# Using custom formatting

## Formatting numbers

Custom number format relies on [numeral.js](http://numeraljs.com/#format) in order to provide you with the ability to easily customise your metrics formatting.

The following table should be read this way:

* Number is an example number
* Format is the format you should type in the custom format input on Whaly
* Output show how your metric will display using the custom format

**Numbers formats**

| Number     | Format     | Output        |
| ---------- | ---------- | ------------- |
| 10000      | 0,0.0000   | 10,000.0000   |
| 10000.23   | 0,0        | 10,000        |
| 10000.23   | +0,0       | +10,000       |
| -10000     | 0,0.0      | -10,000.0     |
| 10000.1234 | 0.000      | 10000.123     |
| 100.1234   | 00000      | 00100         |
| 1000.1234  | 000000,0   | 001,000       |
| 10         | 000.00     | 010.00        |
| 10000.1234 | 0\[.]00000 | 10000.12340   |
| -10000     | (0,0.0000) | (10,000.0000) |
| -0.23      | .00        | -.23          |
| -0.23      | (.00)      | (.23)         |
| 0.23       | 0.00000    | 0.23000       |
| 0.23       | 0.0\[0000] | 0.23          |
| 1230974    | 0.0a       | 1.2m          |
| 1460       | 0 a        | 1 k           |
| -104000    | 0a         | -104k         |
| 1          | 0o         | 1st           |
| 100        | 0o         | 100th         |

**Currency formats**

| Number    | Format      | Output     |
| --------- | ----------- | ---------- |
| 1000.234  | $0,0.00     | $1,000.23  |
| 1000.2    | 0,0\[.]00 $ | 1,000.20 $ |
| 1001      | $ 0,0\[.]00 | $ 1,001    |
| -1000.234 | ($0,0)      | ($1,000)   |
| -1000.234 | $0.00       | -$1000.23  |
| 1230974   | ($ 0.00 a)  | $ 1.23 m   |

**Bytes formats**

| Number        | Format   | Output    |
| ------------- | -------- | --------- |
| 100           | 0b       | 100B      |
| 1024          | 0b       | 1KB       |
| 2048          | 0 ib     | 2 KiB     |
| 3072          | 0.0 b    | 3.1 KB    |
| 7884486213    | 0.00b    | 7.88GB    |
| 3467479682787 | 0.000 ib | 3.154 TiB |

**Percentages formats**

| Number      | Format    | Output   |
| ----------- | --------- | -------- |
| 1           | 0%        | 100%     |
| 0.974878234 | 0.000%    | 97.488%  |
| -0.43       | 0 %       | -43 %    |
| 0.43        | (0.000 %) | 43.000 % |

**Time formats**

| Number | Format   | Output   |
| ------ | -------- | -------- |
| 25     | 00:00:00 | 0:00:25  |
| 238    | 00:00:00 | 0:03:58  |
| 63846  | 00:00:00 | 17:44:06 |

**Exponential formats**

| Number       | Format   | Output   |
| ------------ | -------- | -------- |
| 1123456789   | 0,0e+0   | 1e+9     |
| 12398734.202 | 0.00e+0  | 1.24e+7  |
| 0.000123987  | 0.000e+0 | 1.240e-4 |

## Formatting durations

Custom duration format relies on [moment duration format](https://github.com/jsmreese/moment-duration-format) in order to provide you with the ability to easily customise your metrics formatting.

To format a duration you can use the following tokens : 

| Category     | Token | Output       |
| ------------ | ----- | ------------ |
| milliseconds | S     | 1 2 3 ...    |
|              | SS    | 01 02 03 ... |
| seconds      | s     | 1 2 3 ...    |
|              | ss    | 01 02 03 ... |
| minutes      | m     | 1 2 3 ...    |
|              | mm    | 01 02 03 ... |
| hours        | h     | 1 2 3 ...    |
|              | hh    | 01 02 03 ... |
| days         | d     | 1 2 3 ...    |
|              | dd    | 01 02 03 ... |
| weeks        | w     | 1 2 3 ...    |
|              | ww    | 01 02 03 ... |
| months       | M     | 1 2 3 ...    |
|              | MM    | 01 02 03 ... |
| years        | y     | 1 2 3 ...    |
|              | yy    | 01 02 03 ... |

Escape token characters within the template string using square brackets.

### Examples 

| Input (in seconds) | format               | output         |
| ------------------ | -------------------- | -------------- |
| 61                 | mm:ss                | 01:01          |
| 61                 | m \[min], s \[sec]   | 1 min, 1 sec   |
| 61                 | mm \[min], ss \[sec] | 01 min, 01 sec |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.whaly.io/data-management/explorations/metrics/using-custom-formatting.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.