Baby TOG calculator UK
By Hannah Cole · Published 13 August 2026 · Last updated 13 August 2026
This is manufacturer-style starting guidance, not a Lullaby Trust table and not a medical device. Check the baby’s chest. Read sleeping bags and TOG.
What TOG should you start with at each room temperature?
Use the table if the form does not run. It is a starting map: cooler rooms, higher TOG; warmer rooms, fewer layers. The Lullaby Trust still wants about 16–20°C and no overheating. If the neck is sweaty, remove a layer immediately rather than waiting for a chart to agree.
| Room | Bag | Clothes |
|---|---|---|
| Under 16°C | 2.5 TOG | Sleepsuit; add a vest if the chest feels cool |
| 16–20°C | 1.0–2.5 TOG | Vest and/or sleepsuit — usual UK bedroom |
| 20–22°C | 0.5–1.0 TOG | Vest or short-sleeve bodysuit |
| 22–24°C | 0.5 TOG or less | Short-sleeve bodysuit or nappy |
| Over 24°C | No bag / very low TOG | Nappy; extra layers are the risk |
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