Blanket sizing is less standardized than most people expect. The same product category — "throw blanket" or "wool blanket" — can span a wide range of dimensions depending on the brand and market. Knowing what the numbers mean in practice, and matching them to how you actually plan to use the blanket, makes the difference between a purchase that works and one that doesn't.
Understanding the Two Main Formats
Wool blankets broadly fall into two formats: square throws and rectangular blankets. Each suits different uses, and the right choice depends on where the blanket will live and how it will be used day to day.
Square throws — typically around 130x130cm to 140x140cm — are the more common format in European and UK markets. At 140x140cm, a square throw provides full coverage for one person seated or curled up on a sofa, and folds neatly over a sofa arm or the back of a chair when not in use. The square format tends to drape more symmetrically on furniture than a rectangular throw, which can trail unevenly if the proportions do not suit the piece.
Rectangular blankets — ranging from around 127x152cm (50"x60") at the smaller end to 200x230cm and above at the larger end — suit those who need more coverage: stretching out fully on a wide sofa, sharing with another person, or using the blanket across a bed as an additional layer.
Throw vs Blanket: Does the Name Matter?
In practical terms, the distinction is mostly about size and intended use rather than construction. A throw is generally understood to be a smaller, lighter piece — designed for single-person use on a sofa or chair. A blanket implies a larger format suitable for the bed or for more substantial coverage.
The naming is not standardized across brands or markets, so always check the dimensions rather than relying on the product name alone.
Choosing by Use Case
For sofa use — single person
A 140x140cm square throw is the most practical size for everyday single-person sofa use. It provides enough coverage to wrap around one person comfortably, sits proportionally on most standard two and three-seater sofas, and is easy to fold and store. If you tend to stretch out fully rather than sit upright, or if you share the sofa regularly, a larger rectangular format gives significantly more coverage.
For sofa use — two people, or a larger sofa
A 200x230cm blanket works well for two people sharing a sofa, or for anyone who prefers to be fully covered from shoulders to feet while lying down. At this size, the blanket also transitions naturally to bed use — as an additional layer on top of existing bedding, or as a standalone cover in milder conditions.
For bed use
For use across a bed as a primary or additional layer, a 200x230cm blanket provides comfortable coverage for a single or double bed. It covers the full sleeping area without excess bulk, and its weight at 450 GSM is substantial enough to replace a lighter duvet in autumn and winter conditions.
For travel, outdoor use, or carrying on the go
A 140x140cm square format is the most portable option — compact enough to fold into a bag, large enough to provide genuine warmth on a long flight, in an air-conditioned space, or outdoors. For this kind of use, a blanket with a more expressive color or pattern also works harder — it reads well in outdoor settings and is easier to spot and identify when packed.
A Note on Size and Weight
Larger blankets are heavier, which affects both warmth and practicality. A 200x230cm blanket at 450 GSM is a substantial piece — warm and enveloping, but designed for home use rather than portability.
For sofa throws intended for daily indoor use, a 140x140cm format at 400–450 GSM hits a practical balance: warm enough for autumn and winter, light enough to handle easily, and compact enough to store without taking up significant space. For more on how GSM affects blanket performance, see: What Does GSM Mean for Blankets?
Standard Sizes by Market
Sizing conventions vary by region, which is worth knowing if you are purchasing from an international brand.
In the US and Canada, throw blankets are most commonly found in rectangular formats — 50"x60" (127x152cm) is the standard single-person throw size, with larger options at 60"x80" (152x203cm). Bed blankets typically follow standard mattress dimensions.
In the UK and Europe, square throws in the 130–140cm range are widely used and considered a standard sofa format. Larger rectangular blankets follow metric sizing — 150x200cm for single bed use, 200x230cm and above for double.
In Australia, both formats are common, with sizing conventions closer to the UK and European market than the US.
Which Size Is Right for You?
To summarize the key decision points:
If you want a blanket primarily for single-person sofa use indoors — something to reach for on a cold evening, fold over the armrest when not in use, and live with daily — a 140x140cm square throw is the most practical choice. It is the right size for the space, easy to manage, and versatile enough to work in most rooms.
If you want a blanket that covers two people on the sofa, transitions to the bed, or provides fuller body coverage, a 200x230cm format is the better fit. At this size, the blanket becomes a more permanent fixture — something that earns its place in a bedroom or living room rather than being moved around frequently.
If you want something you can take with you — on a long journey, to an outdoor event, or simply between rooms — a 140x140cm format is the more portable option. A blanket in this size with a bolder color or pattern also works naturally in outdoor settings, where it reads well against a varied background.
Frequently Asked Questions
What size wool blanket is best for a sofa?
For single-person use, a 140x140cm square throw provides comfortable coverage and sits proportionally on most sofas. For two people or a larger sofa, a 200x230cm blanket is the more practical choice.
What size blanket do I need for a double bed?
A 200x230cm blanket provides comfortable coverage for a double bed as an additional layer. If you want the blanket to hang over the sides, allow extra width beyond the mattress dimensions.
Is a 140x140cm blanket big enough?
For one person seated or curled up on a sofa, yes. For two people sharing, or for use across a bed, a larger format is more suitable.
What is the difference between a throw and a blanket?
In general use, a throw is smaller and designed for single-person sofa or chair use; a blanket is larger and better suited to bed use or full-body coverage. The distinction is not standardized — always check the listed dimensions before purchasing.
Can I use a large blanket as a sofa throw?
Yes, though a 200x230cm blanket will be more fabric than most sofas need for decorative draping. It works better as a functional sofa cover for two people, or folded across the back of a larger sofa, than as a single-person throw.
Find the Right Size for You
For single-person indoor sofa use:
Signature Medallion Alpaca & Cashmere Throw — 140x140cm — a refined everyday throw in Caramel Orange, Feather Grey and Navy.
For two people, the bed, or fuller coverage:
Signature Grid Alpaca & Cashmere Blanket — 200x230cm — a substantial home blanket in Terracotta, Light Camel and Slate Grey.
For travel, outdoor use, or life on the go:
Chroma Nomad Plaid Lambswool & Cashmere Throw — 140x140cm — a bold plaid throw in Blue & Orange, Yellow & Teal and Pink & Violet, built for wherever you take it.