When you write a formula in a Notion database property and click Save, the system may refuse to save and show a generic syntax error message. The error does not tell you exactly where the mistake is located inside the formula. This happens because Notion does not highlight the faulty character or line in the … Read more
Notion formulas can sort arrays using the built-in sort() function, but the default behavior may not match your exact needs. By default, sort() arranges numbers in ascending order and text alphabetically. When you need a different order, such as sorting by a property value, date, or custom priority, you must supply a custom comparator function. … Read more
Notion formulas are powerful tools for automating calculations and data transformations across your workspace. However, many users notice that the same formula returns different results when viewed on the Notion mobile app compared to the desktop app. This inconsistency often stems from differences in how each platform handles date-time functions, locale settings, and formula evaluation … Read more
You want to generate an ICalendar RRULE string directly inside a Notion database so that exported events repeat correctly in calendar apps like Google Calendar or Outlook. Notion formulas can construct text strings but have no native RRULE builder. This article shows how to combine Notion properties and formula functions to output a valid recurrence … Read more
Notion’s contains() formula checks if one text string appears inside another. By default, this function performs a case-sensitive match, meaning it treats uppercase and lowercase letters as different characters. This behavior can cause false negatives when you need to compare text regardless of capitalization, such as matching user input, imported data, or mixed-case tags. This … Read more
You may notice that a Notion formula property returns only part of the expected text, cutting off at a specific character count. This truncation happens because Notion formulas have a hard limit on the length of the string they can output. The maximum output length for a formula property is 2,000 characters; any content beyond … Read more
You need a Notion formula that calculates how many buffer days remain between today and the next critical path milestone in your project. Many project managers track task dependencies manually, which leads to missed deadlines when one delay cascades through the schedule. A buffer days formula gives you a real-time count of slack available before … Read more
You see the error “Cannot convert number to date” in a Notion formula property and the expected date value does not appear. This error occurs when a formula returns a number but Notion expects a date data type. Notion formulas are strict about data types and do not automatically convert numbers to dates. This article … Read more
Notion formulas provide a slice() function that extracts a substring from a text property. When you need to extract characters from the end of a string, using a negative index for the end parameter lets you specify positions relative to the last character. This article explains how slice() interprets negative indices and how to use … Read more
When you write a Notion formula that tries to reference a property whose name includes a special character such as a hyphen, slash, apostrophe, or parenthesis, the formula often returns an error or fails to save. This happens because Notion’s formula syntax treats certain characters as operators or delimiters, breaking the reference. This article explains … Read more