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Sleep diary · watches and rings
Use your Fitbit sleep in a sleep diary
Export your Fitbit or Pixel Watch sleep data with Google Takeout, then bring it into a free, private sleep diary for insomnia (CBT-I). Step by step.
Step 1: export your data
- On a computer or phone browser, go to takeout.google.com and sign in with the Google account your Fitbit uses.
- Tap Deselect all, then tick Fitbit only.
- Tap Next step, then Create export. Google emails you when it is ready (often within an hour).
- Download the zip file from that email.
Step 2: bring it into the diary
Open the sleep diary, tap From my watch or phone, then Choose file and pick the zip file from Google Takeout (or the sleep-….json files inside it). You will see every night it found; tick the ones to add.
What the diary reads
Each main sleep: bedtime, how long it took to fall asleep, minutes awake, wake-up time and the number of wake-ups. Naps go into the diary's nap field.
Fitbit accounts are moving to Google accounts. If Takeout does not show Fitbit, make sure you signed in with the Google account linked to your Fitbit.
🔒 Your file stays with you
The file is read inside your browser, on your own device. It is never uploaded to WhySigh or anyone else. The nights you add are saved in your browser, and if you sign in, as an encrypted copy only you can read.
🧭 Why you still check each night
Studies that compare watches and rings with sleep-lab tests find they estimate total sleep fairly well but are least accurate at telling when you are awake. And chasing better tracker numbers can itself make sleep worse; sleep researchers call it “orthosomnia”. A sleep diary for insomnia is about the night as you lived it, so the imported times are a starting point you confirm.
Sources: Kainec KA, Caccavaro J, Barnes M, et al. Evaluating accuracy in five commercial sleep-tracking devices compared to research-grade actigraphy and polysomnography. Sensors. 2024;24(2):635. → · Baron KG, Abbott S, Jao N, Manalo N, Mullen R. Orthosomnia: are some patients taking the quantified self too far? J Clin Sleep Med. 2017;13(2):351–354. →
Other watches and rings
Common questions
Do I need the whole Takeout file?
No. Choosing only Fitbit keeps it small. You can also unzip it and pick just the files that start with “sleep-”.
Does this work for the Google Pixel Watch?
Yes. Pixel Watch sleep is stored with Fitbit, so it comes in the same Takeout export.
Is my health data uploaded anywhere?
No. The file is read inside your browser on your own device. Nothing is sent to WhySigh or anyone else.
Does it cost anything?
No. The sleep diary and the import are free, with no ads and no sign-up.
Can a watch diagnose insomnia or sleep apnea?
No. A watch can help you notice patterns, but only a clinician can diagnose a sleep problem. Loud snoring, gasping at night or heavy daytime sleepiness are reasons to see a doctor.