30-Minute Timer
Press start. It counts down to zero and rings an alarm — nothing to download, nothing to sign up for.
About this 30-minute timer
A one-click 30-minute countdown, most often used for a workout block, a standard study session, half a Pomodoro double-session, or baking check-ins. It runs in your browser and rings when it reaches zero.
Half an hour: the default work block
Thirty minutes is the most common calendar slot, the standard length of a solid workout block, and a comfortable study session for most people. It's the second most-searched timer length after five minutes. Long enough for meaningful work, short enough that you can hold real focus without flagging.
30 minutes in other units
| Seconds | 1,800 |
|---|---|
| Minutes | 30 |
| Hours | 0.5 |
| Milliseconds | 1,800,000 |
| Share of a day | 2.08% |
Tips for using a 30-minute timer
- Thirty minutes of moderate exercise most days is the general activity guideline used by most health bodies.
- For studying, 30 minutes on then 5-10 off tends to beat marathon sessions for retention.
- It's a good baking check-in point — most cakes and roasts want their first look around here.
Frequently asked questions
How do I set a 30-minute timer?
Press Start above and the page counts down from 30 minutes on its own — nothing to type. Need a little longer? Press +1 min while it runs, or pick a nearby duration from the list.
How many seconds are in 30 minutes?
30 minutes is 1,800 seconds — 30 minutes or 0.5 hours. That's 2.08% of a day.
What is a 30-minute timer good for?
People commonly use a 30-minute timer for a workout block, a standard study session, half a Pomodoro double-session, or baking check-ins.
Will it keep time if I switch tabs?
Yes. The countdown is measured against your device clock rather than counting screen refreshes, so it stays accurate in a background tab and the alarm fires on time. Some browsers need one click on the page before they allow sound.