Paired body seams
Shoulder difference: 0.0 mm. Side-seam difference: 0.0 mm.
Free coordinated woven-shirt pattern
Create a basic relaxed shirt pattern from your measurements
Build the main shirt and its finishing pieces in one calculation. The sleeve follows the generated armholes, the collar stand follows the complete neckline, the collar follows the stand, and the pleated sleeve hem is checked against the cuff.
Sew a complete toile before final fabric
The report verifies the paper interfaces, not personal posture, shoulder balance, hand clearance, or fabric behaviour. Print at 100%, walk the solid sewing lines, and test the shirt in an inexpensive woven fabric of similar weight.
Default seven-piece shirt set
Measured proof
What the default 96 cm chest example produces
One connected draftThis example is generated by the same service used for downloads. It is not a decorative illustration: the numbers below are taken from the drawn sewing lines.
Inputs used
- Chest
- 96 cm
- Hips
- 102 cm
- Shirt length
- 72 cm
- Sleeve length
- 59 cm
- Bicep
- 32 cm
- Wrist
- 17 cm
- Chest ease
- 18 cm
A zero or near-zero difference means the intended paper seams agree within their stated tolerance. It does not mean the garment has already been fitted to a person.
Generate my shirt
Every value remains editable after choosing a preset.
Calculated interfaces
Cap solved to the armhole
Armhole 48.6 cm, sleeve cap 48.6 cm; difference 0.0 mm.
Neck and wrist are derived
The stand begins from the 42.0 cm drawn neckline; the cuff attachment is 21.0 cm before its button overlap.
Included pattern pieces
Front and back
Front cut as a mirrored pair and a clean back cut on the fold.
Long set-in sleeve
One asymmetric sleeve piece cut as a mirrored pair, with opening and pleat marks.
Plackets, stand, collar, and cuffs
Two front plackets plus matched neckline and wrist finishing pieces.
Related guides
Assembly map
Classic shirt project
See the order of work and how the separate shirt components relate. This new generator replaces most manual transfers with one coordinated draft.
MeasureBodice measurements
Review shoulder, armhole-depth, chest, and length landmarks before entering numbers.
ConstructionHow to sew a front placket
Follow a practical sequence for interfacing, folding, topstitching, buttonholes, and button placement.
Print and cutSeam and hem allowances
Understand the difference between the solid sewing line and the dashed cutting line before checking seam lengths.
Pattern details
Relaxed woven proportions
Chest and hem ease are explicit inputs. The front is cut as a mirrored pair for the opening, while the clean back is cut on the fold.
A cap calculated from this armhole
The generator measures the front and back armhole curves it drew, then solves the sleeve cap against their combined sewing length.
Stand and collar share one source
The complete neckline sets the stand attachment. The collar seam then takes the same usable stand length instead of an unrelated default.
Pleat intake is accounted for
The sleeve hem is wider than the cuff. The compatibility check removes the selected pleat intake before comparing the sleeve with the cuff attachment.
What this generator actually coordinates
A shirt is a system of interfaces, not seven independent rectangles
The useful part of an integrated shirt generator is not the number of pieces on the page. It is that each receiving piece starts with a value measured from the piece already drawn. The compatibility report exposes those relationships so a believable default cannot silently substitute for your shirt.
Choose ease for woven cloth
Body ease is added to the chest circumference and hem ease to the hip circumference. A crisp poplin overshirt may need more room than a soft viscose shirt. Compare finished circumferences with a woven shirt you can move in; do not borrow knit T-shirt ease.
The sleeve is solved after the body
Front and back armhole curves are measured along their solid sewing lines. The cap height is then solved until the complete sleeve-cap curve matches that target. Bicep ease still controls sleeve width, so extreme combinations should be rejected on the toile even when seam lengths agree.
Collar dimensions come from the neckline
Neckline width and front and back drops shape the body opening. Only after those curves exist does the generator calculate the stand attachment. The collar uses the stand's collar seam. The button overlap belongs beyond the attachment segment and is marked separately.
Wrist, ease, pleat, and overlap do different jobs
Wrist plus cuff ease defines the section that encircles the wrist. Pleat intake makes the unpleated sleeve hem wider and is removed before attachment. The button overlap extends the cuff beyond the attachment length; it must not be counted as extra sleeve width.
