Why odd numbers are more persuasive

If I said reading this email would take 2-3 minutes, would you believe me?

What about if I said it would take 139 seconds. More persuasive?

Studies show that odd numbers are more convincing than round ones.

They feel more precise, researched and genuine.

We’re more likely to buy from a company with ‘41,856 happy customers’ than ‘40,000+’.

So how can you use odd numbers in your everyday work? Here are 4.5 ways:

1) When you’re asking colleagues for help

People react better when the ask feels small and concrete:

• “Could you review this by 4.15pm?”

• “Can you spend 7.5 minutes checking the slides?”

Odd numbers shrink the task in people’s minds and make the deadline feel real and urgent.

2) When you’re reporting upwards

Precision boosts trust:

• “We improved process efficiency by 23%.”

• “We’ve reduced drafting time by 41 minutes per report.”

3) When you’re talking pricing

If you quote or estimate for anything, even internally, avoid neat, suspiciously tidy numbers. Instead try:

• “The project will cost £4,865.”

• “We need 11 hours for the next phase.”

Odd numbers feel calculated, not invented in the lift on the way to the meeting.

4) When you’re using social proof

Odd numbers make your credibility signals land harder:

• “7,143 people read last month’s newsletter.”

• “53% of clients upgraded after the pilot.”

• “We’ve trained 1,127 professionals this year.”

Specificity boosts your authority.

4.5) Ok, I admit I added this just to make it an odd number. But for this theory to work in practice, your numbers must be genuine otherwise you’ll quickly lose credibility.

So give some of these tactics a go this week. In a world of round numbers, don’t be afriad to be a little…odd.