A king size duvet measures 225 x 220cm - wider and longer than a double duvet, designed to give generous overhang on both sides of a king size bed. At Land of Beds, we stock around 20 king size duvets across feather and down, synthetic, cooling, and all seasons constructions, from brands including Vispring, Tempur, Laura Ashley, Emma, Sleepeezee, and Simba, in tog ratings from summer weight through to 13.5 tog. Free delivery on orders over £100 and expert advice seven days a week.
Browse the full king size duvet range below, or speak to our team for a personal recommendation based on your sleep temperature and the season. We are available seven days a week.
A king size duvet is not simply a larger version of a double. At 225 x 220cm, a king size duvet provides the generous overhang that makes a made bed look properly dressed and keeps the duvet in place when two people are using it. Buying a double duvet for a king size bed is one of the most common bedding mistakes - you end up with either no overhang or constant overnight tug-of-war. The size is the first thing to get right. From there, two decisions determine whether the duvet actually suits you: tog rating and fill type. Tog determines warmth. Fill type determines breathability, weight, and care requirements. Getting both right for your sleep temperature and the season is what turns a duvet from something you tolerate into something that genuinely improves your sleep. This guide covers both. For a full overview, see our expert guide: Duvet Buying Guide.
Three things determine whether you are buying the right king size duvet.
| Factor | Why It Matters | What to Check |
|---|---|---|
| Tog rating | Tog measures thermal insulation - the higher the tog, the warmer the duvet. The right tog depends on how warm or cold you sleep and the season you need it for. Buying the wrong tog is the most common reason people are either too hot or too cold in bed. | Match the tog to your sleep temperature. Hot sleepers need lower tog; cold sleepers need higher. See the tog guide below. |
| Fill type | The material inside the duvet determines how it feels, how it breathes, and how long it lasts. Feather and down is lighter and more breathable than synthetic. Synthetic is more affordable and easier to wash. Cooling duvets use specialist materials to actively manage heat. | Match the fill to your priorities - breathability, warmth, care ease, or allergy needs. |
| Size accuracy | A king size duvet must measure 225 x 220cm to fit a king size bed properly. Some products described as king size may vary slightly. Always check the listed dimensions before ordering. | Confirm the dimensions on the individual product listing, not just the size label. |
Not sure which tog or fill is right for you? Speak to our team on 01928 242829.
| Size | Duvet Dimensions | Bed Size It Fits |
|---|---|---|
| Double | 200 x 200cm | Double bed (135 x 190cm) |
| King Size | 225 x 220cm | King size bed (150 x 200cm) |
| Super King Size | 260 x 220cm | Super king bed (180 x 200cm) |
A king size duvet on a king size bed gives approximately 37cm of overhang on each side and 10cm at the foot - enough to tuck in if preferred or leave draped. Do not use a double duvet on a king size bed; the overhang will be minimal and the duvet will be pulled to one side overnight.
Tog is the unit of thermal insulation. Here is a plain reference for king size duvet buyers.
| Tog Rating | Season and Use | Best For |
|---|---|---|
| 1 to 4.5 tog | Summer, warm bedrooms, or year-round for very hot sleepers | Hot sleepers, warmer months, those who consistently overheat at night |
| 7 to 10.5 tog | Spring and autumn - an all-round everyday weight | Most people for year-round use in a centrally heated home |
| 13.5 to 15 tog | Winter and cold bedrooms | Those who feel the cold, older properties, winter months |
| All seasons | Two separate duvets that attach together | Those wanting one long-term solution across all seasons - use separately in warmer months, combined in winter |
If you consistently sleep warm regardless of season, choose one tog lower than you think you need. If you and your partner have different temperature preferences, an all seasons duvet gives more flexibility - or consider two separate single duvets on a king size bed.
The fill inside a king size duvet determines how it feels to sleep under and how you care for it.
| Fill Type | How It Performs | Best For |
|---|---|---|
| Goose Down | The lightest and most breathable natural fill. Highest warmth-to-weight ratio of any fill type. Luxurious feel. Dry clean recommended. | Those wanting a premium natural fill, hot sleepers who still need warmth in winter, long-term investment |
| Duck Down and Feather | A blend of feathers and down. Naturally breathable and good insulation. Slightly heavier than pure goose down. Dry clean or professional laundering recommended. | Those wanting natural breathability at a more accessible price than goose down |
| Synthetic / Hollow Fibre | Hypoallergenic and usually machine washable. More affordable than natural fills. Heavier for the same warmth level. | Allergy sufferers, those wanting easy home care, a practical everyday option |
| Cooling | Specialist materials designed to draw heat away from the body. Lower tog with high temperature management. Care varies by product - check individual listing. | Hot sleepers, those with night sweats, warm bedrooms, warmer months |
| All Seasons | Two separate duvets - a lighter and a medium weight - that fasten together for winter warmth and can be used separately in warmer months. | Those wanting one long-term purchase across all seasons, couples with different temperature preferences |
Choose goose down if:
Choose duck down and feather if:
Choose synthetic if:
Choose cooling if:
Choose all seasons if:
In our experience, the single most common duvet mistake is buying too high a tog. Most people in a centrally heated UK home will find 10.5 tog adequate for all but the coldest nights. If you regularly push the duvet off during the night but feel cold when you do, a lower-tog duvet with better breathability - particularly down or a quality cooling synthetic - is usually the right move rather than simply going down in tog.
