Volume Monitor
Live crypto data · 8 exchanges

Crypto Order Book Depth and Liquidity

How much is resting in the order books of the 20 perpetual futures with the most open interest on Binance and Bybit: bid and ask USD within ±0.1%, 0.5%, 1% and 2% of mid, the bid/ask imbalance, and what a $1M market order would cost in basis points. Live snapshots from the exchanges' public order-book APIs, refreshed every couple of minutes.

Order books are being fetched from Binance and Bybit; the tables fill in within a few seconds.

0 order books500 levels per sideSource: Binance and Bybit public APIs

Thinnest book ±1%
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no data yet
Cheapest $1M market order
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no data yet
Most bid-heavy ±1%
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no bid-heavy book
Most ask-heavy ±1%
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no ask-heavy book

Binance order book depth · top 20 perps by OI

bids over asks, USD within each band of mid · click a header to sort
Coin # OI Spread ±0.1% ±0.5% ±1% ±2% Imbalance $1M buy $1M sell
Order books are being fetched from Binance; refresh in a few seconds.

Bybit order book depth · top 20 perps by OI

bids over asks, USD within each band of mid · click a header to sort
Coin # OI Spread ±0.1% ±0.5% ±1% ±2% Imbalance $1M buy $1M sell
Order books are being fetched from Bybit; refresh in a few seconds.

How to read it. Each band cell shows the resting bid USD (top) and ask USD (bottom) within that distance of the mid price. ≥ $X (truncated) means the exchange's 500 returned levels end inside the band, so the real figure is at least that. Imbalance is (bids − asks) / (bids + asks) within ±1%, or within the range the snapshot reaches on both sides when that is less. $1M buy / sell is the average fill of a $1M market order versus mid, in basis points, half-spread included and fees excluded.

The 20 USDT perpetuals with the most open interest on each exchange (see the open interest screener). Snapshots from Binance's and Bybit's public order-book APIs, refreshed every couple of minutes while the page is viewed; nothing is stored. Resting orders can be pulled at any time. Not financial advice.

Order book depth FAQ

What is order book depth?

Order book depth is how much is waiting to be traded near the current price: the USD value of the resting limit orders on the bid side (buyers) and ask side (sellers) within a given distance of the mid price. A deep book absorbs large market orders with little price impact; a thin one moves sharply, which is where liquidation cascades start.

What does bid/ask imbalance mean?

Imbalance is (bids - asks) / (bids + asks) within ±1% of mid. Positive: more resting buy orders than sell orders, negative: the reverse. Resting orders can be pulled at any moment, so imbalance is a snapshot of intent, not a signal on its own. When the snapshot does not reach ±1% on both sides, imbalance is measured over the range it does reach, shown under the figure.

Why do some values say "≥ $X (truncated)"?

Each exchange returns at most the 500 best price levels per side. For the most liquid perps (BTC, ETH) those 500 levels end within about 0.1-0.3% of mid, so a wider band holds at least what we can see and probably much more. Those values are lower bounds and are marked, never shown as exact. The same applies to a $1M order cost when the returned levels hold less than $1M.

How is the $1M market-order cost calculated?

We walk the ask side (for a buy) or the bid side (for a sell) from the best price, filling $1M of notional level by level, and compare the average fill price with the mid price, in basis points (1 bps = 0.01%). It includes half the spread and ignores fees, hidden orders and the book moving while you trade.

Which markets are covered, and how often is it updated?

The 20 USDT-margined perpetuals with the most open interest on each of Binance and Bybit, from the open interest this site tracks. A fresh snapshot of each book is taken from the exchanges' public APIs every couple of minutes while the page is viewed. Nothing is stored and nothing here is financial advice.