Market Cap Explained: Why a Cheap Coin Isn't Always Cheap

"It's only ₦2. If it reaches ₦100, I'll be rich."

You've probably seen some version of this in a group chat. The maths looks simple: buy 50,000 coins for ₦100,000, wait for ₦100, and you're holding ₦5 million. The question nobody asks is what the whole coin would need to be worth for that to happen.

That question is market cap. Once you understand it, you'll never look at a "cheap" coin the same way again.

Price means little on its own

Imagine two pizzas of exactly the same size. One is cut into 8 slices and the other into 8,000. A slice of the second pizza costs almost nothing, but you're not getting a bargain. You're getting a crumb.

Coins work the same way. A coin's price only means something next to how many coins exist. That's why people look at market cap:

Market cap = price × circulating supply

Two made-up coins

These coins and numbers are invented to show the maths.

	Coin A	Coin B
Price per coin	₦1	₦10,000
Coins in circulation	500 billion	1 million
Market cap	₦500 billion	₦10 billion

Coin A is 10,000 times cheaper per coin, yet as a whole it's valued 50 times higher than Coin B. If you were asking which one has more room to grow, the price per coin would have pointed you the wrong way.

Back to the ₦2 coin

Say the coin from the group chat has 1 trillion coins in circulation (made up again). At ₦2, its market cap is ₦2 trillion. At ₦100, it would be ₦100 trillion.

For the price to rise 50 times, the market has to value the whole project 50 times higher, and that's assuming no new coins are released along the way. Sometimes that happens. Much more often, it doesn't. Before you get excited about a target price, multiply it by the supply and ask whether that total makes sense for what the project actually does.

Circulating, total and maximum supply

Price-tracking sites usually show three supply figures:

• Circulating supply: coins that exist and can be traded right now.
• Total supply: coins created so far, including ones still locked up for the team, investors or future rewards.
• Maximum supply: the most that can ever exist. Bitcoin's is 21 million. Some coins, such as Ethereum and Dogecoin, have no fixed maximum.

The gaps between these numbers are where surprises come from.

Fully diluted value

Fully diluted value (FDV) is the price multiplied by the maximum supply, or by the total supply where there's no maximum. It shows what the coin would be worth if every coin were already trading.

Made-up example: Coin C trades at ₦100 with 100 million coins in circulation, so its market cap is ₦10 billion. But its maximum supply is 1 billion coins, so its FDV is ₦100 billion.

Nine in every ten Coin C tokens haven't reached the market yet. As they're released to the team and early investors, many will be sold, and the price has to absorb all that new supply. A big gap between market cap and FDV is a reason to read the coin's release schedule carefully. Our guide to tokenomics explains vesting and unlocks.

Market cap isn't money in the bank

Market cap is a calculation, not a pile of cash. If only a small part of a token's supply is trading and someone buys a little at a high price, the market cap shoots up on paper. Nobody could sell anywhere near that much at that price.

That's how new tokens, especially memecoins, can show huge market caps with very little real money behind them. Always check trading volume and liquidity alongside market cap. Our guide to analysing liquidity shows how.

What the size of a market cap tells you

People often sort coins into large caps (the biggest, most traded coins, such as Bitcoin and Ethereum), mid caps and small caps. There's no official cut-off, but the pattern is useful:

• Large caps usually have deep markets, so you can buy and sell without moving the price much. They still swing, sometimes hard, but they've lived through several market cycles.
• Small caps can move much further in either direction. A little new money can double the price, and a little selling can halve it. Far more of them fade away completely.

A low market cap is often sold as "more room to grow". It's also more room to fall, with less of a track record to judge it by.

A high price doesn't mean expensive either

It works the other way too. A coin with a high price per unit isn't out of reach, because you can buy a fraction of it. One bitcoin divides into 100 million satoshis, so you can own a few thousand naira worth of Bitcoin. Our satoshi converter turns sats into naira, and satoshis explained covers the rest.

Using market cap in your research

1. Find the price, circulating supply, maximum supply, market cap and FDV on a price-tracking site.
2. Compare market cap with FDV. A large gap means a lot of supply is still to come.
3. Compare the market cap with coins that do a similar job. Is this one valued sensibly next to them?
4. Multiply any target price by the supply. Does the total sound realistic?
5. Check trading volume and liquidity, so you know the market cap reflects real trading.

These steps slot into our 15-minute coin research checklist.

This is general education, not financial advice.

Next time someone says "it's only ₦2"

Ask what it's worth in total, and how many coins are still to come. When you want to know what your own coins are worth in naira, check the live crypto to naira rates, then download the KWIQ app to sell any of the 20+ coins it supports for naira with zero fees. If your phone has no room for another app, create a free account on the web instead.