Pessary Size Calculator — Find Your Right Size in 30 Seconds
Pessary Size Calculator
Get a recommended starting size in 30 seconds. Based on real fitting data from 1,800+ US patients.
EVIDENCE-BASED
Built from real fitting data — not guesswork
SciMed's calculator uses actual size distribution data from 1,800+ US patients (2022–2026). Size 4 fits 27.5% of women; sizes 3–5 cover 66.5%. This tool combines that data with your body characteristics to give a data-driven starting recommendation.
Your recommendation:
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Not sure between two sizes? Always start with the smaller. A slightly too-small pessary that falls out is safer than a too-large one that can cause UTIs or urinary retention. If it slips, size up.
Medical disclaimer: This calculator provides an evidence-based starting-size estimate based on population data. It is not a substitute for professional pessary fitting by a qualified OB-GYN, urogynecologist, or pelvic floor specialist. If your symptoms are severe, if you have unusual anatomy, if you've had prior pelvic surgery, or if you experience pain during pessary use, please consult your provider. SciMed offers 30-day size exchange on unopened, unused products — email store@scimedstore.com.
The data behind this calculator
- Size 4 fits 27.5% of US ring pessary patients (most common single size)
- Sizes 3-5 combined fit 66.5% of all fittings
- Sizes 2-6 combined cover 86% of fittings
- Return rate for direct-buy: under 0.3% (only 3 refunds across ~1,480 US patients)
- Based on: SciMed Store patient fitting data, 2022-2026
Full methodology: What 1,800+ Real Pessary Fittings Tell Us About Sizing
Complete pessary content library
Shop All Ring Pessaries$49.99+
3-Size Fitting Pack$129.99
Ring With Support$49.99
Ring Without Support$49.99