About the Random Time Generator
This random time generator picks times of day at random from a window you choose, for example between 09:00 and 17:00. You decide how many times to generate, round them to the nearest minute, five, ten, fifteen, thirty or sixty minutes, avoid repeats and sort them from earliest to latest. Times can be shown in 24-hour or 12-hour AM and PM format. It is handy for schedules and test data, for picking a random time for a reminder or break, for games and classroom activities, and for building example timetables or appointment slots.
Updated October 2026
How to use the Random Time Generator
- 1Set the earliest and latest time.
- 2Enter how many times you want, up to 1,000.
- 3Choose to round to the nearest 1, 5, 10, 15, 30 or 60 minutes.
- 4Tick 12-hour times, no repeated times and sorting as you need.
- 5Press Generate times and copy the list.
Ways to use random times
- Surprise reminders or study breaks during the day
- Spreading checks, audits or spot inspections across working hours
- Example appointment slots for a booking system test
- Classroom games about telling the time
- Random wake-up or exercise times for a challenge
Tips for realistic schedules
For appointment tests, use a 15- or 30-minute step, no repeated times and sorting. For log files, use a 1-minute step with repeats allowed, since real events often cluster. If you want times outside normal working hours, widen the window to cover the whole day, from 00:00 to 23:59, and use the 12-hour option if your audience expects AM and PM.
Related tools
If you need times that look natural, widen the window and use a 1-minute step, since people rarely do things exactly on the hour. For a rota or a rota-like test, use a 30-minute step and sort the list. Press the button several times if the first list does not suit you; each press gives a completely new set. The Random Date Generator picks dates, the Time Calculator adds and subtracts times, the Time Zone Converter shifts a time between cities, the Alarm Clock can ring at a time you pick, and the Random Number Generator covers plain numbers.
Features
- Random times within any window
- Steps of 1 to 60 minutes
- 12-hour or 24-hour display
- No repeated times option
- Sort from earliest to latest
- Up to 1,000 times at once
- Runs in your browser
Frequently asked questions
How are the times chosen?
The tool lists every time in your window that matches your step, then picks from that list at random. With a 15-minute step between 09:00 and 10:00 there are five possible times: 09:00, 09:15, 09:30, 09:45 and 10:00, and each has the same chance.
Can the window go past midnight?
No. The end time must not be earlier than the start time, so a window like 22:00 to 02:00 is not allowed. For a night window, generate two lists, 22:00 to 23:59 and 00:00 to 02:00, and combine them.
What does the step option do?
It rounds the possible times to a grid. A 30-minute step gives only times on the hour and half hour, while a 1-minute step allows any minute. Use 5 or 15 for appointment-style times and 1 for realistic timestamps.
What if I ask for more times than fit?
When repeats are not allowed and you ask for more times than there are slots, the tool tells you how many different times fit so you can narrow the step or widen the window. If repeats are allowed, you can ask for any number.
Can I get times with seconds?
No. The generator works to the minute. If you need seconds for test data, add them separately in your spreadsheet or use the Random Data Generator.
Is it suitable for security or lotteries?
No. It uses the standard random function in your browser, which is fine for planning, games and testing but not for anything where fairness or security matters.