TIMEDIF – Find Durations in Hours, Minutes, Seconds, etc.
Find the difference between times on different days. The output can be formatted in years, months, weeks, days, etc.
Add-on
StaySorted: Auto-Sort Google Sheets Rows | Free Trial
Keep a table of data sorted automatically.
TripTally – Calculate Distances in Google Sheets
Calculate the distance between two addresses in your Google Sheet.
Insert Special Characters – Google Sheets Add-on
Use this add-on to insert special characters into your spreadsheet.