Time Calculator
Find out exactly how long until a specific time. Select your target time and see a live countdown with hours, minutes, and seconds.
How Long Until...
24-Hour Format
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Military Time
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Day Progress
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Hours Since Midnight
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Minutes Since Midnight
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Seconds Since Midnight
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Popular Time Countdowns
Wondering how long until lunch, end of the work day, or a specific appointment? These are the most commonly searched countdown times. Each page shows a live countdown with hours, minutes, and seconds, along with useful time information like the 24-hour format, military time notation, and what percentage of the day has passed. If the target time has already passed today, the countdown automatically shows time until tomorrow's occurrence.
Frequently Asked Questions
Select your target time using the hour, minute, and AM/PM selectors, then click "Calculate." The countdown updates every second, showing the remaining hours, minutes, and seconds until that time. If the selected time has already passed today, the countdown targets that time tomorrow.
The calculator uses your local system time zone. All calculations and countdowns are based on your device's current time. If you need to compare times across time zones, use our Time Zone Converter tool.
In addition to the countdown, the calculator shows the current time in 24-hour format, military time notation, percentage of the day that has passed, and the total hours, minutes, and seconds since midnight.