What is an .ics file and why would I make one?

An .ics file is plain text in the iCalendar (RFC 5545) format that holds one or more calendar events. Double-clicking it, or attaching it to an email, lets anyone add the event to their own calendar in two taps instead of retyping the date, time and place. A concert promoter, a webinar host or a wedding planner ships one .ics so 200 people all get the same correct entry. The file you build here starts with BEGIN:VCALENDAR and holds a single VEVENT block.

How do I import the file into Google Calendar or Apple Calendar?

Download the .ics, then in Google Calendar open Settings, choose Import and export, pick the file and the calendar to add it to. On a Mac or iPhone just double-tap or open the file and Apple Calendar offers to add the event. Outlook reads it the same way through File then Open and Export then Import. Because the file is standard iCalendar, the same download works across all three without any change.

How do I set an all-day event with no specific time?

Turn on the all-day switch. The tool then writes the date as DTSTART;VALUE=DATE:20261225 with no hours or minutes, which is how the spec marks a date-only event. It also sets DTEND to the day after the start, because iCalendar treats the end date as exclusive, so a single all-day event on December 25 ends on December 26. A birthday, a public holiday or a deadline reads cleanly this way in every calendar app.

What does the repeat rule (RRULE) do?

The repeat dropdown writes an RRULE line such as RRULE:FREQ=WEEKLY, which tells the calendar to recreate the event on that cadence forever. Daily, weekly, monthly and yearly cover a standup, a payday, a rent reminder or an anniversary. The calendar app expands the rule on its own, so one small event entry becomes a whole recurring series without you listing every date by hand.

How does the reminder (VALARM) work?

Choose a number of minutes before the start and the tool adds a VALARM block with TRIGGER:-PT15M for fifteen minutes, or -PT1440M for a full day ahead. When the calendar app reaches that point it fires a notification using your title as the alert text. This is the same alarm mechanism your phone uses, so a meeting set to remind you 10 minutes early pings you exactly on time after import.

Are my event details uploaded anywhere?

No. The whole file is assembled by JavaScript inside your browser tab, so the title, guests, location and notes never reach a server and nothing is logged. The one thing to watch is the shareable URL, which encodes the fields in the query string for the share-by-link feature, so a link pasted into chat does record those details in the recipient server log. For a sensitive event, use the download or copy button and send the file directly instead.

Send one calendar invite to a whole mailing list

You are announcing a product webinar to 500 subscribers. Instead of telling everyone to add it themselves, build the event once here with the title, the Zoom link in the URL field and a 10-minute reminder, download the .ics and attach it to the campaign email. Each reader opens the file and the webinar lands in their calendar with the right time and a working alert, no copy-paste of dates on their end.

Ship a recurring standup or payday to the team

A daily standup at 9:00 should not be 200 separate entries. Set the start, pick the daily repeat rule and a 5-minute reminder, and the single .ics expands into a forever series once imported. Swap to the monthly rule and you have built the payday or rent-due reminder the same way, with one file the whole team can import.

Block an all-day deadline or travel day

A project is due December 25 and you want it to sit across the whole day, not at a stray hour. Flip the all-day switch, set the date, and the tool writes a clean date-only event that reads as a full-day band in every calendar. Extend the end date and the same setup blocks a multi-day trip or conference.

Attach an event to a landing page or confirmation screen

After someone books a slot or buys a ticket, hand them an .ics so the appointment is saved before they close the tab. Fill the form with their slot time and venue, copy the text into your confirmation flow, and the "add to calendar" step becomes one tap instead of a manual entry they might forget.

ICS Event Generator — Create a Calendar Event File

Fill a form, get a valid .ics calendar event with reminder and repeat rule, ready to import into Google, Apple or Outlook

Runs locally
Category Generator
Best for Checking file type, size, metadata, and obvious mismatch signals before sharing.

Event title

All-day eventTimes are UTC

StartEnd

LocationURL

Description

Reminder (minutes before)Repeat

Generated .ics

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Toolora//ICS Event Generator//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mprf7yb9-pt8q97rg@toolora
DTSTAMP:20260529T211520Z
DTSTART:20260530T100000
DTEND:20260530T110000
SUMMARY:Team standup
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Team standup
TRIGGER:-PT15M
END:VALARM
END:VEVENT
END:VCALENDAR

What this tool does

Free .ics calendar event generator that turns a simple form into a standards-compliant iCalendar file you can import into Google Calendar, Apple Calendar, Outlook or any app that reads RFC 5545. Type a title, pick a start and end time, flip the all-day switch for a date-only event, then add a location, a description, a link, a reminder a set number of minutes before, and a repeat rule (daily, weekly, monthly or yearly). The tool formats every timestamp the way the spec wants, escapes commas, semicolons and line breaks in your text, stamps a unique UID and a DTSTAMP, and wraps a VALARM around your reminder. Copy the raw text or download the .ics file with one click, then share it or attach it to an email so recipients add the event without retyping a thing. Everything runs in the browser tab, nothing is uploaded.

