Choosing the right tog rating is one of the easiest ways to sleep comfortably all year round. Once you understand what tog actually means, picking the perfect duvet becomes simple. This guide breaks down the full tog scale so you can match your duvet to the season and your bedroom.
Our bedding specialists at SnugCity help customers find their ideal tog every single day so we've put this straightforward guide together based on those real conversations. You don't need any technical knowledge, just a quick read and a good idea of how warm you like to sleep.
By the end of this guide you'll know exactly which tog suits your bedroom, your budget, and every season of the year.
What Is a Tog Rating?
A tog rating measures how well a duvet holds onto heat. The higher the tog the warmer the duvet feels while a lower tog gives a lighter and cooler feel. Tog is a UK and Ireland measurement and it makes finding the right warmth level quick and easy.
Understanding the Tog Scale
The tog scale generally runs from around 1 to 15, with each range suited to a different time of year. Here's a quick reference table to help you choose at a glance.
Now let's look at each range in a little more detail.
Low Tog (1-4.5): Best for Summer
Light and breathable this range suits warm nights and rooms that hold heat well. It's a popular choice for anyone who tends to sleep warm or for homes without much cooling in the warmer months.
Mid Tog (7-10.5): Best for Spring and Autumn
This versatile range works beautifully during the in-between months, offering warmth without feeling heavy. Many people find it the most comfortable all round option since it suits milder UK weather for much of the year.
High Tog (12-15): Best for Winter
Cosy and warm, this range suits colder rooms and winter nights perfectly. It's especially popular in homes with less insulation or unheated bedrooms where extra warmth makes a real difference.
All-Season Duvets: The Best of Both Worlds
An all season duvet combines two lighter duvets usually a 4.5 tog and a 9 tog that pop together with small buttons or ties for a cosy 13.5 tog in winter. Simply separate them again come summer for a lighter feel giving you three warmth options from just one purchase.
This makes an all season option a fantastic choice for anyone who wants year round flexibility or who isn't quite sure which single tog to settle on.
What's the Highest Tog You Can Buy?
Most duvets go up to around 15 tog which comfortably suits even the coldest UK bedrooms. Duvets at this level often use synthetic fillings giving excellent warmth at a friendly price point though luxury natural fill options exist too.
For most homes, 15 tog is the perfect ceiling offering plenty of cosiness without needing anything heavier. Anything beyond this is rarely necessary, even during the coldest UK winters.
Tog vs Fill Power: What's the Difference?
Tog and fill power both relate to warmth but they measure different things. Tog rates overall insulation while fill power measures how fluffy and lofty the filling is, mostly used for down and feather duvets.
A higher fill power often means a lighter duvet at the same tog level since quality filling traps warmth more efficiently. This is worth knowing if you love the feel of a plush, luxury duvet, since two duvets with identical togs can feel noticeably different in the hand.
How Duvet Filling Affects Warmth
The filling inside your duvet plays a big part in how warm and comfortable it feels alongside the tog itself. Two duvets with the same tog can feel quite different depending on what's inside them.
Feather & Down
Slightly heavier than down feather duvets still offer great warmth and are usually a more affordable option. They're a lovely balance of comfort and value for everyday use.
Synthetic Fibre
Filled with materials like polyester, these duvets are hypoallergenic and easy to wash. They're a great everyday choice for busy households, families, and anyone who likes low maintenance bedding.
Feels like Down
Duck or goose down offers wonderful warmth for its weight giving a light or luxurious feel. Goose down tends to be extra fluffy and soft making it a favourite for a premium hotel style bed.
Choosing the Right Tog for Your Bedroom
Your ideal tog depends on a few simple things: how warm your room stays, how much heating you use, and your own personal preference. Central heating and thicker curtains can mean a lower tog feels perfectly cosy even in colder months.
Room position matters too, bedrooms above a garage or facing north often stay cooler so a slightly higher tog can help. If you share a bed with a partner who prefers a different warmth level, an all season or dual tog duvet is a lovely solution that suits you both.
What to Check Before Choosing Your Tog
A few quick checks make it easy to land on the perfect tog for your home no matter the season or your personal warmth preference:
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Think about how warm your bedroom typically feels through the seasons.
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Consider the filling type alongside the tog rating for the best comfort.
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Look at an all season option if you want flexibility year round.
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Check whether you and your partner prefer different warmth levels.
A little thought here means you'll enjoy your new duvet for years to come.
Duvet Tog FAQs
What tog duvet do I need for summer?
A 4.5 tog duvet is ideal for summer offering a light breathable feel on warmer nights. Some people even prefer a 2.5 tog if their room stays especially warm.
What tog duvet is best for winter?
A 13.5 to 15 tog duvet works beautifully for winter, giving plenty of warmth on the coldest nights especially in rooms without much heating.
What does tog mean on a duvet?
Tog is a rating that shows how well a duvet retains heat, higher the number, the warmer the duvet feels underneath it.
Can I combine two duvets for extra warmth?
Yes, all season duvets are designed to pop together giving you a warmer combined tog for winter use then separating again for lighter summer nights.
Final Thoughts on Choosing the Right Tog
Picking the right tog comes down to your bedroom, the season, and how warm you like to sleep. Use the scale above as your guide and consider an all season duvet if you want the ultimate flexibility.
Many people also find it helpful to own a lighter and a heavier duvet, so comfort feels effortless whatever the season brings. A well chosen tog rating makes every night's sleep feel effortless and comfortable.
Browse SnugCity's full range of duvets to find your perfect warmth today.