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Find answers to common questions about size conversion and measurement.
Visit Help Center →Learn how to measure yourself accurately for the best size conversion results.
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Send Feedback →Find answers to common questions about our size conversion tools and services.
How accurate are your size conversions?
Our conversions are based on official brand size charts and international standards (ISO, ASTM, and regional standards). We regularly update our database to reflect the latest brand sizing information. However, we always recommend checking the specific brand's size guide when making a purchase, as sizing can vary between different product lines and styles.
Can I request a new brand or size system?
Yes! We're constantly expanding our database with new brands and size systems. If you'd like us to add a specific brand or size conversion, please send us your suggestions via email. We'll review your request and consider adding it to our database in future updates.
How do I report an error in the conversion?
If you find any errors in our size conversions, please contact us with specific details including: the brand, product type, size system, and the discrepancy you've noticed. We'll investigate and correct any verified errors promptly. Your feedback helps us maintain accuracy for all users.
Do you support children's size conversions?
Yes! We offer dedicated tools for kids' sizes, including our Kids Shoe Size Converter andKids Clothing Size Converter. These tools include age references and measurement-based recommendations to help you find the right size for children.
How do I measure myself accurately for size conversion?
We provide comprehensive measurement guides to help you measure yourself accurately at home. Check out our Shoe Size Measurement Guide,Body Measurement Guide, andBra Size Measurement Guide for step-by-step instructions.
Are Nike and Adidas shoe sizes the same?
No, different brands have different sizing standards. For example, Nike and Adidas may have slight variations in their sizing. Use our Brand Shoe Size Converter to compare sizes across Nike, Adidas, New Balance, Converse, Vans, and other major brands to find the best fit.
How do I convert between men's and women's shoe sizes?
Use our Men's to Women's Shoe Size Converter for accurate conversions. Generally, women's sizes are about 1.5 sizes larger than men's (e.g., a men's US 9 is approximately a women's US 10.5), but our tool provides precise conversions based on official standards.
Is SizeFit free to use?
Yes! All our size conversion tools and measurement guides are completely free to use. There's no registration required, no hidden fees, and no limits on how many conversions you can perform. We're committed to providing free, accurate size conversion tools for everyone.
Can I use SizeFit for commercial purposes?
SizeFit is designed for personal use to help individuals find the right size when shopping. If you're interested in using our tools or data for commercial purposes, please contact us to discuss licensing options.
Explore Our Size Conversion Tools
Try our free size converters to find the perfect fit for shoes, clothing, bras, rings, and more.