conversation runs at 130 to 160 words per minute. That makes speaking roughly two to four times faster than typing. Three hours of daily typing at 40 words per minute produces 7,200 words, and speaking the same words takes about 48 minutes.
How accurate is voice-to-text transcription now?
Top-tier systems such as OpenAI Whisper, Google Cloud Speech-to-Text and Deepgram reach 85 to 99% accuracy in optimal conditions. Accuracy depends on audio quality, background noise and accent clarity, but in a controlled office environment with a decent microphone, rates above 90% are standard. Medical and legal users pair these systems with human review for critical documents.
What tasks are best suited to voice notes?
Emails, meeting notes, social media posts, documentation and AI prompts are prime candidates, because they are prose that can be spoken naturally and tidied up afterwards. Voice input is not suited to everything. Programming code requires precision and complex spreadsheets need visual manipulation, so those tasks still belong on the keyboard.
How many hours a year can voice input save?
If you type three hours a day, switching to speech saves 2 hours and 12 minutes daily, which adds up to 11 hours a week, 44 hours a month and over 500 hours a year. At a billing rate of $500 an hour, that is around $250,000 of revenue opportunity annually, or the equivalent of 12 full working weeks.
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