Answers, without the guesswork.

Astrid helps you find your jean size in any brand. Instead of guessing from a size label, we compare real measurements (waist, hip, rise and inseam) across brands, so you know what to order before you buy.

A brand's chart only covers that brand, and most only list body measurements, meaning who a size is supposed to fit. Astrid puts brands side by side and adds measurements of the jeans themselves, plus fit notes from women who own them.

No. Astrid doesn't guess your style or tell you what to wear. We show real numbers and where they came from, and you decide.

No. We're an independent sizing guide. When you find a pair you like, we link you to the brand's site to buy it.

No brand owns or pays for Astrid's sizing results. As more brands go live, some links to brand sites may earn us a small commission, at no cost to you. That never affects which sizes or brands we show you.

Yes, it's free to join. Some features may become part of a paid membership later, and we'll always tell you before anything changes.

We add a new brand every week. Everyone who signs up gets an email when a new brand goes live.

Use a soft tape measure. For your waist, measure the narrowest part of your torso. For your hip, measure the fullest part of your hips and seat. Keep the tape level and snug, not tight. Measuring over thin clothing or bare skin works best.

Yes. Switch between inches and centimeters anytime.

Tell us where you like your jeans to sit: at your waist, a little lower, or low on your hips. Low-rise and baggy styles often need 1–2 sizes up, so Astrid shows that size next to your fitted size.

We'll tell you. Instead of picking one for you, Astrid shows both sizes and which measurements land where, so you can decide whether you'd rather size up or down.

We start with what each brand publishes, and label every number with where it came from. As women measure the jeans they own, those measurements check the brand's numbers. Once enough agree, they replace them.

Yes. Astrid matches your actual measurements, not a standard body shape. We also note which styles brands make in curvy, petite, and tall versions.

We're starting with popular women's denim brands and adding more based on what members tell us.

Tell us when you sign up by adding jeans you own from that brand. The brands members list most get added first.

For now. We're starting with women's denim, then expanding to all pants, then more clothing.

For now, yes. Men's sizing may come later.

Only you. Your measurements are saved to your account and never shown to anyone.

Your fit details, combined with everyone else's and never shown individually, help us learn how each brand really fits, so the sizes we show are more accurate for every member.

Yes, anytime. Deleting your account removes your measurements and everything you've saved.