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How Much is a TRILLION?

By | Last update: 25 April 2024

A trillion is one million million (or one thousand billion) and has twelve zeroes: 1,000,000,000,000.

If you owned a trillion dollars and spent $1,000,000 each day, it would take you just under 2,740 years to spend it all.

It's all about the money...

On 2 August 2018, Apple became the first publicly traded U.S company to reach a market cap of $1 trillion. Two years later its value had doubled to over $2 trillion, and less than 18 months after that it broke through the $3 trillion mark for the first time. 1

Other tech behemoths are not far behind with their eye-watering market caps. Microsoft is worth just under $3 trillion, Alphabet (Google) $2 trillion and Amazon $1.9 trillion. And, we now need to mention semiconductor company Nvidia, which had a market value of around $100 billion in 2019. It now boasts a net worth of $2.19 trillion thanks to the AI revolution.

Check out this video of how big a trillion dollars is if you make a stack of $100 bills.

Who is the richest person on Earth?

According to the Forbes rich list, the richest person on Earth is currently Bernard Arnault, Chairman of LVMH Moët Hennessy Louis Vuitton. He's worth $210bn. 4

Before he bought Twitter, and before Tesla's share price dropped, the world's richest person was entrepreneur and business magnate, Elon Musk. At the peak, he was worth around $275bn (now $201bn). Let's put that figure in words: two-hundred-and-seventy-five billion dollars.

Now again in numbers: $275,000,000,000. If you tried to withdraw that amount of money from the bank, not only would it cause some serious repetitive strain injuries for the cashiers, but the dosh as a stack of $100 dollar bills would reach 175 miles high.

Most commercial airplanes fly at 30,000 feet, which is 5.7 miles, so imagine $100 bills reaching thirty times higher than the clouds and you'll be getting somewhere close to $275bn.

And now imagine what sum of money could make these mega-billionaires look like paupers. Yes, today, we are talking in trillions.

One hundred trillion Zimbabwe dollars
In 2009, Zimbabwe introduced a Z$100 trillion note. Lots of noughts didn't mean lots of value, however. Due to hyperinflation it was only worth about US$30 (£20).

How many millions are in a trillion?

A trillion is a million million for both American and modern British English definitions. A trillion dollars is a million dollars multiplied by a million. Or if you prefer, a thousand billion. It has 12 zeroes: 1,000,000,000,000. Makes your eyes cross, doesn't it?

How many billions are in a trillion?

One trillion is the equivalent of 1,000 billion in the modern American system. Up until the 1970s, the UK used the long-scale meaning of trillion, which was 1 million billion (18 zeroes). However, in 1974 Harold Wilson's UK government made the decision to switch to using the modern American meaning to prevent confusion. 5

A trillion:


A trillion in time

When we look at millions, billions and trillions in time scales, the size of a trillion really becomes apparent. It would take us over 350 lifetimes, at an average of 90 years each, to live a trillion seconds (assuming no cryogenic shenanigans).

  • A million seconds is 12 days.
  • A billion seconds is 31 years.
  • A trillion seconds is 31,688 years.

Fast facts:

According to Apple, over three trillion photos were taken worldwide using iPhones in 2021. That's over 95,000 photos taken every second of every day. In the time you've spent reading this paragraph, over a million more photos have been captured. 6

How does 1 trillion dollars stack up?

If $1 million in $100 dollar bills stacks up to 40 inches (3.3 feet: kind of underwhelming to look at, really!), and $1 billion is 40,000 inches (that's 0.63 miles high: much more impressive!), $1 trillion in $100 dollar bills is 40,000,000 inches high, which is 631 miles. Suddenly Arnault's and Elon's fortunes seem smaller, although one wonders whether we'll still be saying that in 5 or 10 years time.

A trillion dollars in $100 notes height comparison infographic

Now, Arnault and Musk are taking a bit of a roasting here, purely because they've got more money than anyone on the planet. If a trillionaire existed, though, they would be taking the flack instead.

In the UK, the average salary is £27,000, so even if Average Joe didn't pay any tax, student loans, rent, food bills, heating, travel bills - or any expenditure at all - it would take them 37,037,037 years to save a trillion pounds.

In the US, where the average annual income is around $50,000, saving a trillion bucks (with no outgoings) would take 20,000,000 years. 37 million years, 20 million years... That's a lot longer than humans have even existed, yo.

So, no wonder that trillion is such a gargantuan figure that nobody actually owns it. Although, UK resident Gareth Hughes came close in 2022 when he received a cheque, sent out in error by energy distributor Northern Powergrid, for £2 trillion. "Bank it, quick!"

Although no one alive currently owns a trillion, we can look at examples who owe it. Now that's some serious credit card debt!

Trillions of debt

Much of the West has been economically blighted since the huge financial crash of 2008, and indeed, that was a catalyst in the UK's national debt rising from around £0.5 trillion to more than £1 trillion in the space of just 3 years. Currently it's around £2.6 trillion, and climbing. 2

The USA has a gross national debt (that's government debt and public debt combined) of around $34.5 trillion. 3 Using $100 bills, they would require a stack of cash that's 21,135 miles high.

Even if the kind folk in Australia allowed the pile to begin on their land, and drilled a tunnel through the Earth's core to stack the money all the way through the diameter of the planet until it popped out on the opposite side in Washington DC, it still wouldn't be enough cash (it would be short by about 1/2, in fact).

This fantastic video from Demonocracy shows how monstrous this amount of money is.

So sure, yeah, you started off reading this and feeling nauseous that you don't have Bernard Arnault's or Elon Musk's spending power, but you can also rest easy knowing that you don't have someone knocking on your door, looking for trillions-worth of video games and ramen noodles to repossess.

Calculator by Alastair Hazell. Reviewed by Chris Hindle.


  1. Apple becomes first U.S. company to reach $3 trillion market cap. CNBC
  2. UK government debt and deficit. Office for National Statistics (UK)
  3. What is the national debt?. Fiscal Data (Treasury.gov)
  4. The world's real-time billionaires. Forbes
  5. Statistical literacy guide. House of Commons Library (UK)
  6. Apple Event - September 7. YouTube.

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