Mapping measurements is how to avoid being caught out by size charts and successfully fit a knitting pattern. Whether you’re a designer or knitter, this technique is the first thing you should do when either working from a size chart for the first time, or choosing a pattern from a designer for the first time. This moves you away from both the calculator and frustrating body shape categories. Mapping introduces the liberating concept that garments are just maths built on a grid, whether drawn with lines (sewing patterns) or squares (knitting patterns), and our skeleton is the architecture (both).
Why Standard Clothing Sizes and Body Shapes Fail Us
Different companies — whether sewing pattern, yarn, RTW, or indie designer — draft for different proportions based on historical data and modern sedentary lifestyles. Relying purely on standardized size brackets or generic body shapes (like triangles or rectangles) is limiting and frustrating. The variety in size and shape we now have means that instead of one industry standard or benchmark, there are several. And this means that you have options when it comes to choosing a size chart (if you’re a designer) or a knitting pattern (if you’re a knitter).
Hand-knitting pattern designers also draft using different sizing standards and assumptions regarding ease. This is why a “Size Medium” from one designer can fit entirely differently than a “Size Medium” from another. Some designers will be clear about the body types or shapes their size chart accommodates, and do at least one of two things: provide literature that makes this explicit, or include a schematic with the pattern.
The Importance Of Researching Size Charts
From a designer’s perspective, this involves due diligence and primary research. In our time, sizing resources from the apparel industry often (but not always) capture the impact of 21st-century posture changes. Things like forward shoulders and rounded backs from desk work, heavy bags, and spending more time sitting down than our ancestors did have precipitated major changes across the board, not just knitwear design. A traditional, perfectly symmetrical raglan or drop-shoulder might pull backward on a modern body; professional design requires accounting for these physical realities. You have a choice of accommodating them or drafting for an ideal posture only. When you source a size chart, this information is unlikely to be available to you upfront. There are two ways to find out. Ask whoever produced it, or make up some toiles/muslins based on the dimensions captured in the chart.
Flat pattern cutting relies on landmarks (Bust Line, Centre Front, Side Seams, etc.) arranged on a 90-degree grid layout. This allows everyone involved with the pattern — designer and maker — to create a map. The pattern is the site of this mapping exercise. As knitters, we’re not used to seeing the entire pattern drawn out on squared paper, but having visual information can be powerful and transformative. You don’t have to draw out everything line by line, square by square. (But you definitely should if you think it’ll help you!) The schematic has already done that for you. This is why designers should include one — and knitters should look for one.
The Knitting Schematic: Your Blueprint and Garment Grid
A knitting pattern’s schematic is the closest you get to the grid and seeing the fully scaled pattern in situ. By mapping your own skeletal landmarks (like nape-to-waist or shoulder line) against the schematic’s measurements, you can pinpoint exactly where a garment needs modifications before casting on. If you have a set of your own body measurements, you have all the data you need to do this.
Annotate every dimension on the schematic with your corresponding body measurements. If the schematic has a shoulder-to-shoulder measurement, check which size most closely matches yours. Regardless of how close it is, note whether it is more or less than the closest size, or exact. Keep going until you could draw a schematic of your own with your body measurements, and put it side to side with the one for the pattern in question. This will give you an overview of how well it is likely to fit and the scope of the alterations you’ll need to make (if any).
The Designer Creates the Map AND Demonstrates How To Navigate It
The pros are the ones who both create the map and demonstrate how to navigate it. Stitch gauge (stitches per cm/inch) and row gauge (rows per cm/inch) act as the Cartesian coordinate system for knitwear. Every landmark alteration translates to calculating how many stitches to add/subtract or how many rows to knit before shaping begins.
If you are working from a size chart and aren’t sure if there are any postural biases or body shape biases built into the data within, educate yourself on a range of the most common figure alterations people make nowadays. Make a list to keep beside you, study how these alterations are made in sewing patterns, and consider how to apply this knowledge to your own designs. You won’t be able to slash the pattern open, because knitted textiles are constructed and shaped simultaneously. BUT…you can observe what’s happening spatially. What shaping techniques could you use to get a similar result?
Fit a Knitting Pattern By Focusing on the Shoulders and the Upper Torso First
Begin by fitting the shoulders and back first because the skeleton supports the garment’s weight. Avoid picking size extremes if your measurements span multiple brackets. Select your base size according to a range of measurements in their upper torso area. Don’t pick just the full bust or even the high bust. It is much easier to make a series of minor modifications than one major one. The idea is to get as close as possible to all the measurements, rather than nailing one or two and having to do major adjustments elsewhere. You’re picking a starting point or landing spot that puts you within reach of all coordinates on the map.
This is where professional designers who dug into their size chart earlier on really reap the benefits of their research. All the questions asked, testing, and toile making will have been worth it. The size chart is the foundation of everything you’ll ever design. This emphasises the importance of grading from a structurally sound upper torso; peace of mind for every design henceforth. And this deep knowledge of how your size chart works, in terms of both shape and size, means you can support your knitters. You’ll be able to teach them how to guide their own customers on choosing a size based on skeletal frame width, then building multi-size instructions that accommodate natural variations.
Designing for Alterations: Hiding Modifications in the Geometry
The best fit modifications always use existing styling details (like princess seams, yokes, waist seams, or gathers) to incorporate alterations smoothly without destroying the pattern’s beauty and geometry.
If you’re a knitter, you can get creative about applying fit and shape modifications if the pattern doesn’t guide you. If you’re a designer, this is highly relevant to you. You can write patterns where alterations are intuitive by building them in from the get-go. When you’re working through a design idea, sketching and swatching, long before you get the calculator out, think about where and how figure alterations could be made. This is why I encouraged you to make a list of common ones earlier on. It’s handy to have it beside you at this stage in the design process! Existing design lines are always the first clue, if not the complete answer staring you in the face.
For example, horizontal bust darts can be seamlessly hidden using short rows. Waist shaping can be cleanly integrated into vertical texture patterns or ribbing transitions. If designing a sweater with complex cabling, have some negative space or plain stockinette stitch at the side seams. This means that knitters can easily adjust the width without disrupting the main cable design geometry.
You don’t have to bin certain design ideas if a particular shape or alteration can’t be accommodated. It means that you need to be clear and upfront about what’s possible. Let the knitter make an informed decision with the confidence — and evidence — that you’ve anticipated their needs, so that they can trust you. Focus on body shape once it has been revealed by mapping body measurements.
Conclusion: Create Your Own Map
Mapping allows you to triangulate meaning from written and numerical data. It gives us knitters the visuals we so desperately need. Visuals, words, and numbers — that’s the triangle. The power of working with a constructed textile like knit is that it can be engineered exactly as you want it, but this doesn’t have to be a drawback at the same time. This is why we have schematics, but they needn’t be the only visual we create. If it helps you to draw particular areas of the pattern out on squared paper in addition, go for it. Whether you’re a designer or a knitter, mapping is the key. Create the map you need to guide you through the garment.