| Fill Type | Washing and Drying | How Often |
|---|---|---|
| Goose down / Duck feather | Dry clean or professional laundering recommended. Some models allow a gentle machine wash - check the label. Tumble dry on low with dryer balls to restore loft, or air dry flat. | Once or twice a year. Always use a duvet cover. |
| Synthetic | Most are machine washable - check the listing for temperature and cycle. Use a large capacity machine (at least 8kg). Tumble dry on low or air dry. | Two to three times a year |
| Cooling / Specialist | Varies by product - always check the care label on the individual listing before washing. | As needed |
Using a duvet cover extends the time between washes significantly and protects the duvet from body oils and moisture. Browse our duvet cover sets for king size options.
| Item | Included? |
|---|---|
| Duvet | Yes - always |
| Care guide | Yes - always included |
| Guarantee | Yes - ranges from 1 to 3 years depending on brand and model. Check individual listing. |
| Duvet cover | No - sold separately. Browse our duvet cover sets. |
| Pillows | No - sold separately. Browse our pillows. |
Always check the individual product listing for full details before purchasing. This varies between products.
| What We Offer | Why It Matters to You |
|---|---|
| 50+ years of expertise | Honest advice on which tog and fill type will suit your sleep temperature and the season |
| Around 20 king size duvets | Feather, down, synthetic, cooling, and all seasons options from Vispring, Tempur, Emma, Laura Ashley, Sleepeezee, and Simba |
| Free UK delivery on orders over £100 | No hidden delivery charges on the vast majority of orders. Some remote postcodes may incur a surcharge - see our delivery page for details. |
| Price Promise Guarantee | We'll match any like-for-like price you find elsewhere |
| Interest-free finance available | Spread the cost on eligible orders - see our finance page for terms |
| Expert advice, 7 days a week | Real people via phone, chat, or in-store - no scripts, no pressure |
| Family-run, independent retailer | We recommend what's right for you, not what generates the best margin |
| Rated Excellent on Trustpilot | Real feedback from verified customers across thousands of orders |
Not sure which tog, fill, or brand is right for your sleep style and bedroom? Our team can help you work through it quickly. Chat online, call us, or visit our showrooms in Cheshire and Greater Manchester. We're open seven days a week.
| How to Reach Us | What to Expect |
|---|---|
| Live chat | Fast responses for quick questions. Available during opening hours. |
| Phone - 01928 242829 | Speak directly with a sleep expert. Best for advice on tog rating, fill type, and which duvet suits your sleep temperature. |
| In-store (Cheshire / Greater Manchester) | See and feel duvet options in person. See our store locations. |
| Help Centre | Buying guides, size guides, and FAQs available 24/7. Visit our help and advice section. |
| Question | Answer |
|---|---|
| What size is a king size duvet? | A standard UK king size duvet measures 225 x 220cm. This is designed to fit a king size bed (150 x 200cm) with overhang on both sides and at the foot. Always check the dimensions on the individual product listing before ordering, as some products labelled king size may vary slightly. |
| Can I use a double duvet on a king size bed? | We would not recommend it. A double duvet measures 200 x 200cm, which gives very little overhang on the sides of a king size bed and will be pulled to one side when two people are sleeping under it. A king size duvet is the correct size for a king size bed. |
| What tog duvet do I need for a king size bed? | The right tog depends on how warm or cold you sleep and the season. For a centrally heated UK home, 10.5 tog suits most people for everyday year-round use. If you sleep very warm, 4.5 tog or a cooling duvet may be more appropriate. If you feel cold in winter, 13.5 tog gives more warmth. An all seasons duvet gives you flexibility across the year with two layers you can use separately or combined. |
| What is the difference between goose down and duck down? | Both are natural fills that provide warmth relative to their weight. Goose down clusters are generally larger than duck down clusters, which gives better loft and a higher warmth-to-weight ratio - you get the same warmth for less weight. Goose down is typically more expensive as a result. Duck down and feather blends are more affordable and still significantly more breathable than synthetic alternatives. |
| Are feather and down duvets suitable for allergy sufferers? | Natural down can trigger allergies in some people, though modern down duvets are thoroughly cleaned and many carry hypoallergenic treatments. If you have a known feather or down allergy, a synthetic duvet is the safer choice - modern synthetic fills can closely replicate the feel of down while being hypoallergenic and machine washable. |
| How do I wash a king size duvet? | It depends on the fill. Most synthetic duvets are machine washable - use a large capacity machine (at least 8kg) and follow the care label temperature and cycle. Natural feather and down duvets usually require dry cleaning or professional laundering. Cooling and specialist duvets vary - always check the care label on the individual product. Using a duvet cover and washing it regularly significantly reduces how often the duvet itself needs cleaning. |
| What is an all seasons duvet? | An all seasons duvet consists of two separate duvets - typically a lighter 4.5 tog and a medium 9 tog - that fasten together to create a combined 13.5 tog winter weight. Used separately for spring and summer, combined for autumn and winter. It is a practical long-term solution for those who want one purchase that adapts across the seasons. |
| Do you offer free delivery on king size duvets? | Yes, free UK delivery is included on orders over £100, which covers the majority of our king size duvet range. Some products below this threshold or in remote postcodes may have delivery charges - check the individual listing. See our delivery page for full details. |
| Can I buy a king size duvet on finance? | Yes. Interest-free finance is available on eligible orders. See our finance page for full details on terms, eligibility, and how to apply. |