Tool details

Input: Text + Numbers; The page exposes text boxes, numeric controls, file pickers, or structured inputs depending on the tool.
Output: Live result + Copy + Download; The result area focuses on usable output, with copy, download, or preview actions when supported.
Privacy: Browser-side processing; The main tool logic does not call an external API, so inputs normally stay in the current tab.
Save / share: Shareable URL state; Key settings are encoded in the URL so another person can reopen the same setup.
Performance budget: Initial JS <= 9 KB; No WASM budget is declared, keeping the tool quick to open on mobile.
Best fit: Generator · Operations; Category and role tags drive related tools, internal links, and quick fit checks.

How to use

1. Input

Paste or drop your content into the tool panel.
2. Process

Click the button. All processing is local in your browser.
3. Copy / Download

Copy the result or download to disk in one click.

How ICS Event Generator fits into your work

Use it before upload, handoff, archive, support review, or any moment where a file needs one local check before it leaves your machine.

File jobs

Checking file type, size, metadata, and obvious mismatch signals before sharing.
Preparing mixed folders for upload, archive, intake, or review.
Keeping sensitive files in the browser instead of sending them to an account-based service.

File checks

Do not treat the extension alone as proof of the real file type.
Review metadata before a file goes to customers, vendors, or a public page.
Keep the original file until the copied, converted, or exported result is verified.

Good next steps

These links move the current task into a more complete workflow.

Real-world use cases

Send one calendar invite to a whole mailing list
You are announcing a product webinar to 500 subscribers. Instead of telling everyone to add it themselves, build the event once here with the title, the Zoom link in the URL field and a 10-minute reminder, download the .ics and attach it to the campaign email. Each reader opens the file and the webinar lands in their calendar with the right time and a working alert, no copy-paste of dates on their end.
Ship a recurring standup or payday to the team
A daily standup at 9:00 should not be 200 separate entries. Set the start, pick the daily repeat rule and a 5-minute reminder, and the single .ics expands into a forever series once imported. Swap to the monthly rule and you have built the payday or rent-due reminder the same way, with one file the whole team can import.
Block an all-day deadline or travel day
A project is due December 25 and you want it to sit across the whole day, not at a stray hour. Flip the all-day switch, set the date, and the tool writes a clean date-only event that reads as a full-day band in every calendar. Extend the end date and the same setup blocks a multi-day trip or conference.
Attach an event to a landing page or confirmation screen
After someone books a slot or buys a ticket, hand them an .ics so the appointment is saved before they close the tab. Fill the form with their slot time and venue, copy the text into your confirmation flow, and the "add to calendar" step becomes one tap instead of a manual entry they might forget.

Common pitfalls

Mixing up the all-day and timed modes. A timed event needs a real start and end, while an all-day event uses date-only fields. Leaving the all-day switch on but expecting an exact 2pm slot writes a date band instead, so check the toggle matches what you mean before you download.
Forgetting that the all-day end date is exclusive. iCalendar treats DTEND as the morning the event is already over, so a single all-day event on July 1 must end on July 2. The tool fills this in automatically, but if you type the end by hand, do not set it to the same day as the start or the event collapses to nothing.
Trusting the time zone without checking. A floating time has no zone and shows as whatever local clock the importer is on, which is fine for a personal note but wrong for a cross-country call. Turn on the UTC switch, or state the zone in the description, when attendees are in different regions.

Privacy

The entire .ics file — the title, the guest-facing notes, the location, the reminder and the repeat rule — is assembled by plain JavaScript in your browser tab. Nothing is sent to a server and nothing about your event is logged. The single caveat: the shareable URL encodes the form fields in the query string so a "share link" reproduces your draft, which means a link pasted into a chat will record those details in the recipient server access log. For a confidential event, use the download or copy button and send the file directly rather than the URL.

FAQ

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ICS Event Generator — Create a Calendar Event File

What this tool does

Tool details

How to use

1. Input

2. Process

3. Copy / Download

How ICS Event Generator fits into your work

File jobs

File checks

Good next steps

Real-world use cases

Send one calendar invite to a whole mailing list

Ship a recurring standup or payday to the team

Block an all-day deadline or travel day

Attach an event to a landing page or confirmation screen

Common pitfalls

Privacy

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