🩲 Women's Intimates Fitting and Try-On

Panty Size Calculator and Virtual Model Try-On

Calculate your exact panty size using natural waist and fullest hip measurements. Features instant US, UK, EU, and Japan size conversions and interactive female mannequin try-on visualizer.

Measurement Unit:

⚙️ Body Measurements

28.0 in

Measure around narrowest point of torso above belly button.

38.0 in

Measure around fullest part of hips & buttocks level with floor.

Try-On Style & Trim Customizer

💡 Pro Fitting Tip:

Panty sizing is primarily determined by your fullest hip circumference. If your waist and hip measurements suggest different sizes, prioritize your hip size for maximum comfort.

📊 Converted Panty Sizes Live Global Calculations

US Letter Size
Medium (M)
Numeric 6
US Dress / Pant
Size 38
Metric Standard
UK / AU Size
Size 40
UK / AU
EU / FR / JP Size
Size L
EU / FR / JP
Hip-to-Waist Ratio: 0.747
Best Fit Cut: Full Brief
Interactive Female Model Fitting Engine
Full Brief Fit Match
Size M (38")
Waistband Fullest Hip Line

📖 International Women's Panty Size Matrix Table

Hip (in) Hip (cm) Waist (in) US Letter US Pant Size UK / AU Size EU / FR / JP
⚡

Auto Screen Calibration

OnlineRulerAI auto-detects your screen PPI database (250+ devices) to display 100% 1:1 real-world dimensions instantly.

💳

Credit Card & Coin Fit

Match any standard credit card (85.60 mm), bank card, or coin against your display for pinpoint physical accuracy.

🎯

Visual Caliper & Guidelines

Drop reference guidelines, track cursor crosshairs, or drag rulers across screen edges in inches, cm, mm, and px.

Free Online Ruler — Measure in Inches, cm & mm at Actual Size

Free online ruler calibrated to actual size in inches, cm, and mm without downloads. Features auto screen detection, credit card calibration, protractor, and visual calipers.

Calibrate for 100% Physical Accuracy

Click Calibrate to auto-detect your screen or match a physical credit card, banknote, or monitor diagonal.

  • 1. Device Database: Auto-detect screen PPI database (250+ devices).
  • 2. Screen Diagonal: Calculate exact PPI from monitor diagonal in inches.
  • 3. Credit Card: Match physical credit card (85.60 mm) to on-screen slider.
  • 4. Banknote & Object: Compare physical banknote or coin against screen.

Select Your Measurement Unit

Switch between Centimeters (cm), Millimeters (mm), Inches (inch), Pixels (px), Points (pt), Picas, Feet, and Yards.

Place & Measure Objects

Place objects along screen edge rulers, drag visual caliper, or click Guidelines/Crosshair to measure in real time.

❓ Frequently Asked Questions (FAQ)

Click any question below to expand the detailed answer.

Q1. Can I use my phone as a ruler?
Yes! OnlineRulerAI turns any smartphone (iPhone, Android, Samsung, Pixel) into a 1:1 actual size digital ruler. You can calibrate your mobile display using a standard credit card (85.60 mm) or auto-detect your device model to measure physical objects directly on your screen.
Q2. Is there a ruler online?
Yes, OnlineRulerAI provides a free online ruler calibrated to actual real-world physical dimensions. It displays 12 inch, 30 cm, and millimeter scale lines on your monitor, tablet, or mobile phone screen without downloading any app.
Q3. How to identify 1 inch?
One inch equals exactly 2.54 centimeters or 25.4 millimeters. On an actual size online ruler, 1 inch is demarcated by the longest tick mark labeled with a '1″' symbol.
Q4. How to measure cm online?
Select the 'cm' unit button on OnlineRulerAI. Place your physical object flat against your screen aligned with the zero line (0 cm), and read the corresponding major mark.
Q5. Can a smartphone measure?
Yes, via camera AR apps or directly on screen using OnlineRulerAI browser tools for small items up to 15 cm with millimeter precision.
Q6. Can I use my camera as a ruler?
Yes! Camera ruler applications use AR camera alignment to measure room dimensions, furniture, and larger physical items in real-time.
Q7. Can we measure online?
Absolutely. You can measure physical items directly on your computer or mobile screen using OnlineRulerAI's free web tools.
Q8. How to read a ruler online?
Align one end of your object with the '0' mark. In cm mode: numbered tick marks are centimeters; smallest ticks are millimeters. In inch mode: numbered ticks are full inches.
Q9. How to view or add a ruler in Word Online?
In Microsoft Word Online, click on the 'View' tab in the top ribbon and check the 'Ruler' box.
Q10. How to show a ruler in PowerPoint Online?
In Microsoft PowerPoint Online, navigate to the 'View' tab and check the 'Ruler' box.
Q11. How to use an online ruler?
Open OnlineRulerAI in your browser, click 'Calibrate' to adjust your screen PPI with a credit card or device model, and lay your object flat on the screen to measure.

How to Measure & Find Your Perfect Panty Size

Finding comfortable underwear starts with accurate measurements. Ill-fitting panties can dig into skin, ride up, or cause visible panty lines under clothes.

Understanding Panty Styles & Coverage

Classic Briefs & High-Waist

Offers full rear coverage and sits at or near the natural waist. Ideal for maximum daily comfort.

Bikini & Hipster Cuts

Sits lower on the hips with moderate rear coverage. Versatile for low-rise jeans and shorts.

Thong & T-Back

Minimal rear coverage designed to eliminate visible panty lines under tight-fitting skirts or leggings.

Frequently Asked Questions (FAQ)

Should I size up or down if I'm between panty sizes?

If you are between sizes, it is usually best to size up for comfort, as tight elastic bands can create uncomfortable pressure points.

How does hip measurement affect panty fit?

Because panties wrap around your hips, the fullest hip measurement is the primary indicator of proper panty sizing across all brands.

Calibrate

Choose a method for 100% physical accuracy.

Viewport Resolution -- x --
Device Pixel Ratio 1.0
250+ Models
PPI

Guide

Master shortcut keys for fast measuring.

Drawing Tools

Guidelines [G]

Click anywhere on screen to drop persistent horizontal or vertical alignment lines labeled with exact physical distances.

Crosshair [X]

Full-screen dual-axis crosshairs following your cursor with real-time X and Y coordinate measurements.

Keyboard Shortcuts

Toggle Guidelines Tool G
Toggle Full-Screen Crosshair X
Clear All Guidelines & Overlays Esc
Switch Units (cm, mm, inch, px)
1 (cm) 2 (mm) 3 (inch) 4 (px)
Toggle Full Dark / Full Light Theme D
Toggle Caliper Box C
Open Calibration Dialog K
Toggle Fullscreen Mode F