Date & Productivity Tools

Calendar Generator

Generate printable month or year calendars with custom dates and downloadable HTML / calendar events.

Your content stays on your device Free, with no account
Calendar Generator · local processingNo uploads

Inputs & controls

Enter values or load the example.

Supported behavior & limits

All inputs stay in this page. No uploads or application history. Input edits invalidate generated outputs. Numeric quick sliders never clamp wider exact fields. Month or year calendar, years 1–9999. Monday or Sunday first; ISO row weeks require Monday. Up to 500 supplied custom date lines with titles up to 160 characters. No inferred national holidays. HTML is a self-contained printable file; each month starts on a new printed page; long content may require additional pages. ICS contains only your custom dates in the selected month/year. An event on 9999-12-31 cannot have a supported next-day exclusive ICS end. Calculation worker deadline: 10 seconds.

YOUR RESULT

Review the result

Generate a result to see details and reports.

    Actual report preview
    A FEW SIMPLE STEPS

    How to use Calendar Generator

    1. Enter inputs or load the example. Review the selected weekend, time-zone, calendar or numbering convention.
    2. Calculate or generate locally. World Clock refreshes its selected zones once applied.
    3. Inspect actual results, supporting tables, custom calendar preview and stated assumptions. Edits invalidate previous outputs.
    4. Copy a report or download TXT/JSON; Meeting and custom Calendar dates can export ICS, and Calendar can print or download HTML.
    PRIVATE BY DESIGN

    Why use this tool?

    Your dates, clock settings and calendar labels stay on your device. Self-hosted browser code processes the inputs without uploads, accounts or application history. Browser time-zone rules and your device clock are used without remote lookup.

    Tool inputs stay in your browser. Only your theme preference is saved on this device.

    A few things worth knowing

    What behavior and limits are supported?

    Month or year calendar, years 1–9999. Monday or Sunday first; ISO row weeks require Monday. Up to 500 supplied custom date lines with titles up to 160 characters. No inferred national holidays. HTML is a self-contained printable file; each month starts on a new printed page; long content may require additional pages. ICS contains only your custom dates in the selected month/year. An event on 9999-12-31 cannot have a supported next-day exclusive ICS end.

    Will this run after I close the page?

    No. Timers/clocks run only in the active browser page or workspace panel. Closing, Reset or switching tools releases that session. Background throttling and device sleep can delay feedback, and device-clock adjustments affect wall-clock timers. No notification permission, service worker or server alarm is used.

    Are holidays or time-zone rules fetched from a server?

    No. Weekend/holiday rules are supplied by you; no regional legal calendar is inferred. Time-zone calculations use the browser’s installed rules. The Meeting planner rejects skipped local times and requires an explicit occurrence for repeated times.

    Are my inputs stored?

    No application input history is stored. Reports/downloads and explicit clipboard copies exist outside the tool when you request them. Clear, Reset, workflow switching and page exit release current application data; this is not a physical memory-erasure guarantee.