Free Date and Time Tools
Free date and time tools to convert Unix timestamps, calculate the difference between dates, count down to a deadline, switch time zones, and convert military time.
Choose a tool and get an instant result
BlinkCalc tools are designed to be fast, practical, privacy-conscious, and easy to understand. Every result is calculated in your browser.
Age Calculator
Find your exact age in years, months, and days from any date of birth.
Age Difference Calculator
Calculate the age difference between two people or any two dates.
Birthday Calculator
Find your exact age, day you were born, days until next birthday, and zodiac sign.
Countdown Timer & Stopwatch
Set any countdown with an audio alert. Includes a stopwatch with lap support.
Date Difference Calculator
Find the exact days, weeks, months, and years between any two dates.
Due Date Countdown
Count down the days, hours, and minutes to any upcoming due date or event.
Military Time Converter
Convert between 24-hour military time and standard 12-hour AM/PM time.
Minutes to Hours
Convert any number of minutes to hours and minutes instantly.
Time Calculator
Calculate the difference between two times in hours and minutes.
Time to Decimal
Convert hours and minutes to a decimal number for payroll and billing.
Timestamp Converter
Convert Unix timestamps to readable dates and back.
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Frequently asked questions
What time zone do these tools use?
All conversions use your browser's local time zone by default. The time zone converter lets you switch to any IANA zone.
Can I convert Unix timestamps in seconds and milliseconds?
Yes. The timestamp converter auto-detects seconds vs milliseconds vs microseconds and shows ISO 8601, UTC, and local formats.
Do these tools account for daylight saving time?
Yes. Both the time zone converter and the date difference tools rely on the IANA tz database via the browser, so they respect DST automatically.