How to Measure Yourself for Sewing Patterns: A Complete Guide
Why Accurate Body Measurements Matter for Sewing
Here is the truth about sewing patterns: the fit is only as good as the measurements you put in. If your measurements are accurate, the pattern will fit your body. If they are off by even half an inch, you will notice it in the finished garment.
The good news? Taking accurate body measurements is not hard. It takes about five minutes, and you only need to do it once. After that, your measurements are saved to your People's Patterns profile and every future pattern you generate will use them automatically.
People's Patterns uses parametric drafting to generate your patterns. That means the system runs the same math taught in fashion design schools, but it uses your exact numbers instead of a standard size chart. Accurate measurements in, accurate pattern out. It really is that straightforward.
What You Need Before You Start
- A flexible tape measure - the soft kind used for sewing, not a metal hardware tape
- A mirror or a friend - some measurements (like shoulder width) are much easier with a second pair of eyes
- Fitted underwear or a leotard - do not measure over regular clothes, because the extra fabric adds bulk and throws off your numbers
- Something to write with - or just enter your measurements directly into your People's Patterns profile as you go
Step-by-Step Body Measurements for Sewing Patterns
Below are the key measurements that People's Patterns uses to generate your custom sewing patterns. Take your time with each one and measure twice to make sure both readings match.
How to Measure Your Bust or Chest
Wrap the tape measure around the fullest part of your bust or chest, passing it under your arms and keeping it level all the way around your body. The tape should be snug but not tight. You should be able to slide a finger underneath it comfortably.
A common mistake here is pulling the tape too tight or letting it ride up in the back. Use a mirror to check that the tape is level from front to back. And note: this measurement is your actual body measurement, not your bra size or the size printed on a shirt tag.
How to Measure Your Waist
Your natural waist is not necessarily where your jeans sit. To find it, bend sideways. The crease that forms on your side is your natural waistline. Stand back up straight and wrap the tape around that point, keeping it level and comfortably snug.
If you are not sure you found the right spot, tie a piece of elastic or string around your midsection and move around for a minute. It will naturally settle into your waist.
How to Measure Your Hips
Stand with your feet together and wrap the tape around the widest part of your hips and seat. For most people, this is about 7 to 9 inches below the natural waist. Keep the tape level and do not pull it tight.
If you are not sure where the widest point is, measure in a few different spots and use the largest number. The pattern engine adds ease (extra room for movement) on top of this measurement, so you want the true widest point.
How to Measure Your Rise (Crotch Depth)
This one trips people up, but it is simpler than it sounds. Sit down on a firm, flat chair. Measure from your natural waist straight down the side of your body to the surface of the chair seat. That distance is your rise.
Rise determines how much room there is between the waistband and the crotch seam on pants and shorts. If this measurement is off, the crotch will either hang too low or feel too tight. Take an extra moment to get it right.
How to Measure Your Inseam
Stand up straight and have someone measure from your crotch point down to the floor along the inside of your leg. If you do not have a helper, you can measure a pair of pants that fits you well from the crotch seam down to the hem.
Your inseam determines the length of your pants, shorts, and other bottoms. People's Patterns lets you adjust the finished length when you configure your pattern, but starting with an accurate inseam gives the system the right baseline.
How to Measure Your Shoulder Width
Feel for the bony point at the top of each shoulder. Measure from one shoulder point to the other, going across the back. The tape should follow a slight curve along the natural line of your shoulders rather than pulling tight in a straight line.
This measurement is much easier with a friend. If you are measuring yourself, stand with your back to a mirror and look over your shoulder to check the tape placement.
How to Measure Your Sleeve Length
Start at the bony point of your shoulder (the same spot you used for shoulder width). Bend your elbow to roughly 90 degrees, then measure from the shoulder point down the outside of your arm, around the elbow, and down to your wrist bone.
The reason you bend your elbow is that a straight-arm measurement will give you a sleeve that feels too short when you actually move your arms. The slight bend accounts for that extra fabric you need.
Tips for Getting Accurate Sewing Measurements Every Time
- Measure twice. If both readings match, you are good. If they do not match, measure a third time and go with the number that came up twice.
- Stand relaxed. Do not suck in your stomach, hold your breath, or flex. Your pattern should fit the body you actually live in.
- Keep the tape level. Use a mirror to confirm the tape is not riding up or drooping in the back.
- Write it down immediately. Or better yet, enter each measurement directly into your People's Patterns profile as you take it. That way nothing gets lost or mixed up.
- Save your profile. Once your measurements are saved, you will not need to re-measure for future patterns. The system remembers everything.
Do I Need to Pick a Size After Measuring?
No. This is one of the biggest differences between People's Patterns and traditional sewing patterns.
With a standard commercial pattern, you compare your measurements to a size chart, pick the closest size, and then make alterations if your body does not match the proportions of that size. That process can take hours and still leave you with a pattern that does not fit quite right.
With People's Patterns, there are no sizes. If your bust measures 38.5 inches, the pattern is drafted for exactly 38.5 inches. If your hips measure 42 inches, the pattern accounts for exactly 42 inches. The engine adds the appropriate amount of ease based on the fit style you choose (slim, regular, or relaxed), and you get a pattern that is made for your body. No rounding. No grading between sizes. No alterations.
Your first pattern download is free with a free account, and no credit card is required. See pricing details here.
What Happens After I Enter My Measurements?
Once your measurements are saved, you pick a garment from the pattern catalog, choose your style options (fit, pockets, closure type, length), and the engine generates your custom pattern in minutes. Every pattern includes a print-ready tiled PDF, a materials list, and step-by-step construction instructions.
We always recommend cutting a muslin first. A muslin is a test version of the garment sewn from inexpensive fabric. It lets you check the fit before cutting into your good material. This is standard practice even with professionally hand-drafted patterns, and it is the single best thing you can do to make sure your finished garment turns out great.
Once you are happy with the fit, you are ready to print and assemble your pattern. Read our complete guide to printing and assembling tiled PDF patterns here.
Frequently Asked Questions About Sewing Measurements
How often should I re-measure myself?
Whenever your body changes noticeably, or as a general check every 6 to 12 months. If your measurements do change, just update your People's Patterns profile. You can re-generate any previously purchased pattern with your new measurements at no extra charge.
Can someone else measure me?
Absolutely, and it often gives more accurate results. A second person can make sure the tape is level in places you cannot easily see, like across your back for the shoulder width measurement.
What if I measured something wrong and my pattern does not fit?
That is exactly what a muslin is for. If the test garment reveals a fit issue, update the measurement in question, re-generate the pattern (free of charge), and sew another quick muslin to confirm. You can also use the fit feedback system in your account to track what worked and what needs adjustment.
Should I measure over my clothes or without them?
Measure over fitted underwear or a leotard only. Regular clothing adds bulk that will throw off your numbers. Even a thin t-shirt can add half an inch to your bust or waist measurement, which is enough to affect the fit of your finished garment.