Convert Time to Decimal in Google Sheets: A Step-by-Step Guide

Jason Gong
June 6, 2024

Use HOUR, MINUTE, and SECOND functions to convert time to decimal.

By the way, we're Bardeen, we build a free AI Agent for doing repetitive tasks.

Since you're working with Google Sheets, you might love our GPT in Spreadsheets feature. It can automate data analysis and conversions, saving you lots of time.

Converting time to decimal format in Google Sheets is a crucial skill for various applications, from tracking employee hours to analyzing time-based data. In this step-by-step guide, we'll walk you through the process of converting time to decimal using Google Sheets formulas. By the end of this article, you'll have a solid understanding of how to input time data, apply the conversion formula, and troubleshoot common issues.

Understanding Time Format in Google Sheets

In Google Sheets, time is represented using a 24-hour format, where the integer part represents the date and the fractional part represents the time. This format is known as a serial number, with December 30, 1899, being the starting point (serial number 1).

Here are some key points to understand about time representation in Google Sheets:

  • Time values are decimal numbers between 0 and 0.99988, representing the fraction of a 24-hour day
  • 0 represents 12:00:00 AM, while 0.99988 represents 11:59:59 PM
  • Dates are stored as integers, with 1 representing December 30, 1899

It's important to distinguish between time and datetime data types in Google Sheets. Time data only includes the time portion (e.g., 14:30), while datetime data includes both the date and time (e.g., 5/1/2023 14:30).

For more advanced Google Sheets tips, consider using GPT for Google Sheets to automate your data analysis and improve productivity.

Step-by-Step Guide to Converting Time to Decimal

To convert time to decimal in Google Sheets, follow these steps:

  1. Enter the time data into a cell using the correct format: HH:MM:SS or HH:MM. For example, enter "14:30" for 2:30 PM.
  2. If your time data is in a text format, use the TIMEVALUE function to convert it to a recognized time format. For example, if cell A1 contains "2:30 PM", use the formula =TIMEVALUE(A1) to convert it.
  3. To convert time to decimal hours, use the following formula:
    =HOUR(time) + (MINUTE(time) / 60) + (SECOND(time) / 3600)
    Replace "time" with the cell reference containing your time data.

Here's what each part of the formula does:

  • HOUR(time) extracts the hour value from the time.
  • (MINUTE(time) / 60) converts the minutes to a fraction of an hour.
  • (SECOND(time) / 3600) converts the seconds to a fraction of an hour.

The formula adds these three components together to give you the time in decimal hours. For more advanced integrations, you can connect Google Sheets with other tools to automate workflows.

Use Bardeen to integrate Google Sheets and save time by automating your repetitive tasks.

Practical Applications and Troubleshooting

Converting time to decimal in Google Sheets has many practical applications, such as:

  • Payroll processing: Calculate the total hours worked by employees, including overtime.
  • Project tracking: Monitor the time spent on tasks and compare it against budgeted hours.
  • Data analysis: Perform calculations and create visualizations based on time data.

When working with time conversions, you may encounter some common issues:

  1. Incorrect cell formatting: Ensure that the cells containing time data are formatted as "Time" or "Duration" to avoid errors.
  2. Wrong formula inputs: Double-check that you're using the correct cell references and function syntax in your formulas.
  3. Unexpected results: If your converted values seem incorrect, verify that your original time data is entered in a recognized format (HH:MM:SS or HH:MM).

To troubleshoot these issues:

  • Check the cell formatting and change it to "Time" or "Duration" if necessary.
  • Review your formulas for typos or incorrect cell references.
  • Ensure that your time data is entered in a valid format, and use the TIMEVALUE function for text-based inputs.

By understanding these practical applications and common issues, you can effectively use time-to-decimal conversions in your Google Sheets projects. For more advanced tasks, consider using Excel integrations to automate your workflows.

Automate Google Sheets Time Data with Bardeen

While converting time to decimal in Google Sheets can be done manually as described above, automating this process can significantly enhance efficiency, especially for repetitive tasks or large datasets. Automation using Bardeen not only saves time but also reduces the potential for errors, making your data processing more reliable. Here are a few examples of how Bardeen can automate tasks in Google Sheets that complement the process of managing and analyzing time data:

  1. Get a daily summary of your emails and save to Google Sheets: This playbook can be used to automate the collection of time-related data from your emails and save it directly into Google Sheets, streamlining your time tracking and data analysis processes.
  2. Copy a list of meetings during a timeframe to a Google Sheet: Perfect for managing schedules and analyzing time spent in meetings, this playbook automates the process of transferring your Google Calendar events into a Google Sheet.
  3. Copy a table from Airtable to Google Sheets every day: If you manage time data or schedules in Airtable, this playbook automates the daily transfer of this data into Google Sheets, making it easier to convert and analyze time in decimal format.

These automations can greatly enhance your productivity by streamlining the collection and management of time data in Google Sheets. Get started with Bardeen by downloading the app at

Convert time to decimal with Bardeen

Bardeen's AI Agent automates time conversions and other repetitive tasks in Google Sheets.

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