Interactive

Amazing

Discover something surprising about yourself, the world, and everyday life.

Your Life in Numbers

How many days have you lived? How many hours asleep, how many weekends, how long until your next birthday? Enter one date and find out — privately, in your browser.

Find your numbers →

Mystery of the Day

Geography · Easy

Where is the deepest known place in Earth's oceans?

Solve today's mystery →

What If?

What if you saved a little every month, read 10 pages a day or walked 5,000 steps? Change the numbers and watch them add up.

Try What If? →

How Long Would It Take?

To save for a goal, read a book, walk a distance or count to a million — set a pace and get the day you would finish.

Work it out →

More Amazing experiences

What If? What if I save $100 every month? See what $100 a month adds up to over the years — as plain savings, or with a growth rate you choose. What If? What if I save $5 every day? A small daily saving, added up over months and years. What If? What if I increase my savings every year? Start with a monthly amount and raise it a little each year — see how much faster the total grows. What If? What if I read 10 pages every day? Ten pages a day, added up — in pages and in books. What If? What if I walk 5,000 steps every day? Your daily steps added up — and roughly how far they would take you. What If? What if I spend 2 hours every day on one activity? Two hours a day — on a phone, a hobby, a commute or a new language — added up into days and years. How Long Would It Take? How long would it take to save a certain amount? Your goal, what you can save and how often — and the date you get there. How Long Would It Take? How long would it take to read a book? Pages in the book, pages a day — and the day you turn the last one. How Long Would It Take? How long would it take to walk a certain distance? Any distance at your own pace, a few hours a day. How Long Would It Take? How long would it take to reach a target at a steady daily rate? Anything you can count — tasks, videos, kilometres — at a pace you set. How Long Would It Take? How long would it take to count to a million? Out loud, one number at a time — non-stop, and at a few hours a day.

What makes it Amazing

Everything here is something you do, not something you read: you enter a date or a number and get an answer about your own life, or you test yourself against a question about the world.

Every calculation shows the assumptions it rests on, and the ones that are guesses — how much you sleep, how fast you walk — are yours to change. Every Mystery of the Day cites the source its answer comes from. There are no made-up statistics and no invented facts.