About SizeFit
Welcome to SizeFit, your trusted source for accurate size conversions and measurement guides. We're dedicated to simplifying the confusing world of international sizing standards, making online shopping easier and more reliable for everyone.
Founded in 2025, SizeFit was created to solve a common problem: the frustration of finding the right size when shopping across different countries and brands. Whether you're buying shoes from a US brand, clothing from a European retailer, or accessories from an Asian marketplace, our comprehensive conversion tools help you find the perfect fit every time.
What We Offer
Comprehensive Size Converters
Our platform offers specialized converters for multiple product categories:
- • Shoe Size Converter - Convert between US, UK, EU, Japanese, and CM measurements for men's, women's, and kids' shoes
- • Clothing Size Converter - Transform clothing sizes across US, UK, EU, and Asian standards
- • Bra Size Calculator - Calculate your perfect bra size with measurement-based recommendations
- • Ring Size Converter - Convert ring sizes between US, UK, EU, and Japanese standards
- • Hat Size Converter - Find your hat size across different international standards
- • Top Size Converter - Match body measurements to perfect top sizes
- • Mattress Size Converter - Compare mattress sizes across US, UK, EU, and other regions
Brand-Specific Size Charts
We understand that different brands have different sizing standards. That's why we provide:
- • Brand Shoe Size Comparison - Compare sizes across Nike, Adidas, New Balance, Converse, Vans, and more
- • Official brand size charts based on manufacturer specifications
- • Kids size conversion tools with age and measurement references
- • Men's to women's shoe size conversion for cross-gender shopping
- • Printable measurement tools like our Printable Ring Sizer
Accuracy & Reliability
At SizeFit, accuracy is our top priority. Our size conversion data is based on:
- ✓Official Brand Size Charts: We reference official sizing information from major brands including Nike, Adidas, New Balance, Converse, Vans, and many others.
- ✓International Standards: Our conversions follow recognized international sizing standards (ISO, ASTM, and regional standards).
- ✓Regular Updates: We continuously update our database to reflect the latest brand sizing information and user feedback.
- ✓Measurement-Based Calculations: Our tools use actual body measurements (chest, waist, hips, foot length) for the most accurate size recommendations.
While we strive for accuracy, we always recommend checking the specific brand's size guide when making a purchase, as sizing can vary between different product lines and styles.
Comprehensive Measurement Guides
Beyond size conversion, we provide detailed measurement guides to help you measure yourself accurately at home:
How to Measure Shoe Size
Step-by-step guide to measure your foot length and width accurately at home.
Body Measurement Guide
Learn how to measure your chest, waist, hips, and other body measurements for perfect clothing fit.
Bra Size Measurement
Complete guide to measuring your bra size for the perfect fit and support.
Size Charts Library
Browse our comprehensive collection of size charts for shoes, clothing, bras, rings, and more.
Our Mission
SizeFit was born from a simple idea: everyone deserves to find the perfect fit, regardless of where they shop or what sizing system they encounter. In today's global marketplace, shopping across borders has become the norm, but navigating different sizing standards shouldn't be a barrier.
We're committed to:
- Providing free, accurate, and easy-to-use size conversion tools for everyone
- Supporting international shoppers by bridging the gap between different sizing systems
- Offering comprehensive measurement guides to help users measure themselves accurately
- Maintaining up-to-date brand size information to reflect real-world sizing variations
- Creating a user-friendly experience that makes size conversion quick and intuitive
Why Choose SizeFit?
Global Coverage
Support for US, UK, EU, Asian, and other international sizing standards. Convert between any combination of systems instantly.
Accurate Conversions
Based on official brand size charts and international standards. We prioritize accuracy to help you find the perfect fit.
Fast & Free
All our tools are completely free to use, with no registration required. Get instant conversions in seconds.
Get in Touch
Have questions, feedback, or suggestions? We'd love to hear from you! Visit our contact page to reach out, or explore our measurement guides for detailed instructions on how to measure yourself accurately.
Thank you for choosing SizeFit. We hope our tools help you find the perfect fit every time you shop!