Free date & time calculators

This set of free date and time tools covers everything from working out your exact age to counting down to an event, converting time zones, and counting working days. Each one runs instantly in your browser and handles leap years and daylight saving correctly.

Plan dates and durations

Use the date calculator for deadlines and durations, the age calculator for birthdays and milestones, the time zone converter for international scheduling, and the business days calculator for delivery and notice periods.