---
title: "Field data types"
slug: "field-data-types"
updated: 2025-09-05T16:56:22Z
published: 2025-09-05T16:56:22Z
canonical: "docs.supermetrics.com/field-data-types"
stale: true
---

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

# Field data types

Data types are Supermetrics classifications for the type of data the field should return, what it represents, and what format it is in.

## Syntax

`type.[group].[class].[format]`

| type | Primitive data type |
| --- | --- |
| group | Group name for the kind of data the value represents |
| class | Group classification for the kind of data the value represents |
| format | Additional format information, when available |

## Considerations

Please note that classifications are provided only as additional information based on what the source API is expected to deliver. **We do not** perform type casting or other normalizations to the data by default. Therefore, classifications and returned data can be subject to inconsistencies.

## Data types

- [Currency](/v1-api/apidocs/field-data-types#currency)
- [Duration](/v1-api/apidocs/field-data-types#duration)
- [Geographical](/v1-api/apidocs/field-data-types#geographical)
- [Language](/v1-api/apidocs/field-data-types#language)
- [Number](/v1-api/apidocs/field-data-types#number)
- [Person](/v1-api/apidocs/field-data-types#person)
- [Primitive](/v1-api/apidocs/field-data-types#primitive)
- [Text](/v1-api/apidocs/field-data-types#text)
- [Time](/v1-api/apidocs/field-data-types#time)

### **Currency**

| Value | Description | Example |
| --- | --- | --- |
| float.currency.value | Currency value as a float | 499.01 |
| int.currency.value | Currency value as an integer | 499 |
| string.currency.code | Currency code | "EUR" |

### Duration

| Value | Description | Example |
| --- | --- | --- |
| int.duration.seconds | Length in seconds | 127 |

### Geographical

| Value | Description | Example |
| --- | --- | --- |
| string.geo.city | City name | "London" |
| string.geo.continent | Continent name | "Asia" |
| string.geo.coordinates | Latitude and longitude combined | "51.5074, -0.1278" |
| string.geo.country | Country name | "Finland" |
| string.geo.country.twolettercode | Country code as alpha-2 from ISO 3166-1 | "FI" |
| string.geo.latitude | Latitude coordinate | "51.5074" |
| string.geo.longitude | Longitude coordinate | "-0.1278" |
| string.geo.metro | Metropolitan area | "Helsinki" |
| string.geo.region | Region name | "Virgin Islands, U.S." |
| string.geo.street | Street address | "Downing Street" |
| string.geo.zip | ZIP code or postal code | "10121" |

### Language

| Value | Description | Example |
| --- | --- | --- |
| string.language.locale | Language locale from RFC 1766 | "pt_BR" |
| string.language.twolettercode | Language code as alpha-2 from ISO639-1 | "SV" |
| string.language.value | Generic language | "English (United States)" |

### Number

| Value | Description | Example |
| --- | --- | --- |
| float.number.percentage | Percentage value between 0 and 100 as a float | 80.5 |
| float.number.ratio | Ratio value between 0 and 1 as a float | 0.02 |
| float.number.value | Generic number value as a float | 0.3 |
| int.number.percentage | Percentage value between 0 and 100 as an integer | 51 |
| int.number.value | Generic number value as an integer | 57 |

### Person

| Value | Description | Example |
| --- | --- | --- |
| string.person.age | Age | "10 - 15" |
| string.person.gender | Gender | "female" |

### Primitive

| Value | Description | Example |
| --- | --- | --- |
| bool | Simple boolean | true |

### Text

| Value | Description | Example |
| --- | --- | --- |
| string.text.email | Email address | "...@supermetrics.com" |
| string.text.json | JSON encoded data | "["value A", "value B"]" |
| string.text.percentage | Percentage value between 0 and 100 | "100%" |
| string.text.phone | Phone number | "+358..." |
| string.text.url | URL address | "https://supermetrics.com/..." |
| string.text.value | Generic text value | "Value" |

### Time

| Value | Description | Example |
| --- | --- | --- |
| string.time.date | Date formatted as YYYY-MM-DD | "2017-02-03" |
| string.time.datetime | Date and time formatted as YYYY-MM-DD HH:MM:SS | "2017-08-12 12:33:01" |
| string.time.dayofmonth | Day of month | "8" |
| string.time.dayofweek | Weekday number and name combined. Numbered from 0 Sunday to 6 Saturday. | "0 Sunday" |
| string.time.dayofweekiso | Weekday number and name combined. Numbered from 1 Monday to 7 Sunday from ISO 8601. | "7 Sunday" |
| string.time.gmtoffset | GMT offset | "GMT+0300" |
| string.time.hm | Time for hours and minutes | "03:57" |
| string.time.hms | Time for hours, minutes and seconds | "03:57:25" |
| string.time.hour | Hour without leading zeroes | "5" |
| string.time.minute | Minutes without leading zeroes | "7" |
| string.time.month | Month name | "April" |
| string.time.quarter | Year quarter | "3" |
| string.time.timezone | Timezone name from timezone database names | "Europe/Helsinki" |
| string.time.week | Week number | "07" |
| string.time.weekiso | Week number using ISO 8601 | "04" |
| string.time.year | Year formatted as YYYY | "2017" |
| string.time.yearmonth | Year and month number combined | "2017 \| 12" |
| string.time.yearweek | Week year and number combined | "2017 \| 05" |
| string.time.yearweekiso | Week year and number combined using ISO 8601 | "2017 \| 06" |