Skip to main content
JSON to iCalendar

Online JSON to iCalendar Converter

Convert JSON to ICS/iCalendar online in your browser. Accurate JSON to ICS/iCalendar conversion for reports, imports, and workflows on ConversionTab.

Use this focused converter when you need a direct JSON to iCalendar export without moving data through a server.

Conversion focus

Private by design: JSON content is processed locally in the browser.

Map each ICS field to a normalized table column. Use Include to choose output lines; Check all / Uncheck all sit under the mapping table.

# ICS Field Mapping Include
Provide input above to load mapping options.
Include column:

What this conversion is for

Shape JSON rows into VEVENT blocks with DTSTART, DTEND, SUMMARY, LOCATION, and UID so calendar apps can import real meetings and reminders.

  • Each JSON row typically maps to one VEVENT—SUMMARY and DTSTART are the usual required pair.
  • Time zones: map an IANA TZID for wall times, or use explicit offsets / Z; all-day dates use VALUE=DATE.
  • Provide a UID for stable re-imports; auto UIDs follow content and may duplicate if fields change.

Calendar events: DTSTART, SUMMARY, LOCATION

  • DTSTART/DTEND accept all-day dates (VALUE=DATE), wall times with a mapped IANA TZID, or explicit UTC/offset stamps.
  • SUMMARY is the headline attendees see; LOCATION and DESCRIPTION add venue and agenda text.
  • Provide a UID column for stable re-imports; without one we derive a content-based UID that is not a duplicate-free update promise.
  • Map RRULE as raw FREQ=…;COUNT=… text—semicolons are not escaped. Validate the .ics in a test calendar before bulk send.

Use this output next

ICS → JSON

Automation and APIs.

ICS → PDF

Printable calendars.

ICS → XLSX

Timeline review in Excel.

ICS → CSV

Edit events in a spreadsheet.

Suggested workflow

Paste JSON in the Text tab or upload a file; use Format when it helps.

Confirm the document parses—objects, arrays, and string quoting must be valid JSON.

Map columns to SUMMARY, DTSTART, and DTEND (optional TZID, LOCATION, RRULE, UID). Invalid or end-before-start dates are rejected—required calendar fields must be non-empty.

Download .ics for calendar apps; verify time zones before bulk send.

Before you convert

  • JSON must be valid: duplicate keys, trailing commas, or BOMs break parsers.
  • Provide a UID column for stable re-imports; auto-generated UIDs follow row content and are not a duplicate-free update guarantee.
  • Keep a copy of the original JSON as the audit trail after you ship iCalendar.

Choose the right output

When to use iCalendar

  • Calendar clients expect .ics with VEVENT blocks—not JSON in email.
  • Marketing or ops JSON feeds must become meeting invites or room holds.
  • You need SUMMARY, DTSTART, and LOCATION surfaced for attendee mailboxes.
  • Static schedules are being distributed outside your web app.

When not to use iCalendar

  • Editable schedules belong in XLSX/CSV before you freeze calendar files.
  • API-driven scheduling should use JSON feeds, not static ICS alone.
  • Printable rooming charts may be better as PDF than calendar invites.
  • Complex recurrence editing is safer in a calendar UI than CSV round-trips.

Why use ConversionTab?

  • Runs in your browser — privacy-first; sensitive JSON stays on your device until you copy or download.
  • No uploads required — paste or pick a local file; nothing is sent to a conversion backend for the transform itself.
  • Map, preview, download — choose fields in the mapping table, review the result, then copy or save the file.
  • Built for everyone — clear steps for non-technical reviewers and power options for engineers.

Continue with other formats

JSON → CSV

Flat pipelines and spreadsheet handoffs instead of ICS.

JSON → VCF

Contact bundles for phones and mail instead of ICS.

JSON → YAML

Repo-native config and CI matrices instead of ICS.

JSON → XLSX

Typed spreadsheet review instead of ICS.

JSON → SQL

Executable load scripts instead of ICS.

Reviewed JSON → iCalendar notes

Long-form FAQs live below—expand a section when you need edge cases or field rules.