The front strip follows the opening
The front placket length is derived from the drawn centre-front opening between the neck edge and hem. It is a separate applied strip in this basic draft. The sleeve carries an opening line, but a separate tower-placket pattern is not included; use the linked component generator if that finish is required.
Know what is deliberately absent
This is a clean-back relaxed shirt without a separate yoke, bust dart, pocket, or shaped shirttail. Those choices affect fit and assembly and should not be implied by decorative lines. Add a tested pocket or sleeve placket only after the main toile is balanced.
Decisions before cutting
Use the checked geometry as a starting block, not a promise of finished fit
Matched sewing lengths prevent one important class of drafting error. A wearable shirt still depends on shoulder slope, posture, preferred layering, hand clearance, fabric weight, collar roll, and construction accuracy. The first sample is where those variables become visible.
Classic, overshirt, and longline change proportions
A preset changes ease, lower circumference, body length, placket width, and collar-point direction. It never changes the body measurements selected in the size row. Review every populated field rather than treating the preset name as a size.
A relaxed shirt can still have a wrong shoulder
The draft balances front and back shoulder seam lengths, but it cannot see forward shoulders or asymmetry. Mark the intended shoulder point on the toile and assess the sleeve hang with both arms relaxed.
Check reach and cuff passage together
Raise and reach both arms, then button the cuff and pass the hand through before finishing. Increase cuff opening or overlap only for a reason; changing wrist ease also changes the cuff seam that the sleeve pleat must meet.
Interfacing changes collars and plackets
Test interfacing on the actual cloth. Excess stiffness can make the stand push away from the neck, while insufficient support can collapse the collar and distort buttonholes even when the paper seams are exact.
Before cutting final cloth
A short verification sequence catches scale, transfer, interface, and fit problems while changes are still cheap.
- 01 Print at actual size and measure the 5 × 5 cm test square in both directions.
- 02 Walk the solid shoulder, side, armhole, neckline, stand, collar, sleeve-hem, and cuff sewing lines.
- 03 Transfer the sleeve-opening line, pleat legs, centre lines, fold lines, and stand-overlap mark.
- 04 Sew a complete toile in woven fabric with comparable weight and drape, including one collar and one cuff.
- 05 Test sitting, forward reach, arm lift, neck comfort, button overlap, hand passage, and hem level before final cutting.
From pattern to look
Plan the finished garment
Before you cut fabric, browse shirt ideas in Nastix Design and decide which silhouette and details you want to make.
How and when
Generated from application code
This generator converts the entered measurements into vector geometry. Where a construction has related seams, the software can calculate their lengths; preview, SVG, copyshop PDF, and tiled A4 PDF are produced from the same geometry. These software checks do not replace printing, sewing, or fitting a test sample.
Last recorded review of the generator implementation and documentation: 2026-10-16. The output has not been certified through physical production testing; verify measurements, print scale, seam relationships, fabric behaviour, and fit for your project.
Relaxed shirt questions
What to know before generating
Is this a complete shirt or a group of separate generators?
It is one coordinated draft. Front, back, sleeve, front placket, collar stand, collar, and cuff are calculated in the same service, and the preview reports the interfaces intended to join.
Does it include a back yoke?
No. This basic version has a one-piece back cut on the fold. It does not draw a decorative fake yoke. Split and test the back only if your design requires a real yoke and its construction benefits.
Is a sleeve placket piece included?
The sleeve includes an opening line and editable opening length. A separate tower-placket piece is not included in this export; use the linked sleeve-placket generator for that construction.
Why is the sleeve hem wider than the cuff?
The difference is the selected pleat intake. Fold the marked pleat before attaching the sleeve. The compatibility check subtracts that intake and compares the remaining sleeve edge with the cuff attachment length.
Are the collar and stand based on my neck circumference?
They are based on the actual front and back neckline curves generated from neckline width and drop. This is more reliable than using an independent collar default, but neck comfort still needs a toile.
Which fabric should I use?
Use a woven fabric such as shirting poplin, chambray, linen blend, lightweight denim, or viscose twill. Choose ease and interfacing for the exact weight, drape, and intended layering.
Are seam and hem allowances included?
Yes. Solid lines are base sewing lines and dashed outlines are cutting lines. The selected seam allowance applies to seams; the body hem uses the separate hem allowance.
How should I print the A4 file?
Print at 100% or actual size with fit-to-page disabled. Measure the 5 × 5 cm square before assembling tiles, and confirm both horizontal and vertical scale.