# HLEN












Returns the number of fields contained in the hash stored at `key`.

## Examples


HSET myhash field1 "Hello"
HSET myhash field2 "World"
HLEN myhash


## Return information

{{< multitabs id="hlen-return-info" 
    tab1="RESP2" 
    tab2="RESP3" >}}

[Integer reply](../../develop/reference/protocol-spec#integers): the number of fields in the hash, or 0 when the key does not exist.

-tab-sep-

[Integer reply](../../develop/reference/protocol-spec#integers): the number of the fields in the hash, or 0 when the key does not exist.