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Free ICS Calendar Viewer
View Calendar Events

Drop a .ics file to view all calendar events and todos. Dates, locations, attendees, and recurrence rules displayed in a clean timeline. No upload — your data stays completely private.

Parse events & todosChronological displaySearch eventsNo upload requiredSupports Yahoo, Thunderbird, SeaMonkey, eM Client, Google Calendar, and more
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Drop your .ics files here

or click Add Files / Add Folder

Get Started with ICS Viewer in 3 Simple Steps

1

Drop file here

1. Upload ICS file

Drop a .ics calendar file to view events.

2

Processing... 0%

2. View in browser

Events are listed with dates and details.

3
Download

3. Browse events

Scroll through events. No upload to server.

About

What Is an ICS / iCalendar File?

ICS (iCalendar) is a standard format for representing calendar events and tasks, defined by RFC 5545. Files are usually named .ics or .ical and can contain one or many events. Each event is wrapped in BEGIN:VEVENT and END:VEVENT and contains properties like SUMMARY (title), DTSTART/DTEND (dates), LOCATION, DESCRIPTION, ORGANIZER, ATTENDEE, STATUS, and RRULE (recurrence).

Calendar apps like Google Calendar, Outlook, and Apple Calendar can export and import ICS files. Our free ICS Viewer parses these files and displays each event in a chronological card layout with date, title, location, attendees, and status — without uploading your data anywhere.

It also works with exports from Yahoo! Calendar, Mozilla Thunderbird, SeaMonkey, eM Client, and other iCalendar-compatible apps.

Use the viewer to preview a calendar export before importing it, to check a meeting invitation attachment, or to verify backups. Your calendar data stays private on your device at all times.

Features

Features of the ICS Viewer

View ICS calendar files with a clear event timeline

Event Parsing

Extract SUMMARY, DTSTART, DTEND, LOCATION, DESCRIPTION, ORGANIZER, ATTENDEE, STATUS, and RRULE from every VEVENT.

Todo Support

VTODO items are parsed too — see task summary, due date, status, priority, and description.

Chronological Sort

Events are automatically sorted by start date so you see your calendar in natural order.

Search & Filter

Instantly filter events by title to find specific meetings, appointments, or reminders.

No Upload

ICS files are processed entirely on your device. Nothing is sent to any server.

Private & Secure

Your calendar data never leaves your device. Ideal for personal or work schedules.

Broad Client Compatibility

Supports ICS files from Yahoo! Calendar, Mozilla Thunderbird, SeaMonkey, eM Client, Google Calendar, and many more.

How to use

How to View an ICS Calendar File Online

Four simple steps — no install, no sign-up

01
01

Open the ICS Viewer

Go to the ICS Calendar Viewer page and you'll see the upload area.

02
02

Drop Your .ics File

Drag and drop a .ics (or .ical) file, or click to browse and select one.

03
03

View Summary Stats

The tool parses all VEVENT and VTODO blocks and shows event count, todo count, and date range.

04
04

Browse Events & Todos

Each event appears as a card with date, title, location, attendees, and status. Todos are listed separately.

Use cases

Use Cases for the ICS Viewer

When and why to open ICS files online

Calendar Export Preview

Preview events exported from Google Calendar, Outlook, or Apple Calendar before importing elsewhere.

Meeting Invitation Review

Open ICS meeting invitations attached to emails to see event details without importing them.

Privacy-Conscious Viewing

View calendar events on a shared or public machine without adding them to the local calendar app.

Backup Verification

Confirm that a calendar backup contains the expected events, dates, and recurrence rules.

Schedule Auditing

Review a busy schedule — search for specific events, check for duplicates, or verify time slots.

Development & QA

Inspect ICS output from apps or scripts during development and testing of calendar integrations.

Compare Plans

Free vs Paid — ICS Viewer

Get started free, upgrade when you need more power.

Feature
Free
Paid
Daily usage
5 uses/day
Unlimited
File size limit
50 MB
200 MB (1 GB for All Tools)
All core features
No software installation
Works on any device
Files stay on your device
Batch processing
Priority support
Upgrade — starting at $6.99/mo
Upgrade to Full Version

Unlock the Full Power of ICS Viewer

Remove daily limits, process larger files up to 1 GB, enable batch processing, and get priority support.

Buy Full Version — $6.99/moor $300/yr enterprise

File Viewers includes:

  • 21 file viewers included
  • Unlimited daily uses
  • 200 MB file size limit
  • All file formats supported
  • Email analysis tools

Also available in the All Tools Bundle

FAQ

Frequently Asked Questions

Common questions about the ICS Calendar Viewer

Q1. What is an ICS file?
ICS (iCalendar) is a standard format (RFC 5545) for storing calendar events and todos. Files are saved with a .ics or .ical extension. They can hold events (VEVENT), todos (VTODO), and other components, with properties like SUMMARY, DTSTART, DTEND, LOCATION, DESCRIPTION, ORGANIZER, ATTENDEE, RRULE, and STATUS.
Q2. Do you upload my ICS file?
No. The ICS Calendar Viewer processes your file entirely on your device. Your calendar data is never sent to our servers.
Q3. Can it show recurring events?
The viewer displays the RRULE (recurrence rule) if present, such as FREQ=WEEKLY or FREQ=MONTHLY. It shows the rule as defined in the file but does not expand recurrences into individual occurrences.
Q4. Does it support VTODO items?
Yes. If the ICS file contains VTODO blocks, the viewer parses them and displays summary, due date, status, priority, and description in a separate Todos section.
Q5. What date formats are supported?
The viewer parses both date-time values (e.g. 20240115T100000Z) and date-only values (e.g. 20240115). Times in UTC (Z suffix) are converted to your local timezone for display.
Q6. Can I search or filter events?
Yes. A search box lets you filter events by title (SUMMARY). This is helpful for large calendars with many events.
Q7. Is the ICS Viewer free?
Yes. The tool is free to start with no sign-up. Free usage includes daily limits based on your plan, and paid plans provide higher or unlimited usage.
Q8. What if my ICS is from Google or Outlook?
Exports from Google Calendar, Microsoft Outlook, and Apple Calendar use standard iCalendar format. The viewer parses common properties (SUMMARY, DTSTART, DTEND, LOCATION, DESCRIPTION, ORGANIZER, ATTENDEE, STATUS, RRULE) and should work with most exports.
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