Online Timer

Set a precise countdown with audio alerts. Perfect for managing tasks and time intervals.

Set a timer for a specific duration

Hours

Minutes

Seconds

Quick Timers

Timer Name

Alarm Sound

Set a timer for a specific duration

Countdown for 100 Hours

Start a 100 Hours timer with 7Alarm's free countdown tool. Whether for productivity or cooking, get an audio alert the moment time runs out. Input hours, minutes, and seconds, and start your 100 Hours countdown instantly.

Time now in these cities :

New York·Philadelphia, Pennsylvania·Chicago, Illinois·Houston, Texas·San Antonio, Texas·Dallas, Texas·Denver, Colorado·Los Angeles, California·San Diego, California·San Jose, California·Phoenix, Arizona·Anchorage, Alaska·Adak, Alaska·Honolulu, Hawaii·Toronto, Canada·Montreal, Canada·Winnipeg, Canada·Calgary, Canada·Vancouver, Canada·London, United Kingdom·Dublin, Ireland·Sydney, Australia·Melbourne, Australia·Brisbane, Australia·Perth, Australia·Adelaide, Australia·Wellington, New Zealand·Manila, Philippines·Singapore, Singapore·Tokyo, Japan·Seoul, South Korea·Taipei, Taiwan·Beijing, China·Shanghai, China·Urumqi, China·Berlin, Germany·Paris, France·Copenhagen, Denmark·Rome, Italy·Madrid, Spain·Ceuta, Africa, Spain·Canary Islands, Spain·Stockholm, Sweden·Lisbon, Portugal·Madeira, Portugal·Azores, Portugal·Helsinki, Finland·Athens, Greece·Istanbul, Turkey·Warsaw, Poland·Kiev, Ukraine·Moscow, Russia·New Delhi, India·Kolkata, India·Noronha, Brazil·São Paulo, Brazil·Rio de Janeiro, Brazil·Manaus, Brazil·Rio Branco, Brazil·Mexico City, Mexico·Santiago, Chile·Buenos Aires, Argentina·Dubai, United Arab Emirates