Free T-Shirt Sewing Pattern: The Complete Made-to-Measure Guide

A perfectly fitted T-shirt is the hardest garment to get right from a standard pattern — and the most worn piece in any wardrobe. Here's why custom-drafted beats off-the-shelf every time, and how to generate yours in under two minutes.

Why Standard T-Shirt Patterns Fail Most Bodies

Pick up any commercial T-shirt pattern and you'll notice the sizing is based on a single "average" body type. Broad shoulders with a smaller chest? Narrow waist but fuller hips? The pattern wasn't designed for you. The result: excess fabric pooling at the armhole, shirt riding up in the back, or a chest that looks painted on.

The real culprit is the armscye — the armhole curve. In a properly drafted pattern, it's calculated from your specific shoulder width, chest circumference, and armhole depth. In a standard pattern, it's the same for everyone in a given "size."

The Anatomy of a Great T-Shirt Pattern

• Front and Back Bodice: The side seam angle should follow your natural waist-to-hip ratio. A well-drafted pattern tapers at the waist and opens at the hip — not a straight tube.
• Sleeve Cap: This is the most technical piece. The sleeve cap height controls how much ease is built into the shoulder. Too high = restricted movement. Too low = sagging underarm.
• Neckline: A crew neck that fits properly sits 2–3 cm below the collar bone. Most commercial patterns place it too high or too low for people with non-standard neck circumferences.
• Seam Allowances: For knit fabrics like jersey, always work with a narrow seam allowance (7mm) and a zigzag or overlock stitch.

Choosing the Right Fabric

A T-shirt lives or dies by its fabric. The golden rule: minimum 50% stretch horizontally, and enough recovery to bounce back after washing. Here's a quick guide:

• Cotton Jersey (150–200 GSM): Classic, breathable, slightly boxy when sewn. Perfect for everyday T-shirts.
• Cotton/Lycra Blend: The gold standard for fitted tees. The 5–8% Lycra gives the fabric memory, so it holds its shape wash after wash.
• French Terry: Heavier and more textured. Great for oversized, slouchy silhouettes — not ideal for body-con fits.
• Bamboo Jersey: Ultra-soft, naturally antimicrobial, and luxuriously drapey. Higher price point but worth it for everyday basics.

Step-by-Step: Cutting and Sewing Your T-Shirt

1. Pre-wash your fabric. Jersey shrinks. Always wash and dry your fabric before cutting — the same way you'll care for the finished garment.
2. Cut on the fold. The front and back bodice pieces are symmetric. Fold the fabric, align the center line to the fold, and cut. This saves time and ensures perfect mirror symmetry.
3. Shoulder seams first. Sew the front to the back at the shoulders using a narrow zigzag or an overlock stitch. Press the seam toward the back.
4. Attach the neckband. Cut a strip of ribbing 80% of the neckline circumference. Fold in half, stretch slightly as you sew, and join with a zigzag. This creates the natural "hug" of a finished crewneck.
5. Set in the sleeves. Flat-set sleeves (before sewing the side seams) are far easier than set-in sleeves for beginners. Pin the sleeve cap to the armhole, right sides together, and sew.
6. Sew the side seams and sleeve seams in one pass. Start from the cuff, sew through the underarm, and up the side — all in one continuous seam. This is the standard industrial method.
7. Hem the bottom and cuffs. Fold up 2 cm, press, and topstitch with a twin needle for that professional double-stitch finish.

Why Generate Your T-Shirt Pattern on DraftMySize?

DraftMySize generates every pattern piece mathematically from your exact bust, waist, hip, shoulder width, and sleeve length measurements. The armscye is calculated to match your specific shoulder drop. The sleeve cap height is optimized for your arm circumference. You get a production-ready PDF in seconds — with seam allowances, grain lines, and a step-by-step assembly guide already included.

The T-shirt pattern is completely free — no account required to generate or download.

Frequently Asked Questions

Is the T-shirt pattern really free?

Yes — the T-shirt is one of 14 patterns that are permanently free on DraftMySize. No account, no credit card.

What size range does the T-shirt pattern cover?

The parametric engine generates patterns for any measurement set — from XS (bust 76cm) to 6XL (bust 152cm+). It's not size-based; it's measurement-based.

Can I use this pattern to sell T-shirts?

The free patterns include a personal use license. For commercial production, a commercial license is available in the studio settings.