Naming and aliases
Twin/Single and Full/Double are paired aliases in Canadian retail; the seller’s model dimensions still control.
Canadian names resemble US names, but Canadian evidence and finished-product variations are kept separate.
Twin/Single and Full/Double are paired aliases in Canadian retail; the seller’s model dimensions still control.
These are nominal reference dimensions, not a promise that every finished mattress, bed base, fitted sheet or frame opening will match.
Complete CA reference table
Native units are retained. BedMetric derives the second unit system from the same millimetre value so the two displays cannot drift apart.
| Market + name | Native figure | Centimetres | Inches | Evidence type |
|---|---|---|---|---|
| CA TwinAlso: Single | 38 × 75 in | 96.5 cm × 190.5 cm | 38 in × 75 in | conventionbounded confidence |
| CA Twin XLAlso: Extra-long Twin | 38 × 80 in | 96.5 cm × 203.2 cm | 38 in × 80 in | manufacturer examplebounded confidence |
| CA FullAlso: Double | 53 × 75 in | 134.6 cm × 190.5 cm | 53 in × 75 in | conventionbounded confidence |
| CA Queen | 60 × 80 in | 152.4 cm × 203.2 cm | 60 in × 80 in | conventionbounded confidence |
| CA King | 76 × 80 in | 193 cm × 203.2 cm | 76 in × 80 in | conventionbounded confidence |
Tolerance and fit
Sealy Canada says actual finished size may vary by model, generally ±½–1 in.
Measure the finished product and the frame’s internal opening. Do not infer compatibility from a market name or a rounded conversion.
How to measure correctly →Three useful CA comparisons
Differences: 0.0 cm width, 12.7 cm length and 6.3% area relative to CA Twin XL.
Differences: 17.8 cm width, 12.7 cm length and 17.2% area relative to CA Queen.
Differences: 40.6 cm width, 0.0 cm length and 21.1% area relative to CA King.
Cross-country warning
A matching name in another country is not proof of the same dimensions. Use mattress sizes by country or compare two qualified records before buying.
Evidence for this answer
- IKEA Canada — Mattress guideChecked 27 August 2026. Canadian retailer evidence; manufacturer presentation not reproduced.
- Sealy Canada — Frequently asked questionsChecked 27 August 2026. Finished-product examples and stated ±½–1 inch model variation only.
Correction route: If a current source or product specification conflicts with this page, send the page URL and evidence through the corrections process.