  • Step 1: Input JSON Data: Begin by providing your JSON data into the designated area. You can either input JSON data directly as text or upload a JSON file.
  • Step 2: Map JSON Properties: Proceed to the 'Output Options' section to map JSON properties to ICS fields. Ensure accurate mapping for proper representation of event details.
  • Step 3: Configure Recurring Events: If your JSON data includes recurring events, configure recurrence settings such as interval-based recurrence or custom recurrence rules using the iCalendar RRULE syntax.
  • Step 4: Initiate Conversion: Click the 'Convert' button to begin the conversion process.
  • Step 5: Review Output: Once the conversion is complete, review the resulting ICS data. You can either copy the data or download the ICS file for further usage.
  • Step 6: Explore Additional Features: Utilize any additional features provided by the tool, such as accessing example JSON data for demonstration purposes and resetting input/output data as required.

The JSON to iCalendar Converter helps you transform JSON into iCalendar effortlessly, designed for calendar events.

Perfect for event sharing, this tool ensures secure, fast, and precise results for cross-platform scheduling.

You can either paste your JSON data directly into the input field or upload a file. Select iCalendar as the desired output format, and the converted file will be ready in moments.

Your converted iCalendar file is ready to download. Simply save it to your device.

JSON is parsed as structured input for this page. Use complete rows, valid syntax, and consistent field names so the converter can preserve the important data when creating iCalendar.

iCalendar is generated from the parsed JSON data. Review DTSTART/DTEND, TZID, and RRULE before importing into a calendar app.

Help

Questions before converting

One question per row — expand only what you need.

The JSON to ICS conversion feature on ConversionTab allows users to convert JSON data into ICS (iCalendar) format, commonly used for event scheduling and calendaring purposes.

ConversionTab provides users with two input options for JSON data:

  • Text Tab: Users can manually input JSON data as a valid string in this tab.
  • File Tab: Users can upload their JSON file through the 'Drop/Browse File' feature, simplifying the process for working with existing data.

Upon entering JSON data, users proceed to the 'Output Options' section, where they can customize various parameters before generating the ICS file.

Customizing event details involves mapping JSON properties to corresponding ICS fields. Key considerations include:

  • Title: Assign the JSON property containing event titles to the appropriate ICS field.
  • Date and Time: Map properties representing event start and end dates and times to corresponding ICS fields.
  • Description: Assign JSON properties containing event descriptions to the ICS description field.
  • Location: Map the JSON location data to the ICS location field for precise event venue information.

These mappings ensure accurate representation of event information in the resulting ICS file.

The 'Include' option allows users to specify which event details should be included or excluded in the resulting ICS file. By toggling checkboxes, users can control the content of the generated ICS file based on their preferences.

ConversionTab handles recurring events seamlessly by default. Users do not need to adjust settings for recurring events; the standard format is automatically selected, ensuring accurate representation in the ICS format.

Once customization is complete, users can initiate the conversion process by clicking the 'Convert' button. The resulting ICS data is displayed in a textarea, providing options to:

  • Copy: Users can copy the generated ICS data for immediate use.
  • Download: Users can download the ICS file, with the option to specify a custom filename if desired.

This flexibility ensures convenient access to converted data in the preferred format.

To aid user understanding and facilitate reset functionality, ConversionTab offers:

  • Example JSON: Users can access a sample JSON by clicking the 'Example' button, populating the text area with sample data for easier comprehension of the conversion process.
  • Reset Functionality: The 'Clear' button allows users to clear input and output data, providing a clean slate for new conversions or adjustments.

Explore more conversions

Same goal, other inputs

XLSX → ICS

XLSX schedules packed as ICS for mailbox import.

XML → ICS

XML schedules packed as ICS for mailbox import.

CSV & workbook bridges

XLSX → CSV

Workbook to pipeline text.

CSV → ICS

Spreadsheet-first path to the same shape.

XML → CSV

Tree to grid for review.

Exports & delivery

JSON → PDF

Printable pack from the same source.

JSON → HTML

Web table fragment.