Age calculation is a common requirement in many AppSheet applications, whether you’re building a dating app, a healthcare app, or simply need to track important milestones. AppSheet provides a straightforward way to calculate age using custom expressions. In this blog post, we’ll walk you through the process of calculating a person’s age in AppSheet using a simple and efficient formula.
Age Calculation Formula in AppSheet
The age calculation formula in AppSheet combines date and time functions to accurately determine a person’s age in years and months. Here’s the formula:
FLOOR(HOUR(TODAY() - [DOB]) / 365 / 24) & " years " & FLOOR(MOD((HOUR(TODAY() - [DOB]) / 24), 365) * 12 / 365) & " months "
Let’s break down the formula:
(HOUR(TODAY() - [DOB]) / 24)returns the number of days in the duration between today’s date and the date of birth (DOB).MOD((...), 365)finds the remainder in days after removing the full years.FLOOR(MOD(...) * 12 / 365)converts those remaining days into months, dropping the decimal part.
Step 1: Identify the Data Source
- Ensure that your AppSheet app is connected to a data source containing the date of birth (DOB) information for individuals. This could be a spreadsheet or a database.
Step 2: Create a Virtual Column
- In the AppSheet app editor, navigate to the “Data” section and select the table or data source containing the DOB field.
- Click on “Columns” and then “Add a new column.” Choose “Virtual” as the column type.
Step 3: Configure the Virtual Column Expression
- In the virtual column settings, give your virtual column a name, such as “Age.”
- Enter the age calculation formula provided above as the expression for this virtual column.
Step 4: Display the Age in Your App
- Add the newly created virtual column to the views where you want to display the calculated age. You can use text fields or labels to show the age information to your app users.
Step 5: Test and Fine-Tune
- Preview your app and verify that the age calculation works as expected. Test it with different dates of birth to ensure accuracy.
- Fine-tune the formatting and appearance of the age display to match your app’s design and user experience.
