One of the most common duvet shopping mistakes is choosing the wrong size. A duvet that's too small leaves you fighting for covers, while one that's too large can bunch up and look messy. Australian bed sizes differ from US and UK standards, making it essential to understand local dimensions. This guide ensures you get the perfect fit every time.
Understanding Australian Bed Sizes
Australian bed sizes are standardised, though slight variations exist between manufacturers. Here are the standard dimensions for Australian beds:
| Bed Size | Mattress Width | Mattress Length |
|---|---|---|
| Single | 92cm | 187cm |
| King Single | 107cm | 203cm |
| Double | 138cm | 187cm |
| Queen | 153cm | 203cm |
| King | 183cm | 203cm |
| Super King | 204cm | 204cm |
⚠️ Size Variations
Note that "Long Single" (92 x 203cm) and "Long Double" (138 x 203cm) also exist in Australia. If you have one of these, you may need to size up for adequate length coverage. Always measure your mattress before purchasing.
Recommended Duvet Sizes
A properly sized duvet should hang evenly over the sides of your bed, providing coverage and an attractive drape. Here are recommended duvet dimensions for each bed size:
| Bed Size | Recommended Duvet | Approx. Overhang |
|---|---|---|
| Single (92 x 187cm) | 140 x 210cm | 24cm each side |
| King Single (107 x 203cm) | 160 x 220cm | 26cm each side |
| Double (138 x 187cm) | 180 x 210cm | 21cm each side |
| Queen (153 x 203cm) | 210 x 210cm | 28cm each side |
| King (183 x 203cm) | 240 x 210cm | 28cm each side |
| Super King (204 x 204cm) | 270 x 240cm | 33cm each side |
How Much Overhang Do You Need?
The ideal overhang depends on several factors:
Minimum Overhang: 20-25cm
This provides basic coverage but may leave gaps at the bottom or sides, especially if you're an active sleeper. Adequate for children's beds or minimalist looks.
Ideal Overhang: 25-35cm
This range provides comfortable coverage with enough material to tuck in if desired. It looks balanced and prevents drafts. Most recommended duvet sizes fall into this range.
Generous Overhang: 35-45cm
Creates a luxurious, hotel-style look with the duvet nearly reaching the floor. Better for couples who fight for covers, as there's more material to share.
💡 Mattress Depth Matters
If you have a deep mattress (over 35cm), consider sizing up your duvet. A thick pillow-top or mattress topper effectively raises your sleeping surface, reducing the overhang of a standard-sized duvet.
Australian vs. International Sizes
If you're shopping from international retailers or purchasing imported products, be aware of size differences:
US Sizes
- US Twin (99 x 191cm) is slightly larger than Australian Single
- US Full/Double (137 x 191cm) is similar to Australian Double
- US Queen (152 x 203cm) is very close to Australian Queen
- US King (193 x 203cm) is larger than Australian King
- US California King (183 x 213cm) is longer but narrower
UK Sizes
- UK Single (90 x 190cm) is similar to Australian Single
- UK Double (135 x 190cm) is similar to Australian Double
- UK King (150 x 200cm) is close to Australian Queen
- UK Super King (180 x 200cm) is close to Australian King
When purchasing internationally, always check exact dimensions rather than relying on size names, as they don't translate directly between countries.
Special Situations
Couples with Different Temperature Preferences
If one person sleeps hot while the other sleeps cold, consider using two single duvets on a larger bed (the Scandinavian method). Two single duvets (140 x 210cm each) work well on a King bed, giving each person control over their own coverage and warmth level.
Children's Beds
For cot beds and toddler beds, look for specifically sized children's duvets (typically 100 x 120cm or 120 x 150cm). Standard single duvets are too large and can be a safety hazard for young children. See our duvet safety guide for more information.
Bunk Beds
Bunk beds typically use single mattresses but may have height restrictions. Choose a single duvet that won't hang too close to a heater or obstruct movement. Some parents prefer slightly smaller duvets for top bunks.
Adjustable Beds
If you have an adjustable bed that elevates at the head or foot, consider a slightly larger duvet to accommodate movement without exposing feet when the bed is elevated.
Sizing for Duvet Covers
When purchasing duvet covers, match them to your duvet size, not your bed size. A duvet cover should be the same size or very slightly larger than your duvet to ensure a good fit:
- Cover 5-10cm larger than duvet: Allows easy insertion and removal
- Exact size match: Snug fit, minimal bunching
- Cover smaller than duvet: Don't do this—it causes bunching and discomfort
Common Sizing Mistakes
Mistake 1: Matching Duvet Size to Bed Name
Just because you have a Queen bed doesn't mean you need a "Queen" duvet. Always verify dimensions. Some brands label sizes differently, and international products may not match Australian standards.
Mistake 2: Not Accounting for Mattress Depth
A standard 25cm deep mattress and a 40cm pillow-top mattress require different duvet sizes. If your mattress is deeper than average, size up.
Mistake 3: Forgetting About Covers
If you already own duvet covers, ensure your new duvet matches. There's nothing more frustrating than a duvet that doesn't fit properly in its cover.
Mistake 4: Going Too Small
When in doubt, size up. A duvet that's slightly too large is far more comfortable than one that's too small. Extra material can tuck in; insufficient material can't be stretched.
✓ The Hotel Tip
Hotels often use one size larger than the bed for that luxurious, fully-covered look. For example, a King duvet on a Queen bed provides extra generous coverage. Consider this approach for master bedrooms.
How to Measure Your Bed
To ensure you're buying the right size:
- Measure the mattress: Width from edge to edge, length from head to foot
- Measure mattress depth: From the base to the top of the mattress
- Consider base height: How high is your bed frame off the ground?
- Add desired overhang: Typically 25-35cm on each side and the foot
- Check existing covers: If you have duvet covers to reuse, measure them too
Quick Reference Chart
For easy reference when shopping:
| If Your Bed Is... | Buy Duvet Size... |
|---|---|
| Single or Long Single | 140 x 210cm |
| King Single | 160 x 220cm |
| Double or Long Double | 180 x 210cm |
| Queen | 210 x 210cm |
| King | 240 x 210cm |
| Super King | 270 x 240cm |
Final Thoughts
Getting the right duvet size is a simple step that significantly impacts your sleeping comfort and bedroom aesthetics. Take a few minutes to measure your bed and compare with available duvet sizes before purchasing. Remember that Australian sizes differ from international standards, so always check dimensions rather than relying on size names alone.
If you're uncertain, most retailers have generous return policies—and it's always worth exchanging a duvet for the right size rather than living with one that doesn't fit properly. Sweet dreams start with bedding that fits!