---
title: "ZCARD"
url: "https://docs.yugabyte.com/stable/yedis/api/zcard/"
---

# ZCARD

## Synopsis

**`ZCARD key`**

This command returns the number of `members` in the sorted set at `key`. If `key` does not exist, 0 is returned.

- If `key` is associated with non sorted-set data, an error is returned.

## Return value

The cardinality of the sorted set.

## Examples

You can do this as shown below.

```sh
$ ZADD z_key 1.0 v1 2.0 v2
```

```
(integer) 2
```

```sh
$ ZADD z_key 3.0 v2
```

```
(integer) 0
```

```sh
$ ZCARD z_key
```

```
(integer) 2
```

```sh
$ ZCARD ts_key
```

```
(integer) 0
```

## See also

[`zadd`](/stable/yedis/api/zadd/ "zadd"), [`zrange`](/stable/yedis/api/zrange/ "zrange"), [`zrangebyscore`](/stable/yedis/api/zrangebyscore/ "zrangebyscore"), [`zrem`](/stable/yedis/api/zrem/ "zrem"), [`zrevrange`](/stable/yedis/api/zrevrange "zrevrange")