Free-form entry eg: '125000km', '1.5 million inches', '$67bn', '45000000 AUD', 100years', '123456789', '1 trillion', '1.5e6', '25 million kg'

Numbers in the News

Notable numbers we have spotted recently

Is That a Big Number? (the book)

Is That a Big Number is now a book, published by Oxford University Press. (Google ISBN  0198821220 to find many online booksellers). Although there is serious purpose behind the book - to explore how we think about numbers and how we can understand big numbers - it’s written in a light and engaging style.

Entertaining, full of practical examples, and memorable concepts, Is That A Big Number? renews our relationship with numeracy. If numbers are the musical notes with which the symphony of the universe is written, and you’re struggling to hear the tune, then this is the book to get you humming again.


For the Love of Numbers

Number-led writings for the truly geeky

Logs: Level-Up your Number Sense

This article about log scales and how to think about them (and how they naturally reflect how we think about big numbers) pretty much nails it, for me. Using log scales is an essential tool in your mental numeracy toolbox.

Thank you, Chalkface blog.

Thank you, too, Vi Hart for your passionate and engaging video on the topic.

Getting to Grips with Big

Stop worrying and learn to love big numbers

Habits of Highly Mathematical People

This thought-provoking blog post accurately describes one of the most important reasons for mathematical (and other) education: for the habits of thought and not always only for the content.

Numeracy, and a numerate approach to understanding the world, becomes a habit also. Keep asking: “is that a big number?”

Landmark Numbers

Prominent and memorable numbers

How much do things weigh?

We like the attitude at

Take a bunch of everyday stuff (not just clothes) and weigh them. Why? Just to see how much they weigh! (and along the way maybe help internalise a sense of relative weights).

More ...

How tall is tall?

Around the world in how long?

Early Infographics

How many tennis balls does it take to fill St Paul’s?

How Heavy was King Kong?

Visualising 1 in a million

Scienceogram: UK Science Spending in Context

How Crowded is the World?

One in a Thousand

Stand on Zanzibar

The Power of a Thousand

Is That A Big Number? - The Book

Yes, there's now an engaging, informative book based on these numbers. Oxford University Press: July 2018.

Click here to learn more about it.