Sauna Session Timer
Set your rounds, heat minutes, and cool-down minutes, then start the timer to follow the schedule live — each phase and how much time is left in it, right on screen.
Session timer
| Round | Phase | Starts | Ends |
|---|---|---|---|
| 1 | Heat | 0 min | 12 min |
| 1 | Cool-down | 12 min | 17 min |
| 2 | Heat | 17 min | 29 min |
| 2 | Cool-down | 29 min | 34 min |
| 3 | Heat | 34 min | 46 min |
| 3 | Cool-down | 46 min | 51 min |
Building a round-based session
The timer lays out every round in advance — heat, then cool-down, repeated for however many rounds you set — so the whole session is mapped out before you start the clock. Each round is identical in length by default, matching the common practice of keeping a steady rhythm rather than lengthening or shortening rounds as the session goes on.
Once running, the timer tracks which phase you're in and how much time remains in it, so you can leave your phone alone and just watch the room instead of a countdown.
Frequently Asked Questions
How many rounds does a traditional sauna session have?
Two to three rounds is the most common pattern in Finnish sauna culture, each round a stretch of heat followed by cooling down — outdoors, in a shower, or in cold water — before returning for another round. There's no fixed rule; some sessions run a single long round, others run four or five shorter ones.
How long should each heat round last?
Most guidance settles on roughly 8 to 15 minutes per heat round, long enough to work up a real sweat without pushing past what feels comfortable. Newer bathers often start at the shorter end and extend rounds as they get used to the heat.
Why build in a cool-down between rounds at all?
The contrast between hot and cool is central to the tradition — stepping out, showering, or taking a cold plunge brings the body back down before the next round of heat. It also simply makes a longer session sustainable; going straight through without a break is unusual even among frequent sauna-goers.
Can I use this for a single continuous session with no rounds?
Yes — set rounds to 1 and cool-down minutes to 0, and the timer runs a single heat phase for whatever length you choose, no cycling required.
Cultural and educational tool only, not a medical or safety device. These are general session-length traditions, not a recommendation for how long any individual should stay in heat — listen to your own body and your sauna's posted guidance, and exit any round early if you feel unwell.