Visual height comparison tool for people, animals, objects, and characters
Design DIY furniture from aluminum extrusion, resize it in 3D, and get a parts list that matches the model
Stage
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Founded
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Based in
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US
Pricing model
Freemium
Free
Pricing
Free plan available with limited features. HowHeight Pro plans: Monthly $4.99, Quarterly $9.99 per 3 months (with permanent unlock of more object placements), Yearly $29.99 per year (with permanent unlock and lifetime compression after 7-day trial ends and annual payment succeeds).
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Key features
Visual height comparison on a shared baseline scale
Support for centimeters and feet plus inches measurements
Compare people, celebrities, animals, objects, and fantasy characters
Save comparison boards with Pro subscription
Export comparisons as PNG images
Create shareable links for comparison boards
1,000+ built-in asset references
Custom names and editable entries
Ad-free workspace with Pro subscription
Unlimited objects on boards with Pro subscription
Resize designs in 3D to custom dimensions
Parts list generated from the same model data
All dimensions in metric and inches
Every part linked to US sellers
Designs checked against fit rules before listing
Part data sourced from manufacturer drawings
Designs labeled as AI draft or test-built
No account needed to browse and design
What makes it different
Over 1,000 built-in asset references with celebrity presets for instant comparisons
Single shared baseline makes height differences proportional and easy to understand at a glance
Simple three-step workflow with no signup required for basic use
Export and share results as PNG images or shareable links
Parts automatically computed to fit together based on slot systems and hardware compatibility
Data sourced from manufacturer specifications rather than guesses
Cut lengths computed from design model, not estimated
Distinguishes between reference data and physically verified designs
HowHeight
Slot & Shaft