FREE MERCHANT TOOL
Size chart CSV builder.
Turn your product measurements into a checked table. Convert centimeters and inches, then download the CSV for your next step. No account or Shopify connection required.
Try your own size chart.
Load a CSV, paste your measurements or start with an example. File contents stay in your browser and do not connect to Shopify. Reloading resets the preview. Examples are fictional; replace every value with your verified product measurements.
Example garment measurements. Define how your own chest and length measurements are taken.
Keep files under 20 KB. Choose the original measurement unit above before loading. An invalid file will leave your current chart in place.
Loading chart controls…
First column: Size. Add 1–8 measurement columns and up to 50 size rows. Use positive decimal numbers.
| Size | Chest | Length |
|---|---|---|
| S | 92 | 66 |
| M | 100 | 69 |
| L | 108 | 72 |
When you paste the exported CSV into Fit, select Centimeters as its original unit. The file contains measurements, not the chart title or product assignments.
Prepare the CSV.
Use Size as the first column. Add 1–8 measurement headings and 1–50 size rows. Keep labels unique and measurements positive, using a decimal point for fractional values. The file must be under 20 KB. This format describes a measurement table, not a Shopify product-import file.
Choose whether the source values are centimeters or inches before loading the file. The builder cannot determine a measurement’s unit from its number or column label. Keep one original unit throughout the table.
Check what the measurements describe.
A flat garment width is different from a full body circumference. Label the measurement clearly and use values you have verified for the actual products. The shirt, trouser and cushion-cover examples illustrate the format; they are not measurements for your inventory.
The builder checks the file’s structure and numeric limits. It cannot verify physical accuracy, recommend a size or tell you that a product will fit a shopper.
Convert and export.
One inch equals 2.54 centimeters. The preview derives each conversion from the original values and rounds displayed and exported measurements to two decimal places. Keep your original file if you need its full precision, and avoid repeatedly converting an already rounded export.
The download uses the units currently selected under “Preview and export units.” When you paste it into Fit, choose the same original unit. Chart titles, product assignments and measurement instructions are not included in the CSV; add those in Fit.
Your file stays on your device.
Loading a file reads it in this browser tab. There is no server upload, saved account or connection to your store. A rejected import leaves the current chart in place. Download the result before reloading or leaving if you want to keep your work.