Skip to content

TOG Rating

By , Editor Updated First published

Desk research from official sources. Not a product test or medical advice. How we check facts.

In short

TOG rating, or Thermal Overall Grade, measures how strongly a duvet resists heat flow. One TOG equals 0.1 m²·K/W under standard test conditions. In UK bedding, lower TOG means less insulation and higher TOG means more. TOG describes thermal resistance, not fill quality or duvet weight alone.

About 1 minutes to read

Close view of a plush velvet headboard and matching upholstered bed
Many bed words describe fabric, shape or storage — this is how they look in a room.

Definition. TOG (Thermal Overall Grade) measures thermal resistance of a textile such as a duvet. Higher TOG means greater insulation for the same construction class.

TOG is a thermal-resistance rating, not a subjective warmth score. Compare TOG values only within the same product category and test method context.