---
title: "Baby TOG calculator UK | BabyNido"
description: "Match sleeping-bag TOG and clothes to room temperature. Manufacturer-style starting map, not a clinical protocol. Works without JavaScript."
url: "https://babynido.co.uk/tools/tog-calculator"
---

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# Baby TOG calculator UK
 

By [Hannah Cole](/author/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](/guides/baby-sleeping-bags-tog-uk).

     
Verdict
 
Use this when you know the room temperature. It suggests a starting TOG and layer, then you check the baby’s chest. It will not override The Lullaby Trust: keep the cot clear, sleep on the back, and avoid overheating. Skip it if you cannot measure the room — buy a thermometer first.
 
 Not for:  Not for premature babies still under hospital overlay advice, and not a substitute for the sleeping-bag maker’s own chart.
        Room temperature (°C)     Suggest 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.

    Starting map used by this tool (checked against typical UK brand charts, 13 Aug 2026). Always prefer the bag maker’s own chart.       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             Also browse  [All tools](/tools)[Guides](/guides)[Skip-list](/skip)[Shop kit](/products)     
## Guides that use this tool
   -    [   
sleep
 
Baby sleeping bags UK: TOG and skip
 
Baby sleeping bags and TOG in the UK: which TOG, what to wear underneath, Grobag-style listings to compare, and when a bag is the wrong product.
 ](/guides/baby-sleeping-bags-tog-uk)   
-    [   
sleep
 
Cot mattresses and safer sleep in the UK
 
How to choose a UK cot mattress: firm, flat, waterproof, the right size. What The Lullaby Trust wants — and what to skip.
 ](/guides/cot-mattress-safer-sleep-uk)   
-    [   
clothes
 
Babygrow vs sleepsuit: same garment?
 
In the UK a babygrow and a sleepsuit are the same all-in-one. How they differ from bodysuits, and what to buy first.
 ](/guides/babygrow-vs-sleepsuit-uk)   
-    [   
planning
 
Newborn essentials UK: what to skip
 
What a UK newborn actually needs — sleep, car seat, nappies, a few babygrows — and the gadgets you can skip. Desk-researched, sourced.
 ](/guides/newborn-essentials-uk)   
-    [   
sleep
 
Nursery checklist UK
 
UK nursery checklist that starts with a clear cot and a firm mattress. What to skip: bumpers, nests, themes and gadgets.
 ](/guides/nursery-checklist-uk)   
-    [   
sleep
 
White noise machines UK: skip first
 
White noise is optional UK baby kit, not a safer-sleep device. Test a phone first. Buy the mattress before a machine.
 ](/guides/white-noise-machines-uk)