ICS Calendar Invite Generator
Developer ToolsGenerate a downloadable .ics calendar invite for any event. Enter the title, date, time, and location, then copy or save the file to add to any calendar.
What is a ICS Invite?
An ICS Calendar Invite Generator creates a standard .ics calendar file from basic event details — title, date, time, duration, location, and description — that can be opened directly by any major calendar application. The iCalendar format is a widely supported open standard, which means a file generated here works identically whether the recipient uses Google Calendar, Outlook, Apple Calendar, or most other calendar software.
This generator handles the iCalendar syntax for you, including the specific date and time formatting the standard requires. It pairs well with the vCard Generator for sharing contact details alongside an event invite.
How to use this ICS Invite calculator
- Enter the Event Title.
- Enter the Event Date in YYYY-MM-DD format.
- Enter the Start Time in 24-hour HH:MM format.
- Set the Duration in minutes.
- Optionally add a Location and Description.
- Copy the generated content and save it as a file with a
.icsextension (for example,event.ics). - Open the file on your device, or attach it to an email for recipients to add to their own calendar.
Formula & Methodology
The generator assembles your inputs into the iCalendar (RFC 5545) VEVENT structure, calculating the end time from your start time and duration. End Time = Start Time + Duration (minutes) Before, with title "Team Meeting", date 2026-07-01, start time 10:00, and 60-minute duration: After:BEGIN:VCALENDAR VERSION:2.0 PRODID:-//thecalcu.com//ICS Calendar Invite Generator//EN BEGIN:VEVENT UID:...@thecalcu.com DTSTAMP:20260628T000000Z DTSTART:20260701T100000 DTEND:20260701T110000 SUMMARY:Team Meeting END:VEVENT END:VCALENDARSave this output asevent.ics, and any standard calendar app will recognise it as a one-hour event starting at 10:00 AM on 1 July 2026.
Frequently Asked Questions
An ICS file (.ics) is a standard calendar file format, based on the iCalendar specification, that stores event details — title, date, time, location, and description — in a way that virtually every calendar app can read and import. It's the same format generated when you export an event from Google Calendar, Outlook, or Apple Calendar.
Copy the generated content, save it into a plain text file with a `.ics` extension, and open that file on your device — most calendar apps will automatically offer to add it as a new event. You can also email the file as an attachment for recipients to add directly to their own calendar.
Yes — the iCalendar format (.ics) is a widely supported open standard, and all major calendar applications, including Google Calendar, Outlook, and Apple Calendar, can import .ics files without any compatibility issues.
This generator creates the event using 'floating' local time — meaning the date and time you enter will display exactly as entered, in whatever timezone the recipient's calendar app is set to. This avoids timezone conversion errors but means you should communicate the intended timezone separately if attendees are in different timezones.
Yes — both the Location and Description fields are optional. If you leave them blank, the generated file simply won't include those fields, keeping the invite to just the essential title, date, and time.
The generator expects the date in YYYY-MM-DD format and the time in 24-hour HH:MM format. If either doesn't match this format, the output will show an error message instead of a calendar file, so you can correct the input before trying again.
Enter the event's length in minutes using the Duration field, and the generator automatically calculates the end time by adding that duration to your start time. For example, a 2:00 PM start with a 90-minute duration produces an event ending at 3:30 PM.
Yes — enter the meeting link in the Location field (many calendar apps display the Location field prominently and make URLs clickable) or include it in the Description field for an online event, the same way you would for a physical address.
No — the calendar file is generated entirely in your browser based on the details you type. Nothing is sent to a server or stored anywhere.
An 'Add to Calendar' button typically generates and serves the same kind of .ics file dynamically when clicked, often from a backend system. This generator lets you create that same file manually and immediately, useful when you need a one-off calendar invite without building that backend integration.
Also known as