iCal Converter is a set of free online iCalendar/ICS tools built by Duegency, a web development agency in Madrid. It is designed for calendar file conversion, repair, merging, splitting, validation, and deduplication. The site repeatedly emphasizes that all processing happens in the browser with no uploads required, which is important for files containing personal or business schedule information.
The feature set is fairly comprehensive: it can convert ICS to CSV, Excel/UTF-8 spreadsheets, or JSON, and can also convert data exported from CSV/Excel into ICS for use with Google Calendar, Outlook, and Apple Calendar. For developers, ICS to JSON provides structured output and ISO 8601 dates, making it suitable for web apps and REST API-related data processing, although the text does not state that an official API is available.
On compatibility, the tools focus on real-world issues: preserving duplicate events and time zones, fixing timezone mismatches, encoding problems, incompatible properties, invalid characters, line folding, and performing RFC 5545 validation. They also support merging multiple ICS files, splitting large ICS files by CATEGORIES, detecting duplicate events by UID/title/date/location, and fixing import/export issues for Outlook, Microsoft 365, Google Calendar, and Apple Calendar.
The pages clearly label the tools as free, instant, and browser-based. I did not see any information about accounts, paid plans, usage limits, or payment methods. For one-off conversions, office collaboration, and lightweight development/debugging, the barrier to entry is very low. However, because processing depends on the browser, performance with very large files, browser compatibility, and batch automation capabilities are not disclosed.
The main strengths are that the tools are focused, privacy-friendly, cover common pain points in ICS file handling, and are compatible with mainstream calendar and spreadsheet ecosystems. The downsides are that there is no indication of whether it is open source, no self-hosting option is provided, and I did not see an SDK, command-line tool, official API, or detailed support channels. The documentation feels more like a feature index, with limited edge cases or examples.
It is suitable for users and developers who need to temporarily fix calendar import errors, convert schedules into spreadsheets for analysis, generate ICS from CSV, or debug calendar data for applications. If you need enterprise-grade batch processing, auditable deployment, or automated pipelines, you may need to look for open-source libraries, scripting tools, or native platform APIs.
The crawled text does not include information about network reachability, ICP filing, CDN usage, or payments, so its accessibility from China is unknown. Since the tool is free and runs in the browser, payment is not a major barrier. Alternatives include built-in import/export features from calendar platforms, spreadsheet software with scripts, or local iCalendar parsing libraries.
β This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on icalconverter.com official site.
icalconverter.com is an Unknown Dev Tools provider. TG4G tracks its product information, an overall rating of 7.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach icalconverter.com directly.