Set an alarm when your phone is not handy
A browser-tab alarm for a time like 07:30 — with an honest warning about what a page timer can and cannot do.
Tools used in this guide
The job
You are on the computer already, or your phone is charging elsewhere — a one-off alarm that rings from a tab covers it. Type the time, keep the tab open, stop it when it rings.
Flexible input
07:30, 18:45, 7:30 AM, even '730 pm' all parse. If the time already passed today it rolls to tomorrow — the countdown shows which day it will ring.
Worked example
At 9 PM you set 06:30 — it arms for tomorrow morning, shows ~9½ hours on the countdown, and starts beeping at 6:30 AM. Set 22:15 instead and it rings tonight.
Where it stops
A tab timer is not a system alarm: it dies with the tab, sleeps with the laptop lid, and browsers may need one click before audio can play. Do not rely on it for flights or medication.