1 KB ICS sample file

An ICS file of exactly 1,024 bytes. It is a valid iCalendar file file, generated for this site and checked with an independent parser.

sample-ics-1kb.ics

1 KB1,024 bytes

Download 1 KB ICS

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Type: text/calendar
SHA-256: 5cd8dc2526095ea50f3154bd94f9f8837682140b670ffb09e6a1ce3cf533b26a
Direct URL: https://sampletestfiles.com/downloads/ics/sample-ics-1kb.ics

What is in this file

A VCALENDAR object with 2 VEVENT components, each with a unique UID, start and end times, a summary, a description and a location. Non-standard X- property lines, which calendar software ignores, bring the file to the exact size.

Events	2
iCalendar version	2.0
Time zone	UTC
Line endings	CRLF, folded at 75 octets
Encoding	UTF-8 (ASCII characters only)

How the file begins

The opening lines of sample-ics-1kb.ics, exactly as they appear in the file.

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//SampleTestFiles//Sample Calendar//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:a6cf3b6b-cd57-4173-a942-a2339c75f449@example.com
DTSTAMP:20260101T000000Z
DTSTART:20260105T090000Z
DTEND:20260105T100000Z
SUMMARY:Review meeting 1 with Ethan Zeller
DESCRIPTION:This sample file exists so that software can be tested with rea
 listic input.
LOCATION:Pune\, IN

Preview

Shows the file contents.

Where 1 KB matters

The smallest practical test file: 1,024 bytes, small enough to travel in a single network packet. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Ethernet	1,500 bytes (typical MTU)	A 1 KB payload fits in one packet with its headers.
Browser cookies	4,096 bytes per cookie	1 KB is well inside the limit; the 5 KB sample is over it.

All 1 KB sample files

Use this file for

Smoke tests in CI that must run in milliseconds
Testing calendar import and subscription
Checking time-zone handling

Testing notes for ICS

Time zones and recurrence rules are where calendar software fails. The samples use UTC and non-recurring events, so they work as a known-good baseline.
Importing the same UID twice should update an event, not duplicate it.

ICS format reference

Technical details

File name	sample-ics-1kb.ics
Format	ICS (iCalendar file)
Extension	.ics
MIME type	text/calendar
Size	1,024 bytes (1 KB)
Kind	Text
SHA-256	5cd8dc2526095ea50f3154bd94f9f8837682140b670ffb09e6a1ce3cf533b26a
Created	2026-10-10
Validation	Exact size, signature bytes and structure checked when the file was generated
Preview	Available on this page
Source	Generated for this site; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Email & Calendar

Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Download from the command line and verify

Fetch the file with curl, then compare its checksum with the SHA-256 value above.

curl -o sample-ics-1kb.ics 'https://sampletestfiles.com/downloads/ics/sample-ics-1kb.ics'
sha256sum sample-ics-1kb.ics     # Linux
shasum -a 256 sample-ics-1kb.ics # macOS

On Windows, run Get-FileHash sample-ics-1kb.ics -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.

Related files

Questions about this file

Is this file exactly 1 KB?: Yes. It is 1,024 bytes, which is 1 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 1 KB ICS file?: A VCALENDAR object with 2 VEVENT components, each with a unique UID, start and end times, a summary, a description and a location. Non-standard X- property lines, which calendar software ignores, bring the file to the exact size.
Do the events repeat?: No. Each event is a single one-hour meeting in UTC with its own UID.

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