Many people get confused by these letters when they first start watching charts on an exchange, especially when checking trading volume or market cap. Today, I’ll briefly break down the most common counting units you’ll see on exchanges.

The most basic is K—1K represents 1,000. This is probably something most people already know. Next is M: you need to pay attention here—1M equals 1,000,000, not just “one million” in a simple way. Many beginners ask what 1m means; actually, it means 1,000,000. In numbers, that’s 1,000,000.

Going up from there is E, which represents 100,000,000—100,000,000. Even larger is B, where 1B equals 1,000,000,000, which in digits is 1,000,000,000. Finally there’s T, the biggest one—1T represents the trillion-level, i.e., 10,000,000,000,000.

In real trading, when you look at a coin’s trading amount or market cap, you often see these units. For example, a coin’s 24-hour trading volume might be labeled as 5B—that means a trading volume of 5,000,000,000. Or a project’s total market cap might be listed as 2T—that means 20,000,000,000,000. Understanding these units is especially important for quickly reading market data, so you don’t have to convert everything in your head every time.