> ## Documentation Index
> Fetch the complete documentation index at: https://upstash.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# HINCRBYFLOAT

> Increment float value of a field.

Use `HINCRBYFLOAT` to add a floating point number to the value of a hash field and get the result.

The stored value and the increment are parsed as double precision floats, and a missing field or key counts as `0`. The increment may be negative, and there is no separate decrement command. A value that is not a valid number returns an error.

The reply is the new value as a string, which client libraries usually decode into a native number. Note that the result is stored in the same textual form, so repeated increments of values that cannot be represented exactly in binary floating point accumulate the usual rounding error; keep money and similar quantities in integer units and use [`HINCRBY`](/docs/redis/commands/hash/hincrby).

## Syntax

```redis theme={"system"}
HINCRBYFLOAT <key> <field> <increment>
```

## Arguments

| Argument      | Required | Repeatable | Description                                                 |
| ------------- | -------- | ---------- | ----------------------------------------------------------- |
| `<key>`       | Yes      | No         | Redis key targeted by the command.                          |
| `<field>`     | Yes      | No         | Hash field name.                                            |
| `<increment>` | Yes      | No         | Amount to add to the field; may be a floating-point number. |

## Important points

* The value is always returned as a bulk string, in both RESP2 and RESP3. Client libraries commonly decode it to a language number.

## Response

The reply reports the result of the operation. Error replies have the same shape in RESP2 and RESP3 and are surfaced as exceptions by the SDKs below.

| Protocol | Reply       |
| -------- | ----------- |
| RESP2    | Bulk string |
| RESP3    | Bulk string |

<Note>
  Client libraries often decode bulk strings, maps, sets, and numeric strings into language-native values. The table describes the Redis wire reply.
</Note>

## Examples

TCP examples use the TLS `REDIS_URL` from the Upstash console. REST examples use `UPSTASH_REDIS_REST_URL` and `UPSTASH_REDIS_REST_TOKEN`.

<AccordionGroup>
  <Accordion title="Redis CLI" icon="terminal">
    ```bash theme={"system"}
    HINCRBYFLOAT my-key field 1.5
    ```
  </Accordion>

  <Accordion title="@upstash/redis" icon="node-js" iconType="brands">
    ```ts theme={"system"}
    import { Redis } from "@upstash/redis";

    const redis = Redis.fromEnv();

    await redis.hset("key", {
      field: 20,
      });
    const after = await redis.hincrby("key", "field", 2.5);
    console.log(after); // 22.5
    ```
  </Accordion>

  <Accordion title="upstash_redis" icon="python" iconType="brands">
    ```python theme={"system"}
    from upstash_redis import Redis

    redis = Redis.from_env()
    result = redis.hincrbyfloat("my-key", "field", 1.5)
    print(result)
    ```
  </Accordion>

  <Accordion title="ioredis" icon="node-js" iconType="brands">
    ```ts theme={"system"}
    import Redis from "ioredis";

    const redis = new Redis(process.env.REDIS_URL!);
    const result = await redis.hincrbyfloat("my-key", "field", "1.5");
    console.log(result);
    ```
  </Accordion>

  <Accordion title="node-redis" icon="node-js" iconType="brands">
    ```ts theme={"system"}
    import { createClient } from "redis";

    const client = await createClient({ url: process.env.REDIS_URL })
      .on("error", console.error)
      .connect();
    const result = await client.hIncrByFloat("my-key", "field", 1.5);
    console.log(result);
    ```
  </Accordion>

  <Accordion title="redis-py" icon="python" iconType="brands">
    ```python theme={"system"}
    import os
    import redis

    client = redis.from_url(os.environ["REDIS_URL"])
    result = client.hincrbyfloat("my-key", "field", 1.5)
    print(result)
    ```
  </Accordion>

  <Accordion title="go-redis" icon="golang" iconType="brands">
    ```go theme={"system"}
    package main

    import (
        "context"
        "fmt"
        "os"

        "github.com/redis/go-redis/v9"
    )

    func main() {
        opts, err := redis.ParseURL(os.Getenv("REDIS_URL"))
        if err != nil {
            panic(err)
        }
        client := redis.NewClient(opts)
        result, err := client.HIncrByFloat(context.Background(), "my-key", "field", 1.5).Result()
        if err != nil {
            panic(err)
        }
        fmt.Println(result)
    }
    ```
  </Accordion>

  <Accordion title="jedis" icon="java" iconType="brands">
    ```java theme={"system"}
    import java.net.URI;

    import redis.clients.jedis.Jedis;

    try (Jedis jedis = new Jedis(new URI(System.getenv("REDIS_URL")))) {
      Object result = jedis.hincrByFloat("my-key", "field", 1.5);
      System.out.println(result);
    }
    ```
  </Accordion>

  <Accordion title="redis-rs" icon="rust" iconType="brands">
    ```rust theme={"system"}
    use redis::TypedCommands;

    fn main() -> redis::RedisResult<()> {
        let url = std::env::var("REDIS_URL").expect("REDIS_URL is not set");
        let client = redis::Client::open(url)?;
        let mut connection = client.get_connection()?;

        let result = connection.hincr("my-key", "field", 1.5)?;
        println!("{result:?}");
        Ok(())
    }
    ```
  </Accordion>
</AccordionGroup>


## Related topics

- [HINCRBYFLOAT](/docs/redis/sdks/py/commands/hash/hincrbyfloat.md)
- [Overview](/docs/redis/sdks/py/commands/overview.md)