Free tool
ICS validator
Paste ICS text and get a structural report: missing UIDs, bad line endings, absent VERSION, unclosed events. The checks that actually break calendar feeds.
More free calendar tools
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.
TangoHive itself is a shared calendar for families, teams, and groups: paste any schedule, get a calendar everyone can subscribe to. Try it free · All 9 tools