# How tall is a trillion in \$1 bills?

This is an interesting question that many people may wonder about when they hear the term “trillion dollars” thrown around. Though a trillion is a massive number, visualizing it can provide some perspective on just how large it really is. In this article, we’ll go through some quick facts and figures to wrap our heads around the height of a trillion \$1 bills stacked up.

## Quick Overview of How Big a Trillion Is

First, let’s go over some quick facts to understand the scale of a trillion:

• A trillion is 1,000 billion or 1,000,000 million.
• It’s a 1 followed by 12 zeros: 1,000,000,000,000.
• Counting to a trillion at a rate of 1 number per second would take over 31,000 years.
• A trillion seconds is over 31,000 years.
• The diameter of the sun is about 1.4 million km. You could line up 1 trillion dollar bills end to end from the earth to the sun over 71,000 times.

As you can see, a trillion is an enormously large number that’s difficult for our human brains to fully comprehend. But let’s try to visualize it by seeing how tall a stack of a trillion \$1 bills would be.

## Key Facts About Dollar Bills

To estimate the height, we first need to know some key facts about US dollar bills:

• A \$1 bill is about 155 mm (6.14 in) wide.
• A \$1 bill is about 66 mm (2.61 in) tall.
• A \$1 bill is about 0.11 mm (0.0043 in) thick.

Knowing the dimensions of a single dollar bill is important for calculating the total height of a stack of one trillion of them.

## How Many \$1 Bills in a Trillion?

Now let’s figure out how many actual dollar bills are in a trillion dollars:

• There are 100 pennies in a dollar.
• There are 100 cents in a dollar.
• So there are 10,000 pennies in \$100 (100 x 100).
• There are 100,000 pennies in \$1,000 (10,000 x 10).
• There are 100,000,000 pennies in \$1,000,000 (100,000 x 1,000).
• That means there are 100 trillion pennies in \$1 trillion (100,000,000 x 1,000,000).
• With each dollar bill equivalent to 100 pennies, there are 1 trillion \$1 bills in \$1 trillion.

In simple terms, \$1 trillion would be 1 trillion actual \$1 bills stacked up.

## Calculating the Height of 1 Trillion \$1 Bills

Now let’s use the dimensions of a single \$1 bill to estimate the total height of a stack containing 1 trillion of them:

• A \$1 bill is 0.0043 inches thick.
• With 1 trillion \$1 bills stacked up, the total thickness is:
• 0.0043 in x 1,000,000,000,000 bills = 4,300,000,000 inches
• There are 12 inches in 1 foot. So 4.3 billion inches is:
• 4,300,000,000 in ÷ 12 in/ft = 358,333,333 ft
• There are 5,280 feet in 1 mile. So 358 million feet is:
• 358,333,333 ft ÷ 5,280 ft/mile = 67,852 miles

In total, a stack of 1 trillion \$1 bills would be over 67,000 miles high!

## Visualizing the Height of a Trillion Dollars

To visualize how incredibly tall a stack of 1 trillion \$1 bills would be, here are some height comparisons:

Height Visual Comparison
67,852 miles Over 2.7 times the circumference of Earth at equator (24,901 miles)
67,852 miles Over 5 times the altitude at which the International Space Station orbits Earth (250 miles)
67,852 miles Over 15 times the altitude of Mt. Everest above sea level (5.5 miles)
67,852 miles Over 749 times the height of the Burj Khalifa in Dubai, the world’s tallest building (0.827 miles/4,309 ft)

As these comparisons show, a stack of 1 trillion \$1 bills would be extraordinarily tall, reaching over a quarter of the way to the moon!

## Conclusion

In summary, while a trillion dollars is an abstract concept, visualizing it as a stack of dollar bills helps put its enormous scale in perspective. By looking at the dimensions of a single dollar bill and doing some calculations, we determined that a stack of 1 trillion \$1 bills would be over 67,000 miles high!

Compared to Earth’s circumference and dimensions of man-made structures, the height of 1 trillion dollars is truly mind-boggling. This exercise illustrates how astronomical 1 trillion really is. Next time you hear a trillion dollars mentioned in the news, recall the towering height of 67,000 miles and you’ll understand just how massive that amount of money is.