How To · Fashion · Smart-Casual
How to Taper Your Own Chinos
A good pair of chinos shouldn't cost extra money just to fit right. Learn to taper the legs yourself with basic sewing skills and minimal tools.
5 min read · IrisTapering chinos is one of the easiest alterations you can do yourself. The inseam is a straight line, which means there's minimal room for error—you're essentially sewing two parallel lines. If you can thread a needle and sew in a straight line, you can do this.
The key is measuring twice and cutting once. We'll walk you through finding your taper point, marking your new seam, and stitching it down. No sewing machine required, though one speeds things up considerably.
Tapering is one of the few alterations that looks professional even when done by hand.
Step one · 2 minutes
Try on and mark your taper point
Put on the chinos and have someone mark with chalk or a safety pin where the leg starts to feel too wide. This is typically 2–4 inches above the hem. Mark both legs at the same height. Take off the pants and measure the distance from the inseam to that mark on both legs—write it down. This is your reference point for the new seam.
Mark the inside leg only; marks on the outside are harder to hide if you make a mistake.
Step two · 1 minute
Measure the current inseam width
Lay the chinos flat on a table. Measure the width of the inseam at the calf—the distance from the inseam to the outer seam. Write this down. Now measure the width at the ankle. The difference between these two numbers tells you how much taper already exists. You'll use this to maintain proportion.
Measure at the widest part of the calf for accuracy, not at a random point.
Step three · 2 minutes
Draw your new inseam line
Lay one pant leg flat with the inseam facing up. Using your marks from steps one and two, lightly draw a new inseam line with chalk from your taper point down to the ankle. The line should taper gradually—not sharply—and end at a width that feels proportional to your ankle. Repeat on the other leg. Step back and check that both legs look symmetrical.
A gradual taper looks better than a sharp angle. Aim for a smooth curve rather than a hard corner.
Step four · 3 minutes
Stitch the new inseam
Thread your needle and tie a knot at the end. Starting at the taper point, stitch along your chalk line using a basic running stitch or backstitch. Keep your stitches small and even—about 1/8 inch apart. Work slowly and stay as close to the line as possible. When you reach the hem, tie off the thread securely. Repeat on the other leg.
A backstitch is stronger than a running stitch and more forgiving if you're new to sewing. Go slow; speed comes later.
Step five · 1 minute
Trim excess fabric
Once both seams are stitched, try on the chinos to make sure they fit. If they do, lay them flat and carefully trim the excess fabric from the old inseam, leaving about 1/2 inch of seam allowance. This prevents bulk and keeps the leg looking clean. You can zigzag stitch the raw edge if you have a machine, but it's not essential for chinos.
Don't trim until you've tried them on. It's easier to take in more than to let out.
Step six · 1 minute
Press and wear
Press the new seam flat with an iron on a low setting. This sets the stitch and removes any puckering. Once cool, the chinos are ready to wear. The seam should be invisible from the outside, and the taper should feel natural and proportional to your frame.
Use a pressing cloth between the iron and fabric to avoid shine marks on cotton or cotton-blend chinos.
How to know it works.
A successful taper should feel snug but not restrictive around the calf and ankle, and the seam should be nearly invisible from the outside. The taper should follow the natural line of your leg, not create a sharp angle.
Questions at the mirror.
What if I sew the seam crooked?
Unpick it carefully with a seam ripper or small scissors and try again. The fabric won't be damaged. This is why you don't trim excess fabric until you're sure the fit is right.
Can I taper chinos with a sewing machine?
Absolutely. Use a straight stitch and backstitch at the beginning and end to secure. A machine is faster and produces more consistent stitches, especially if you're tapering multiple pairs.
How much can I safely taper?
Taper gradually from your mark point to the ankle. Don't remove more than 1–1.5 inches total from the inseam width. More than that risks restricting your movement or making the fit look unnatural.
What thread color should I use?
Match the thread to your chinos as closely as possible. Neutral tones like tan, khaki, or gray work for most chinos. The thread will be hidden on the inside seam anyway.