Your crochet pattern. Sized XS to 5XL. In under 5 minutes.
Stop losing entire afternoons to sizing spreadsheets. Enter your gauge, pick your sizes, and walk away with every stitch count, ease value, yardage estimate, and written construction instructions — already done.
Most crochet designers spend 6–10 hours grading a single garment by hand. The Crochet Blueprint does it automatically, accurately, and in the time it takes to drink your coffee. This is what designing without the math feels like.
- 5 min
- Average time from gauge to full graded table
- 38 sizes
- Baby, Children's, Women's & Men's, all in one project
- 0
- Spreadsheets. Every stitch count calculated for you.
Baby through 5XL on paid tiers. Free tier covers Lovey through King blanket sizes.
Body measurements based on industry-standard sizing for women's, men's, and children's garments.
| Size | 2XS | XS | S | M | L | XL | 2XL |
|---|---|---|---|---|---|---|---|
| Body bust | 78 | 84 | 90 | 96 | 104 | 112 | 122 |
| + ease | +6 | +6 | +7 | +8 | +9 | +10 | +12 |
| = Finished | 84 | 90 | 97 | 104 | 113 | 122 | 134 |
| Stitches | 165 | 177 | 191 | 205 | 222 | 240 | 264 |
Meet the maker
I built this because I needed it.
I designed my first sized pattern in 2025 and spent 4 days on a spreadsheet just for the math. There had to be a better way. The Crochet Blueprint is what I built instead.
Jessica
Crochet designer · Civil engineer · Gerber Collective
What you get
Everything you need to size beautifully.
Ease that actually fits every size
Not a flat add across all sizes. The ease engine scales proportionally — less for XS, more for 5XL — across bust, hip, sleeve, and upper arm independently. Your size 2XL won't wear like a tent.
Change your gauge. Everything recalculates instantly.
Stitch counts, row counts, shaping intervals — all of it updates the moment your gauge changes. No more redoing the math from scratch because your swatch came out different.
From newborn to 5XL. Every size, every population.
38 sizes across baby, child, women, and men — built from industry-standard sizing. Design once, publish for everyone.
Tables a tech editor would be proud of.
Every stitch count, ease value, and finished measurement laid out in a clean, traceable table. Body → Ease → Finished → Stitches, per size. Show your math. Build trust.
No software experience required.
If you can fill in a gauge swatch, you can use this. Five steps to a publish-ready pattern, plus a built-in notes scratchpad. Nothing assumed.
Raglan, yoke, sleeve shaping — and more coming fast.
Top-down raglan and circular yoke construction are already built in. PDF export, AI assist, and additional construction methods are on the way.
The five fit profiles
Named the way designers name them.
Industry-standard ease ranges, baked into every project. Pick one and the entire size range recalculates.
Fitted
+1" to +1.5"
Close to the body with room to move.
Standard
+2" to +3"
Classic comfortable fit with clear shape.
Relaxed
+3" to +4"
Easy fit, no constriction, works for most crochet.
Boxy
+4" to +5"
Loose, square silhouette. Minimal shaping, maximum ease.
Oversized
+5" and above
Deliberately large. Draped, cozy, intentional volume.
A note on crochet: crochet fabric has limited stretch, so ease amounts should sit on the higher end of each range for most crochet garments.
From gauge swatch to sized pattern in three calm steps.
Set your gauge
Enter your stitch count, row count, hook size, and yarn weight. Metric or imperial — we convert on the fly. This is the only number that matters and it's the only one you supply.
Pick your sizes and fit profile
Choose your size range — a single size or all 38. Pick a fit profile from negative ease to oversized. The engine handles the rest. You don't touch another number.
Walk away with a publish-ready output
A complete graded table. A full ease reference. A grading walk-through your tech editor can audit. A schematic. Yardage estimates. And written construction instructions for every size — all generated in under 5 minutes.
Sound familiar?
You designed the pattern. You made the sample. Now you're staring at a spreadsheet trying to figure out how to get from your size M to a size XL without breaking the stitch multiple. You've redone the math three times. It's been four hours. You haven't even started writing the instructions yet.
That's the part we built this for.
The Crochet Blueprint takes the sample-size pattern you already have and grades it — automatically — to every size you want to sell. Stitch counts, ease, yardage, schematics, and written instructions. Done. Accurate. Traceable. Ready to hand to a tech editor or publish directly.
You design. We do the math.
Ease engine
The part of grading that trips everyone up — handled.
Ease isn't a flat number. A fitted XS and a fitted 5XL need different amounts of ease, and the relationship is different for bust, hip, sleeve, and upper arm. Most designers guess. The Blueprint calculates — proportionally, per measurement, per size, automatically.
- Separate formulas for circumference, width & vertical
- Bust, hip, upper arm and sleeve scale independently
- Switch fit profile and watch the entire range recalculate
Be first to know when new features drop.
No spam. Just pattern math updates from Gerber Collective.
What designers are saying
“I graded my first sweater in the time it used to take me just to set up my spreadsheet. I genuinely couldn't believe it was done.”
“The grading walk-through alone is worth it. My tech editor asked me what tool I used. That's never happened before.”
“I've been designing for three years and I didn't know ease was supposed to scale differently at each size. This changed how I think about fit entirely.”
You've spent enough afternoons on sizing math.
Start a project now. Free to start. No credit card.
Bring your gauge, your vision, and your size range. Walk away with everything else.
Free to start · No credit card · Your work autosaves