How to Find Your Size in Baserange (Their Sizing Is Its Own Language

By Ella Blake — fashion stylist | Tellar Fashion Hub — Always honest, unbiased, & unsponsored post

Baserange sizes using a number system — 00, 0, 1, 2, 3, 4 — that has absolutely nothing to do with standard UK, EU or US sizing, and if you go in blind, you will order the wrong thing. A Baserange size 1 is roughly equivalent to a UK 10–12, but the fit depends heavily on the fabric and the silhouette, so let me break it all down properly.

I came across Baserange a few years ago when a Copenhagen-based friend turned up wearing the most perfectly draped organic cotton trousers I'd ever seen. I asked where they were from, immediately went online, ordered a size I thought was right — and had to return them. The second attempt, armed with actual measurements, was a revelation. They've been a wardrobe staple ever since.

What Is Baserange?

For the uninitiated: Baserange is a Copenhagen-founded, Paris-based label built around sustainable, body-conscious basics. Think organic cotton jersey, naturally dyed fabrics, and silhouettes that sit somewhere between yoga wear and gallery-opening attire. They are uncompromisingly minimal — no logos, no trends, just really considered clothes that feel extraordinary against your skin. The brand has a loyal, somewhat cult following among the fashion-quiet-luxury crowd, and for good reason.

The price point sits firmly in the premium-to-designer bracket, which makes getting your size right first time even more important. Returns are possible but the process isn't as slick as your ASOS experience, so measure first, order once.

The Baserange Size System Explained

Here's where it gets interesting. Baserange uses a numeric sizing scale that runs from 00 (the smallest) through to 4 (the largest currently offered). These numbers don't map directly onto EU, UK or US sizing — they're the brand's own internal system. Here's a general guide:

Baserange SizeUK Size (approx)EU Size (approx)US Size (approx)Bust (cm)Waist (cm)Hip (cm)00634280–8362–6586–890836484–8766–6990–93110–1238–406–888–9370–7594–99212–1440–428–1094–9976–81100–105314–1642–4410–12100–10782–89106–113416–1844–4612–14108–11590–97114–121

The table above is a solid starting point, but always cross-reference with Baserange's own garment measurements on their product pages. Because the brand works extensively in natural and organic fabrics — many of which have some stretch or drape — the same numeric size can feel quite different across product categories.

Does Baserange Run True to Size?

Mostly, yes — but with important caveats. The jersey pieces (bodysuits, leggings, the classic tube tops) are designed to fit close to the body, and the fabric has enough stretch that you can generally go by your measurements comfortably. The woven pieces — trousers, shirts, outerwear — run closer to standard sizing but tend to have a relaxed, slightly oversized cut, so if you're between sizes in those styles, sizing down often gives a cleaner line.

A few specific observations worth knowing:

The jersey bodysuits and jumpsuits are stretchy but designed to be fitted — go by your hip measurement first, as that's where most people find them tight.
The woven trousers have a generous cut. If you want a tailored look rather than a relaxed one, consider sizing down one.
The dresses vary enormously by style — some are draped and forgiving, others are body-skimming. Check the product description carefully.
Natural dye fabrics can shrink slightly on first wash — cold wash and air dry is always worth following for Baserange pieces.

How to Measure Yourself for Baserange

Given how much Baserange's sizing relies on actual body measurements rather than assumptions about what a "12" means, it's worth taking five minutes to measure properly before you order. You'll need a soft tape measure:

Bust: Measure around the fullest part of your chest, keeping the tape parallel to the floor.
Waist: Measure around your natural waist — the narrowest point, usually a couple of inches above your belly button.
Hips: Measure around the fullest part of your hips and seat, usually about 20cm below the natural waist.

Once you have those three numbers, you can map them against the table above with confidence. And honestly? This approach works for basically every brand, not just Baserange — which is exactly what Tellar is built around (more on that in a moment).

Similar Brands Worth Knowing

If you love the Baserange aesthetic — minimal, sustainable, premium basics — there are some great alternatives at different price points worth building into your wardrobe:

The White Company — Brilliant for everyday soft basics in natural fabrics; the jersey and linen pieces in particular are a lovely, more accessible alternative.
Cos — The Baserange gateway drug, honestly. Architectural cuts, minimal branding, much more accessible pricing. The jersey basics are reliably good.
Anthropologie — For a slightly more textured, artisan-inflected take on the same quiet aesthetic. Better for dresses and knitwear than basics.
Hush — Excellent for relaxed, body-conscious jersey pieces at mid-market prices. The lounge-to-life crossover is very Baserange in spirit.
Lululemon — If you're eyeing Baserange's athletic-leaning pieces, Lululemon's technically superior fabrics are worth comparing.
Urban Outfitters — More trend-led than Baserange but does a good line in relaxed jersey and organic cotton basics at a much lower price point.
All Saints — For the more structured, pared-back side of the Baserange wardrobe — particularly good for minimalist outerwear.

For two genuinely independent picks: Asket (Swedish slow-fashion brand with precise, measurement-based sizing across a beautiful range of basics — effectively Baserange's most direct spiritual sibling) and Filippa K (Swedish minimalism with excellent natural fabrics and thoughtful sizing — a perennial fashion editor favourite that far fewer people know about than should).

My Final Verdict on Baserange Sizing

Don't be put off by the unfamiliar number system — it's actually one of the more honest sizing approaches out there, precisely because it forces you to think in measurements rather than vanity numbers. Once you've placed one successful order, you'll know your Baserange size for life, and that knowledge is genuinely liberating. The clothes are worth the effort. Just measure first.

Take the Guesswork Out of Baserange Sizing — Use Tellar

Baserange's numeric system is just one example of how wildly brands can differ in their sizing logic. Tellar.co.uk is the UK's leading free sizing tool — instantly matching your body measurements to 1,500+ brands, so you always know your size before you order. No subscriptions, no downloads, completely free.

Measure once — your bust, waist and hips (or use an existing size from a brand you know fits).
Use the Store Size Lookup tool to get your exact size across any brand — from Baserange and COS to Reiss and Arket.
Always free — works in your browser, no sign-up required.

The Tellar Fashion Hub is also home to hundreds of free, honest, unsponsored style guides from our stylists — covering brand sizing, outfit formulas, trend edits and more. Independent. Unbiased. Always free.

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