public/get_contract_size

Retrieves the contract size (also known as contract multiplier) for a given instrument. The contract size determines how many units of the underlying asset one contract represents.

This value is essential for calculating position values, margin requirements, and P&L calculations. Different instruments may have different contract sizes.

Try in API console

cURL

cURL

curl --request GET \
  --url https://test.deribit.com/api/v2/public/get_contract_size

200

{
  "jsonrpc": "2.0",
  "result": {
    "contract_size": 10
  },
  "id": 123
}

Query Parameters

instrument_name · string · required

Instrument name Unique instrument identifier

Example:

"BTC-PERPETUAL"

Response

200 - application/json

Success response

jsonrpc · enum<string> · required

The JSON-RPC version (2.0)

Available options: 2.0

result · object · required

Hide child attributes

result. contract_size · integer · required

Contract size, for futures in USD, for options in base currency of the instrument (BTC, ETH, ...)

Example:

10

id · integer

The id that was sent in the request