ICS Merger

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SysTools ICS Merger Software

Effortlessly combine multiple ICS calendar files into one consolidated calendar using our ICS Merger Tool. With its self-explanatory interface, you will merge multiple iCal calendars into one, without data loss. Moreover, it preserves all events, appointments, and reminders, throughout the task. Despite consolidation, the ICS merge tool allows users to split large ICS files into smaller parts.

(Average Rating 4.7 Based on 2895 Reviews)
  • Bulk Merge Option to Combine Numerous ICS Files Simultaneously
  • Supports Combining ICS Files from Different Calendar Platforms
  • Merge ICS Files Based on a Specific Date Range
  • Split Large ICS Files into Manageable Parts (from 1024 KB to 10 MB)
  • Real-Time ICS File Merging Monitoring with Built-in Dashboard
  • Easy-to-use Interface; No Need for Technical Expertise
  • Preserves Data Hierarchy During the ICS Merger Process
  • No File Size Limits Applied when Merging ICS Files
  • Supports ICS Files of Any Size & Format for Efficient Merging
  • No Third-Party Application Required to Merge ICS Files
  • Option to Preview ICS Calendar Data Before Merging
  • Provides A Detailed Merge Report & Logs Any Failures
  • ICS Merge Tool is Availalble for Windows & Mac OS System

Free Demo - SysTools ICS Merger Fully Tested & Secured to Use

Top Reasons to Choose ICS Merger!

Discover why ICS Merger is the right choice for you!

best tool

Cost-Effective

You can gain the numerous advanced features of this ICS Merger at a competitive price compared to other solutions. It comes with a one-time purchase, so you can combine numerous ICS files concurrently, without affecting your budget. Additionally, its high-quality functionality and affordability make it the go-to solution for both individuals and organizations. Before any commitment, you can try its free version to make an informed decision.

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24/7 Technical Support

We offer round-the-clock technical support to assist users with any query related to this or any other software. You can ask any question such as tool functionality, installation issues, and anything, you facing. Support is available via live chat, email, and phone, and we guarantee a quick resolution. This reliable support system helps users to resolve issues at anytime, from anywhere.

easy to use

No Technical Skills Required

We designed this solution with a user-friendly interface so that any skill-level user can use it efficiently. Without any technical knowledge, you can merge multiple ICS files simultaneously in a few clicks. Overall, this ICS merge tool is perfect for both beginners and experienced users.

Compatible with Multiple ICS-Supported Platforms

ICS
Google Calendar

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Microsoft Outlook

ICS
Apple iCloud Calendar

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Yahoo Calendar

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Thunderbird (Lightning Calendar)

ICS
Zoho Calendar

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Android Calendar (ICS file import/export)

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Windows Calendar

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Office 365 Calendar

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Lotus Notes Calendar (ICS export/import)

SysTools ICS Merge Tool - Video

Game-Changing Features of the ICS Merger

Effortlessly Combine ICS Files for Seamless Data Integration

Bulk ICS File Merging

Bulk ICS File Merging

The ICS file combine tool allows you to merge multiple ICS files simultaneously. This means you can upload multiple files at once, and the software will merge them in one go. This saves time, and effort for the users, who are handling large data sets. Alternatively, you can also add a single file, which makes this suitable for small to large data consolidation.

Preview ICS Files Before Merging

Preview ICS Files Before Merging

Before proceeding to the merging procedure, it is essential to ensure that the uploaded data is relevant. To address this, it provides a Preview option to see only the correct data added for the consolidation process.

Data Integrity

Preserves Calendar Data Integrity

Throughout the procedure preserving data hierarchy is the priority of all users. Therefore, we designed this tool to automatically maintain the integrity of your calendar events, appointments, tasks, and reminders. Additionally, the ICS merger tool ensures that no data is lost during the task.

Date & Time Preservation

Date & Time Preservation

The software preserves the date and time settings of each calendar event from all the ICS files you merge. This means the merging process keeps the original dates and times of all events.

No File Size Limitations

No File Size Limitations

It doesn't matter how much data or file size you handle; it allows you to upload any file size and merge them in bulk and simultaneously This means that you can upload 10KB or 10MB to combine ICS files with ease.

Multiple Merging Options

Multiple Merging Options

ICS file combine tool offers multiple options when merging your ICS files, including:

  • Merge ICS Files by Date Range: You can merge ICS files based on a specific date range. This is especially useful when you want to merge only relevant events. For instance, merging events only for the last month or year.
  • Split ICS Files: If your ICS files are larger than 10MB, it creates an issue in accessing or importing to platforms like Outlook Calendar. This solution gives an option to split the files, reducing their size to under 10MB to effortlessly import them to other platforms.

