calendr.events

Convert / calendar toolbox

JSON → ICS

Import a documented event-array schema or lossless jCal document.

Processed in your browser

Opening your local workspace…

How it works.

  1. 01Paste or choose JSON.
  2. 02Use an event array with title/startDate/startTime/endDate/endTime/allDay, or a jCal calendar.
  3. 03Review schema errors and diagnostics, then export.

The important details.

Event arrays create new events; jCal retains the full property/component tree. Arbitrary JSON objects are rejected rather than guessed.

A good question.

Which JSON format round-trips best?

The lossless jCal mode produced by ICS → JSON preserves components and custom properties.

Keep going.

All tools →

Convert

ICS → JSON

Export readable event rows or the complete lossless jCal tree.

Create

Create a Calendar

Add one event or a whole schedule, then download one calendar file.

Fix

ICS Validator

Check the whole file without making any changes.

Your file stays in this browser tab. No account, no calendar upload, no calendar-content storage. Read our privacy approach.