Free calendar tools

Small, fast utilities for anyone who works with dates, schedules, and calendar files. Everything runs in your browser: no signup, no upload, no catch.

Add to calendar link generatorEmbeddable

Turn any event into Google / Apple / Outlook / Yahoo links, or an embeddable button for your site.

Countdown timerEmbeddable

A live countdown to any moment. Share it or embed it on your own site.

Time zone meeting planner

Line up five time zones and spot the overlap that is not 6am for anyone.

Lint an ICS file for the problems that make Apple and Google reject it.

Date duration calculator

Days, weeks, months, and working days between any two dates.

Week number lookup

Today's ISO week, any date's week, and the whole year at a glance.

Recurrence rule (RRULE) builder

Compose RRULE strings without reading RFC 5545, with live next-dates preview.

School year calendar generator

Term dates and breaks in, a real calendar file out. Import it anywhere.

Open any ICS or webcal feed and read what is inside before subscribing.