Supports Both iCal (ICS) Formats

Supports Both iCal (ICS) Formats

Whether your ICS files are from older iCal versions or newer updates, ICS Merger can handle both iCal (ICS) file formats with full compatibility. This means no matter the file version you have, it will merge them simultaneously, and hassle-free.

No Third-Party Application

No Third-Party Application Required

After installation of the ICS merge tool, you don’t require any other service, as it can handle the entire consolidation procedure independently. You just need to upload ICS files in it, and then select the destination to save the resultant data. That’s all!

ICS Merger Tool - Specifications

Try the Demo Version to Learn How to Merge large ICS Files

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(Windows OS)

Name: SysTools ICS Merger
Version: 3.0
Size: 75.8 MB
Release Date:  April, 2025
MD5: 21d4070095543963cc9df014585a763b
Delivery: Free via Email
Free Version: Download Now

(Mac OS)

SysTools Mac ICS Merger
3.0
25.5 MB
April, 2025
21d4070095543963cc9df014585a763b
Free via Email
Download Now

Trial Limitations:
(Windows)

Demo version will split 25 Items per Excel file.

Demo version will split 25 items per Excel sheet in case of Split by sheet option.
(Mac)

Demo version will Merge 25 Items per Excel sheet.

Demo version will split 25 items per Excel sheet in case of Split by sheet option.
(Windows) (Mac)
Hard Disk Space: 100 MB of free hard disk space required 100 MB of free hard disk space required
RAM: 4 GB of RAM (4 GB is recommended) 4 GB of RAM (4 GB is recommended)
Processor: Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz Mac Computer with Intel Processor
Mac Computer with Apple Silicon (Apple M1)

Platforms:
(Windows)

 Windows 11 (64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2019, 2016, 2012 R2, 2008 Compatible with Microsoft Outlook 2000, 2003, 2007, 2010, 2013, 2016, 2019, 2021 (32/64 bit)
(Mac)

MacOS X 10.8 (Mountain Lion), MacOS X 10.9(Mavericks), MacOS X 10.10 (Yosemite), MacOS X 10.11 (El Capitan), MacOS X 10.12 (Sierra), MacOS X 10.13 (High Sierra), MacOS X 10.14 (Mojave), MacOS X 10.15 (Catalina), MacOS X 11.0 (Big Sur), MacOS X 12.0 (Monterey), MacOS X 13.0 (Ventura), MacOS X 14.0 (Sonoma)

Application Pre-Requisites:

(Windows)

  • Microsoft .NET framework 4.5 or above should be installed.

(Mac)

User Control

ics merger

FAQs

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SysTools ICS Merge Tool

Compare Free & Full Version Before You Choose

Features Demo Version Full Version
Add Excel File or Folder in Software Interface
Feature to Split Huge Excel by Size
Option to Break Excel by Records (Row)
Option to Extract Sheets from Excel
Choose Desired Destination for Resulting File
Support All Versions of Windows or Mac OS
Mere ICS File 25 Items / Folder All Items
Cost FREE $39

Frequently Asked Questions

Common ICS Merger Questions and Their Solutions

How to merge multiple ICS files using ICS merge tool?

ics merger screen

To merge ICS files, simply follow these steps:

  1. Run ICS Merge Software on Your System.
  2. Add the ICS files you want to merge.
  3. Preview the files (optional) and select merge options i.e. Merge files within the Date Range or Split ICS After File Size.
  4. Choose the output location and click Merge.
  5. Now, wait till the procedure ends. When complete with the task, go to the destination location, and verify the resultant data.

Yes, ICS file combine tool allows you to combine ICS files from different platforms like Google Calendar, Microsoft Outlook, iCloud, and others into a single file.

Please note, that the tool does not directly access your calendar data from external services. You have to download the calendar files from any platform, save them locally, and upload them into the solution for merging.

Yes, the tool preserves all your calendar data, including events, appointments, reminders, and recurring events. You don’t need to worry about data integrity, as ICS Merge Tool maintains automatically.

Yes, it offers a feature that allows you to combine ICS files based on specific date ranges. Select the Start Date & End Date, the rest are automatically handled.
Yes, it fully supports recurring events and ensures that all the series of recurring events are merged accurately.
ICS Merge Tool provides robust security for your data as all the processing is offline. It does not store your data on the cloud; everything is processed offline, and the resultant data will be stored in your desired destination securely, without data loss.
Real User Experiences with SysTools ICS Merge Tool

Client Feedback on the Top-Rated ICS Merger Tool

4.7
2895 Ratings
5 Star
82%
4 Star
13%
3 Star
2%
2 Star
1%
1 Star
2%