6 free tools
Date & Time
Age, diff, countdown, timezones. Each listed tool has free public access, with processing and account requirements labeled where applicable.
- Free public access
- Account rules labeled
- Processing clearly labeled
- Instant results
Age Calculator
Find your exact age in years, months, and days from a birth date, with a birthday countdown, life-in-numbers totals, generation, and zodiac sign.
Date Difference Calculator
Count the days, weeks, and hours between any two dates instantly — for deadlines, notice periods, trips, tenures, and interest-day math.
Countdown Timer
A live countdown to any date and time — days, hours, minutes, and seconds ticking every second, readable from across a room.
Timezone Converter
See one moment rendered in two time zones side by side — DST-aware via the IANA database, across nine major zones including UTC and IST.
Business Days Calculator
Count the Monday-to-Friday working days between two dates, weekends skipped automatically — for SLAs, deliveries, and notice periods.
Work Hours & Time Card Calculator
Calculate daily and weekly work hours from clock-in and clock-out times, including breaks, overnight shifts, decimal totals and optional overtime.
Why use these date & time tools
Skip the calendar math
The Age Calculator and Date Difference Calculator count exact years, months and days between dates so you don't miscount by hand.
Work across time zones
The Timezone Converter shows the same moment in several cities, which makes scheduling calls and launches far easier.
Plan real workdays
The Business Days Calculator skips weekends so deadlines and delivery estimates reflect actual working days.
What you can do with Date & Time
Find an exact age in years, months and days with the Age Calculator.
Count the days between two dates for a project timeline using the Date Difference Calculator.
Convert a meeting time across cities with the Timezone Converter before you send an invite.
Calculate a deadline that skips weekends using the Business Days Calculator.
How to choose the right tool
Measuring a span of time?
Use the Age Calculator for a birth date and the Date Difference Calculator for any two dates.
Coordinating across regions?
The Timezone Converter aligns a single moment across multiple time zones.
Counting toward a deadline?
The Business Days Calculator counts working days and the Countdown Timer tracks the time left to an event.
About Date & Time
Effortlessly manage time-based calculations with our versatile date and time tools. Whether you need to calculate your exact age, find the difference between two dates, convert timestamps across global time zones, or generate countdowns for upcoming events, this collection provides instant answers. Perfect for project managers, event planners, and developers dealing with complex time data, these utilities operate entirely in your browser. Stop struggling with manual calendar math and get precise, instant time calculations without any data collection.
Date and time tools run in your browser. They only use the dates you type in — no calendar access, no location, and nothing uploaded.
Frequently asked questions
Do these tools read my calendar or location?
Do they handle leap years and daylight saving?
Can I count only working days?
Are they free to use?
Related Reading
From the blog
Working Across Time Zones: How to Schedule Without Missing Meetings
Remote work made time zones everyone's problem. Here's how UTC, offsets and daylight saving actually work — and a simple system for scheduling across the world without missed meetings.
From the blog
Cron Expressions Explained: How to Read and Write Cron Schedules
Learn how the five cron fields work, how to read any cron expression, and how to write schedules that fire when you expect — plus classic mistakes to avoid.