Average Reading Speed: What the Research Actually Says

225 words per minute. You'll see that number on this site, on Medium, on every reading time calculator on the internet. But where does it actually come from — and how much should you trust it?

# Where 225 WPM Comes From

The figure traces back to studies from the 1960s and 70s measuring silent reading speed in adult populations. The most widely cited work puts the average college-educated adult at roughly 200–250 words per minute for general prose. 225 became the round-number consensus that tools and publishers adopted, and it's stuck ever since.

It's a reasonable estimate for average adult reading of standard prose. The trouble is that reading speed varies enormously depending on who's reading, what they're reading, and how.

# How Speed Varies by Reader

## By Age

Children read significantly slower — a 7-year-old might manage 80 WPM, while by secondary school most readers reach 150–200 WPM. Adults plateau in their twenties and the average holds reasonably steady through middle age before declining slightly in older adults.

## By Reading Ability

The spread within adults is wide. Struggling readers sit around 100–150 WPM. The average is 200–250. Proficient readers hit 300+ WPM. Speed readers and trained professionals can push further, though comprehension typically drops off sharply above 400 WPM regardless of technique.

Reader Type	Typical WPM	Comprehension
Struggling reader	100 – 150	Variable
Average adult	200 – 250	Good
Proficient adult	300 – 350	Good
Speed reader	400 – 700	Declining
Skimming	700+	Surface only

# How Speed Varies by Content

The 225 WPM figure assumes comfortable, general-audience prose. Reading speed drops significantly for denser material. Technical documentation, academic papers, legal text, and anything requiring re-reading all slow readers down considerably. A developer reading API docs might average 100–150 WPM. A reader skimming a news article might hit 400 WPM.

## Screen vs Print

Research consistently shows that reading on screens is 10–30% slower than reading equivalent text on paper. Factors include glare, scrolling behaviour, lower resolution (historically), and the tendency to scan rather than read linearly online. As screen quality has improved this gap has narrowed, but it hasn't disappeared.

# Does the Exact Number Matter?

For reading time estimates — not really. The goal of showing a reader "5 min read" isn't precision, it's a commitment signal. It tells readers whether to engage now or save for later. Whether the real figure is 4.5 or 5.5 minutes doesn't change that decision.

What matters more is consistency. If you always use 225 WPM across your content, readers develop a calibrated sense of what your reading times mean. That trust is more valuable than a marginally more accurate number.

# Speaking Speed: Why It's Different

Speaking speed averages around 130–150 words per minute for conversational speech — ReadCalc uses 140 WPM. Public speakers typically aim for 120–160 WPM, slowing down for emphasis and pausing between points. Podcasters and audiobook narrators tend to sit at 150–170 WPM. This is why a 1,000-word blog post that takes 4 minutes to read will take 7 minutes to record as a voiceover.

# The Practical Takeaway

225 WPM is a defensible, widely-used average that works well for general audience content. If your audience skews technical, consider using 150–175 WPM for a more honest estimate. If you're writing for casual readers or news content, 250–275 WPM is reasonable.

The number you choose matters less than choosing one and sticking to it. Readers notice when your time estimates feel off — too short feels rushed, too long feels padded. Calibrate once, then be consistent.