Where does SizeCompare get its dimension data?

Every dimension is sourced from official manufacturer specification sheets and published international standards (such as ISO/IEC 7810 for credit cards and ISO 216 for paper sizes). Each entry records its source and a verification date so the provenance is always traceable.

Is SizeCompare affiliated with any brand or store?

No. SizeCompare is an independent project with no affiliate relationships and no advertising. We do not earn commissions on the products we compare, so our data and visualizations have no incentive to favor any one result.

How accurate are the visual comparisons?

Comparisons are mathematically accurate. Both objects are rendered at the exact same scale factor, so the proportions you see on screen match real-world proportions. We never distort, enlarge, or exaggerate any object.

How can I report incorrect dimensions?

If you spot a measurement that looks wrong, please reach out via our contact page and include the object name and, if possible, a link to the correct official source. We review every report before updating the database.

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About SizeCompare

SizeCompare is an independent size comparison tool that visualizes the real-world dimensions of phones, tablets, laptops and everyday objects at true scale. Our goal is simple: let you see exactly how big something really is, side by side with something you already know.

Our Mission

Numbers like “146.7 mm” or “6.1 inches” are hard to feel. A spec sheet tells you a phone is 146.7 mm tall, but that figure means nothing until you place it next to a credit card, a soda can, or last year’s model. SizeCompare turns abstract measurements into something you can see and judge for yourself.

We believe size decisions—whether a phone fits your hand, whether a laptop fits your bag, whether two devices are really that different—should not require guesswork. So we render every object at a single, consistent scale and let your eyes do the comparing.

What Makes SizeCompare Trustworthy

Verified Data

Every measurement is cross-checked against at least one independent source before publication, with a verification date recorded against each entry.

Independent

No affiliate links, no advertising, no commissions. Our data and visualizations have no incentive to favor one product over another.

True Scale

Both objects in every comparison share one scale factor, so the visual relationship on screen is exactly the relationship that exists in the real world.

Regularly Updated

A scheduled re-verification cycle keeps existing entries current, and new products are added as soon as official specs are released.

Where Our Data Comes From

Accurate dimensions are the foundation of every comparison on this site. We follow a clear priority order when sourcing data:

1.Official manufacturer spec sheets — the authoritative record of a product’s physical dimensions. This is our primary source whenever it is published.
2.International standards — ISO, ANSI, IEC and government publications for reference objects like credit cards, paper sizes, and passports.
3.Trusted technical databases — independently maintained measurement sources used to cross-check when official figures are unavailable.

Every object in our database stores its source URL and a verification date, so the provenance of any number is always traceable. You can read the full process on our Methodology page.

Frequently Asked Questions

Have a question or spotted a wrong measurement?

We review every report before updating the database. Reach out and help us keep the data accurate.