What is volume in crypto? Trading volume explained
Volume in crypto is the total amount of a coin or token traded over a given period, usually the last 24 hours. It is shown either in units of the asset (say, 12,000 BTC) or as a total value in euros or dollars, and it tells you how much trading activity there is.
High volume usually means many buyers and sellers, tighter prices and easier trading. Low volume means a thinner market, where a single order can move the price.
What is volume in crypto, in plain words?
Trading volume measures how much of an asset changed hands. Every time a buyer and a seller agree on a trade, that trade is added once to the total. A coin with a 24-hour volume of €50 million had trades worth €50 million matched in the last day.
Here is a small worked example. Say three trades happen on a BTC/EUR market in one hour:
| Trade | Amount | Price | Value |
|---|---|---|---|
| 1 | 0.5 BTC | €50,000 | €25,000 |
| 2 | 0.2 BTC | €50,100 | €10,020 |
| 3 | 0.3 BTC | €49,900 | €14,970 |
| Total | 1.0 BTC | €49,990 |
The volume for that hour is 1.0 BTC, or a total value of €49,990. Volume counts trades, not people: the same three trades could involve six traders or two.
You’ll see volume in three places: on the exchange’s trading screen for each pair, as bars under a price chart, and on data sites that add up volume across many exchanges for the whole crypto market.
Why trading volume matters
Trading volume matters because it shows how easy an asset is to trade and how much conviction is behind a price move.
Volume and liquidity
Volume and liquidity are related but not the same. Volume is how much was traded; liquidity is how much you could trade right now without moving the price. High trading volume usually goes together with a deep order book, so your order fills close to the quoted price.
On a low-volume coin, that’s often not the case. Say you place a €1,000 market order and the sell side of the order book looks like this:
- €300 offered at €1.00
- €300 offered at €1.02
- €400 offered at €1.05
You get 300 + 294 + 381 = about 975 tokens, an average price of about €1.026, instead of 1,000 tokens at €1.00. That’s roughly €25, or 2.5%, lost to slippage before any fee.
Volume and market cap
Market cap shows what a coin is worth in total; volume shows how much of it trades. A coin with a €1 billion market cap and €2 million in daily volume is hard to sell in size, however big the market cap looks. Comparing the two gives a rough feel for how actively a coin trades. Our page on market cap explains how the first number is calculated.
How to read volume with price movements
In technical analysis, traders read volume alongside price movements to judge how strong a trend is. The common rules of thumb:
| Price | Volume | What traders often read into it |
|---|---|---|
| Rising prices | Increasing volume | Many buyers back the move; the uptrend may last |
| Rising prices | Decreasing volume | Fewer buyers join; the price trend may be weakening |
| Falling prices | Increasing volume | Heavy selling pressure; the fall may continue |
| Falling prices | Decreasing volume | Selling is fading; a reversal may come |
Rising volume and volume surges
Sudden volume surges often come with news: an exchange listing, a hack, a regulatory decision or a big price move. When heavy volume pushes the price out of its recent trading range, traders call it a breakout. When prices rise on low volume, a few large orders can be enough to move the market, and the price change may not hold.
Decreasing volume
Decreasing volume during a declining market can mean sellers are running out. Decreasing volume while prices rise can mean the opposite: the buying is drying up. Neither is a reliable signal on its own, and none of these patterns predicts what happens next.
Volume indicators traders use
Volume indicators turn raw volume into a signal. Common ones:
- Volume weighted average price (VWAP): the average price of an asset over a period, weighted by how much traded at each price. Large traders use it to judge whether they bought well.
- On-balance volume (OBV): a running total that adds volume on up days and subtracts it on down days.
- Chaikin money flow: combines price and volume to estimate buying and selling pressure over a period.
These are tools for active traders. If you invest €100 a month for the long term, the main thing volume tells you is whether you can trade a coin at a fair price.
Crypto volume vs stock market volume
Volume works the same way in the stock market, but it’s counted differently. For a share, volume is usually the number of shares traded on a day, and most of it happens on a few regulated exchanges with set opening hours. A stock’s price and volume are reported centrally.
The crypto market trades around the clock on hundreds of exchanges, with no official consolidated figure. Each data site picks which exchanges to include, so the total volume you see for the same coin can vary a lot from one site to another.
What is a good trading volume?
There’s no fixed number. What counts is volume relative to your own order and to the coin’s size: if your €500 buy is a tiny fraction of the pair’s daily volume, you’ll barely move the price. Volume that is very small compared with the market cap is a warning sign.
Volume vs open interest
Open interest is a futures and derivatives figure: the total number of contracts still open at a given moment. Volume counts every contract traded during the period, including ones opened and closed the same day. Rising open interest means new positions are being added; rising volume alone just means more trading activity.
Fake volume and why it matters in the EU
Crypto volume can be inflated. On some unregulated exchanges, the platform or a project trades with itself (“wash trading”) to look busier than it is and climb the rankings. Reported volume across data sites can therefore differ a lot for the same coin.
For EU investors this matters in three ways:
- Market abuse rules. MiCA bans market manipulation, including fake trades that give a false impression of supply or demand, for crypto assets traded on EU platforms.
- Licensed venues. Since 1 July 2026 only MiCA-authorised providers may serve EU residents. Volume on a platform that isn’t licensed tells you little about whether your money is protected.
- Your investment decision. High volume is not a quality label. Pump-and-dump schemes generate huge volume for a short time, then collapse. Our entry on market manipulation shows the common tricks.
How to use volume as a beginner
Use volume as a practical filter, not a crystal ball:
- Check the 24-hour volume on the exact pair you plan to trade, such as BTC/EUR, not just the global figure.
- Prefer pairs where your order is a tiny share of daily volume.
- Use limit orders on low-volume coins, so you control the price you pay.
- Be wary of coins with sudden volume spikes and no clear news.
The bottom line
Volume is the total amount of an asset traded in a period, usually 24 hours. Higher volume generally means easier trading and fairer prices, while low volume means slippage and a price that’s easier to push around. Read it together with price, check it per pair, and never treat volume alone as a reason to buy.
Related terms
Questions people ask
What does 24-hour trading volume mean in crypto?
It is the total value of a coin or token that changed hands in the last 24 hours, added up across one exchange or many. A 24-hour volume of €50 million means trades worth €50 million were matched in that period.
Is higher volume good in crypto?
Usually, for you as a trader. Higher volume tends to come with tighter spreads and less slippage, so you can buy or sell close to the quoted price. It doesn't mean the coin is a good investment or that its price will rise.
Does volume mean buying or selling?
Both. Every trade has a buyer and a seller, and volume counts each trade once. Volume tells you how much activity there was, not whether buyers or sellers were in control.
Which crypto has the highest volume?
Bitcoin, ether and the large dollar stablecoins such as USDT usually have the highest trading volume. Rankings change daily, so check a data site for current figures.
Can crypto trading volume be faked?
Yes. Some unregulated exchanges and projects inflate volume through wash trading, where the same party buys and sells to itself. Market manipulation like this is banned under MiCA for platforms in the EU.