# Understanding Numerical Units on Exchanges

You need to understand these numerical units on exchanges, otherwise you'll get confused when reading market data. These units appear constantly in market data, especially when dealing with large transactions and market capitalization statistics.

**The most common unit correspondences:**

1K is one thousand, the smallest unit; 1M is one million; 1E (yi, meaning one hundred million) is easy to confuse with E notation, but it simply means 100 million; 1B is one billion; 1T is one trillion. Pay special attention to 1e—sometimes written as 1E—both are the same thing and both represent 100 million.

From K to T, the numerical magnitudes increase progressively. When viewing large datasets like trading volume and total market capitalization on exchanges, you basically need to use these units to express numbers, otherwise the digits look scary with endless zeros that make your eyes hurt.

So next time you see 1e or other letters like these, don't panic—it's just a counting unit. Simply remember the corresponding number and you're good.