SizeGap
Visual Scale Studio
SizeGap • See the height difference at a glance.

Visualize Scale. Compare Heights. See the Size Gap.

Compare people, animals, objects, and fantasy references on one visual scale with accurate scaling and clean exports.

SizeGap Studio Canvas
3 Lineup Figures
Stage:
100%
0102030405060708090100110120130140150160170180190200210220230240SCALE: CM Partner A (..183 cm Partner B (..165 cm (+6cm) Standard Door203.2 cmGAP: 12.0 cmGAP: 32.2 cm

Figures on Canvas (3)

Drag to reorder
cm
ftin
cm
ftin
cm
ftin
15 Interactive Stature & Scale Calculators

Complete SizeGap Tool Suite & Simulators

Launch any specialized calculator, growth curve, or biomechanical simulator with a single tap.

Versatile Use Cases

Engineered for every scale comparison

Whether you are planning an outfit, designing a game character, or curious about celebrity heights.

Most Popular

Couples & Dating Gap

Visualize height differences with your partner. Calculate forehead and chin alignment, eye-level gaze, and try different heel heights.

Creative Suite

Artists & Character Design

Build proportional character lineup reference sheets for manga, anime, 3D modeling, comic books, and fantasy worldbuilding.

Athletics

Sports & Basketball Scouting

Compare professional athletes against NBA regulation 10-foot rims, soccer goals, and average demographic statures.

Scale Reference

Prehistoric & Architecture Scale

Place humans next to Tyrannosaurus Rex, African elephants, blue whales, doors, cars, and landmark monuments to understand true scale.

How Visual Height Comparison & Scale Calibration Works on SizeGap.com

1. Couple Height Difference & Eye-Level Sightlines

When comparing two partners on SizeGap, our engine calculates both the absolute vertical gap in centimeters and inches and the anatomical eye-level offset (~11.5 cm below the cranial vertex). You can also add footwear or high heels (0–15 cm) to preview dressed stature side-by-side.

2. Global Stature Benchmarks & WHO Percentiles

Global adult stature averages approximately 171 cm (5'7.3") for men and 159 cm (5'2.6") for women, with significant regional variation—from 183.8 cm for Dutch men to 177.0 cm in the United States. Our Percentile and Growth Chart tools let you compare any height against verified WHO and NCD-RisC distributions.

3. True-to-Scale Silhouttes, Celebrities & Landmarks

Unlike static tables, SizeGap dynamically rescales its SVG coordinate grid from 10 cm (smartphones and soda cans) up to 300+ meters (the Eiffel Tower, Statue of Liberty, and dinosaurs) while preserving crisp vector resolution for 4K PNG downloads.

Official Documentation & Policies:
Frequently Asked Questions

Everything you need to know about SizeGap

Clear answers about mathematical scaling, couple comparisons, photo calibration, and exporting.

SizeGap calculates dimensions on a calibrated mathematical scale engine with sub-pixel precision. All figures, celebrities, objects, and animals are anchored to a shared zero-elevation ground baseline, ensuring 100% accurate visual proportions whether you are comparing a toddler with a basketball player or a human with a T-Rex.
Yes! SizeGap includes dedicated Couple Gap Analytics. You can see the exact height difference in centimeters and inches, calculate where partner A’s eye-level meets partner B (e.g., forehead, nose, or shoulder), and simulate dressed footwear with the high-heel slider.