What Is a Float Data Type in Tableau?


Heather Bennett

The float data type is an essential part of Tableau. It is used to store numerical values with decimal points. In this article, we will explore what exactly a float data type is and how it can be used effectively in Tableau.

What Is a Float Data Type?

A float data type, also known as a floating-point number, is a numeric data type that represents real numbers. It can store values with decimal points and can range from approximately -3.4 x 10^38 to 3.4 x 10^38. Floats are commonly used when precision is required for calculations or when dealing with scientific or financial data.

Using Float Data Types in Tableau

In Tableau, floats are widely used to represent measures or continuous numerical values. They are often used in calculations, aggregations, and visualizations.

Creating a Float Field

To create a float field in Tableau, you need to follow these steps:

  • Open your Tableau workbook.
  • Select the data source tab.
  • Locate the field you want to change to a float data type.
  • Right-click on the field and select “Change Data Type”.
  • Choose “Float” from the list of available data types.

Working with Floats in Calculations

Once you have created a float field, you can use it in various calculations within Tableau. For example:

  • Addition: You can add two or more float fields together to calculate their sum.
  • Subtraction: You can subtract one float field from another to find the difference.
  • Multiplication: You can multiply float fields to get the product.
  • Division: You can divide one float field by another to calculate the ratio.

Visualizing Float Data

In Tableau, you can create visualizations using float data types to gain insights and present your data effectively. Floats can be used in various chart types such as line charts, scatter plots, and bar charts.

By representing your data visually, you can easily identify trends, outliers, and patterns within your float values.


The float data type in Tableau is a powerful tool for working with numerical data that requires precision. By understanding how to create and use float fields effectively, you can enhance your analytical capabilities and create insightful visualizations.

Remember to utilize the versatility of floats in calculations and take advantage of their visual representation options in Tableau.

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