Brand size calculator
Gap Size Calculator
Estimate your Gap size using measurement-based rows and nearby size options. Choose a garment type, region and fit category, then enter your measurements for a closest-size estimate.
Gap size calculator
This Gap size calculator is preselected to Gap. Enter the measurements you have to compare against the workbook size ranges.
Your measurements
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Loading spreadsheet size data...
The calculator is loading the workbook-derived rows for brands, garment types and UK, US and EU size systems.
SizeWise is independent and not affiliated with the listed brands unless stated otherwise. Recommendations are estimates, not guarantees.
How the Gap size estimate works
SizeWise filters the workbook rows to Gap, then narrows results by fit category, garment type, region and fit type. The calculator scores your measurements against available ranges and shows a closest size with nearby alternatives when sizes are close.
Supported Gap categories
Gap is listed as USA in the workbook. Size recommendations are estimates and should be checked against product-level measurements where available.
Gap size calculator FAQ
Quick answers for using this independent Gap size guide.
How do I estimate my Gap size?
Measure the body areas that matter for the garment, such as bust or chest, waist, hips, inseam or foot length. Then use this Gap size calculator to compare those measurements with workbook size ranges.
Is this an official Gap size calculator?
No. SizeWise is independent and is not affiliated with Gap unless stated otherwise. Results are measurement-based estimates, not guarantees.
Can I convert Gap sizes between UK, US and EU labels?
Yes. Where the workbook includes regional labels, the calculator can compare Gap UK, US, EU and international size systems for supported garment categories.
Will this guarantee the right Gap size?
No. The calculator gives a closest-size estimate. Product cuts, fabrics and product-level measurements can vary, so check the specific item before buying.
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