Matched shoulders and sides
The front and back shoulder difference is 0.0 mm, and the side-seam difference is 0.0 mm. Both pairs are calculated from the same body geometry.
T-shirt pattern
Create a T-shirt sewing pattern from your measurements
Generate a free printable knit T-shirt pattern using your chest, hips, body length, shoulder, armhole, sleeve, and neckline measurements. Choose regular, relaxed, cropped, or oversized proportions and download the finished front, back, sleeve, and neckband as A4 PDF, copyshop PDF, or SVG.
Important fit note
Patterns generated by Nastix Patterns are calculated base drafts created from your measurements and selected settings.
We strongly recommend checking the 5 x 5 cm test square, making a test version, and verifying fit before cutting final fabric.
Knit stretch, fabric recovery, body shape, and preferred fit can change the result and may require manual adjustments.
T-shirt block preview
Real generated example
From knit measurements to a matched T-shirt pattern
Four coordinated piecesThis example uses the production generator to create front, back, sleeve, and neckband pieces from one measurement set. The image is the actual vector draft, not a stock T-shirt outline.
Measurements used
- Chest
- 92 cm
- Hips
- 98 cm
- Shirt length
- 64 cm
- Shoulder
- 12 cm
- Sleeve length
- 22 cm
- Bicep
- 31 cm
- Chest ease
- 10 cm
- Neckband width
- 3.5 cm
The same calculation matches the body seams, sleeve cap, armhole, and neckband before producing the downloadable files. Fabric stretch still needs to suit the selected ease and neckband ratio.
Generate your T-shirt
Choose a knit with suitable stretch, verify the test square, and sew a sample before final fabric.
Checks performed by the generator
Sleeve cap fitted to the armhole
The combined armhole is 43.5 cm and the generated sleeve cap is 43.5 cm, leaving a 0.0 mm difference before export.
Neckband calculated from the neckline
A 22.3 cm neckline at a 88% ratio produces a 19.6 cm finished neckband. The numerical difference from the target is 0.01 mm.
Files from this same geometry
Tiled A4 PDF
Full-size pages for front, back, sleeve, and neckband, prepared for 100% printing.
Full-size PDF
All coordinated pieces on a large-format sheet with allowances and construction marks.
SVG export
Editable garment geometry for plotting or design adjustments.
Related guides
Knit top
T-shirt measurements
Review chest, hips, shoulder, sleeve, knit ease, neckline, neckband, and armhole checks.
PiecesT-shirt pieces explained
Understand how front, back, sleeve, neckband, grainline, and allowances become a sewable T-shirt.
ConstructionSeam and hem allowances
Read solid seam lines, dashed cutting lines, construction seam allowance, hem allowance, curves, and corners.
Pattern details
Front, back, sleeve, and neckband
The draft includes separate body pieces, a sleeve piece, and a neckband matched to the selected neckline type.
Chest, hips, length, shoulder, sleeve
These values control body width, hem position, armhole placement, sleeve length, and the final knit fit.
Round or V-neck finish
Round necklines should curve smoothly; V-necks should meet in a clean point and still connect clearly to the shoulder.
Sleeve and neckband compatibility
Check sleeve cap to armhole length, front/back shoulder seams, neckband length, stretch direction, and hem allowance.
T-shirt pattern guide
A printable knit T-shirt pattern calculated from your measurements
The generator builds the body, sleeve, and neckband from one set of measurements, checks the sewing relationships, and adds the selected allowances. Use these notes to select fabric, enter reliable measurements, and print the pattern accurately.
Front, back, sleeve and neckband
The pattern contains front and back pieces cut on the fold, a complete sleeve piece cut twice, a neckband, seam and hem allowances, grainlines, and a 5 × 5 cm print test square.
Body, shoulder, armhole and sleeve controls
Chest and ease set upper-body width; hips and hem ease set the lower width. Shoulder, armhole depth, bicep, and sleeve length control how the sleeve joins the body and allows movement.
Regular, relaxed, cropped or oversized
Presets provide practical starting proportions. Every measurement remains editable, so the generated sewing pattern is recalculated instead of simply scaling a fixed standard size.
Matched body, sleeve and neckline seams
The draft checks front and back shoulder and side seams, sleeve-cap length against the complete armhole, both sleeve underarm seams, and the shortened neckband against the neckline.
Use stretch knit with good recovery
Cotton jersey, interlock, and similar knits are suitable starting points. Stretch and recovery affect body ease and neckband length, so test the neckline with the actual fabric.
A4 tiled PDF, copyshop PDF or SVG
Print at 100% with page scaling disabled and measure the test square first. Use tiled A4 for home printing, copyshop PDF for one full-size sheet, or SVG for vector editing.
Who, how, and when
Drafting logic by Nastix Design
This generator is maintained as application code: measurements are converted into vector geometry, related seams are measured numerically where the construction requires it, and the same geometry is used for preview, SVG, copyshop PDF, and tiled A4 PDF.
Generator content and output workflow reviewed 13 July 2026. A generated block remains a fitting starting point; verify measurements, print scale, fabric behaviour, and a test garment.
Common questions
Custom T-shirt pattern FAQ
Is the custom T-shirt sewing pattern free?
Yes. Enter your measurements, preview the generated pieces, and download the pattern as A4 PDF, copyshop PDF, or SVG without purchasing a standard-size pattern.
Does the generator use standard sizes or my measurements?
XS–XL presets provide starting values, but the final body, sleeve, armhole, and neckline geometry is recalculated from the measurements and options entered in the form.
Which fabrics work for this T-shirt pattern?
The draft is intended for knit fabrics such as cotton jersey or interlock. Check stretch percentage and recovery because they affect ease, neckline stability, and final fit.
How does the sleeve match the armhole?
The generator measures the complete front and back armhole curves and builds the sleeve cap toward that target length. It also checks the resulting seam-length difference before export.
How should I print the A4 T-shirt pattern?
Select actual size or 100%, disable fit-to-page scaling, and measure the 5 × 5 cm test square before trimming and joining the tiled pages.
Workflow
01
Choose a preset
Start with regular, relaxed, cropped, or oversized proportions.
02
Enter measurements
Adjust chest, hips, body length, shoulder, armhole, sleeve, and neckline.
03
Export for print
Download SVG, copyshop PDF, or A4 tiled PDF.