Tog (tog)
Unit of thermal insulance used for duvets and sleeping bags in the UK: exactly 0.1 m²·K/W.
What is a tog?
- Symbol
- tog
- Quantity
- Thermal Insulance (R-value)
- Unit system
- other
- Definition
- Unit of thermal insulance used for duvets and sleeping bags in the UK: exactly 0.1 m²·K/W.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used in the United Kingdom and elsewhere to rate the warmth of duvets, sleeping bags and baby sleeping bags.
Tog in other thermal insulance (r-value) units
- 1 tog = 0.1 m²·K/WSquare meter kelvin per watt (RSI)
- 1 tog ≈ 0.5678263341 ft²·°F·h/BTUR-value (US)
- 1 tog ≈ 0.6451612903 cloClo
Tog quick reference
| Tog | Square meter kelvin per watt (RSI) | R-value (US) | Clo |
|---|---|---|---|
| 1 tog | = 0.1 m²·K/W | ≈ 0.5678263341 ft²·°F·h/BTU | ≈ 0.6451612903 clo |
| 10 tog | = 1 m²·K/W | ≈ 5.678263341 ft²·°F·h/BTU | ≈ 6.451612903 clo |
| 100 tog | = 10 m²·K/W | ≈ 56.78263341 ft²·°F·h/BTU | ≈ 64.51612903 clo |
| 1000 tog | = 100 m²·K/W | ≈ 567.8263341 ft²·°F·h/BTU | ≈ 645.1612903 clo |
Where the tog fits
The next larger thermal insulance (r-value) unit is the clo (clo). 1 tog ≈ 0.6451612903 clo, and 1 clo = 1.55 tog.
Frequently asked questions
- How many square meter kelvins per watt are in one tog?
- One tog = 0.1 m²·K/W (square meter kelvins per watt).
- How many R-value units (US) are in one tog?
- One tog ≈ 0.5678263341 ft²·°F·h/BTU (R-value units (US)).
- How many clo are in one tog?
- One tog ≈ 0.6451612903 clo (clo).