Getting started
What the site shows, where to find it, and how to read a coin’s prices in a minute. It’s free, with nothing to sign up for.
The site compares what 28 exchanges charge for the same coin at the same moment, from their own public market data, read in your browser. It’s free, and there’s no account to make.
The four parts of the site
The header leads to each of them.
- Markets: every coin in one table, priced by each exchange you have on: 120 coins on spot and 142 perpetuals. On spot it shows the cheapest exchange to buy each coin, or the best to sell it; on perpetuals, where funding costs least to hold a position. The tabs over the table switch between Spot, Perpetuals and Futures & options.
- Exchanges: the exchanges ranked against each other on the markets they share, and a page for each one.
- Signals: where one exchange’s price, or its funding, sits far enough from another’s to matter after fees.
- Blog: guides to spreads, funding, order books and the rest of what the pages show.
A coin’s page in a minute
Choose a coin in the table, or type its name in Find a coin: press / to get there from anywhere. Its page has a card for each exchange that lists it, with the price at the middle of its order book, its best bid and ask, the spread between them and the day’s volume. Under the cards come the price chart, Liquidity, the Trade simulator and the Combined order book. How to read a coin’s page goes through each.
Which exchanges you see
A first visit has Kraken, Coinbase, OKX and Hyperliquid on. The count in the header, such as 4/28, opens the list of every exchange: tick one to add it. Choose which exchanges to compare has the rest.
What the site isn’t
It doesn’t trade, hold money or ask you to sign in to anything: it reads the prices anyone can see, and compares them. Nothing on it is financial advice.
On the site
Related articles
- Choose which exchanges to compare
The exchange switch in the header picks the exchanges every page compares. Four are on to start with; add any of the others, or every one a page can show.
- How to read a coin’s page
A coin’s page puts every exchange’s price side by side: the middle of each order book, the spread, the depth, what a market order would really get, and the books merged into one.
- What the labels, dots and colours mean
Every word and dot the pages put beside an exchange or a price, and the rule behind each one: Live, Behind, No reply, Thin, Low volume, Quote, Closed and the rest.
From the blog
- How to compare two crypto exchanges, market by market
Rather than one coin, set two exchanges side by side on every market they share: how often each has the better price, and by how much.
- Which crypto exchange is cheapest? It depends on the coin
No exchange has the lowest price on every coin. How to find the cheapest crypto exchange for the coin you're trading, and why the answer keeps changing.
Still stuck?
Report a problem or send Feedback & feature requests: each starts a post to @coinsmash_ on X, which you can change before you send it, or not send at all.
The site never messages you first, and never asks for keys, seed phrases, passwords or money.