Accurate dimensions begin with a disciplined process. Here is how SizeCompare collects, verifies, and renders data so every comparison you see is faithful to the real world.
We gather physical dimensions from official manufacturer specification sheets and product documentation, recording width, height, thickness, and weight for every object.
Each measurement is cross-checked against at least one independent source. Discrepancies are flagged and resolved before the data enters our database.
All dimensions are normalized to millimeters internally, eliminating unit confusion and making every comparison consistent and comparable.
Objects are rendered at an identical scale with no distortion, so the visual proportions on screen match real-world proportions exactly.
Every entry carries a verification date. We re-verify existing data on a regular schedule and add new products as soon as official specs are published.
Every object in our database is described by its physical dimensions. We capture four core measurements so comparisons are always complete and meaningful.
The horizontal measurement of an object at its widest point, recorded in millimeters and converted for display in cm or inches.
The vertical measurement from base to top. For devices this is the longest face dimension, captured in its default upright orientation.
The depth of an object — how thick it is from front to back. This is often the most overlooked dimension but the most telling for portability.
Mass recorded in grams. Weight reveals how an object actually feels in hand and is essential for comparing portability between devices.
First-party specification sheets and product documentation are our primary source. They are the authoritative record of a product's physical dimensions.
When official figures are unavailable, we cross-reference reputable, independently maintained databases and measurement sources to confirm dimensions.
Every measurement is cross-checked before publication, with a verification date recorded against each entry.
We do not earn commissions on the products we compare, so our data and visualizations have no incentive to favor one result.
A scheduled re-verification cycle keeps existing entries current, and new products are added as soon as specs are released.
Our process is published in full on this page — sources, standardization, and rendering rules are all openly documented.
Where do you get your dimension data?
We source dimensions from official manufacturer specification sheets and product documentation. Where official figures are unavailable, we cross-reference verified databases and reputable measurement sources. Every entry records where the data came from so the provenance is always traceable.
How accurate are the size comparisons?
Comparisons are mathematically accurate. Every object is rendered at the exact same scale, so the proportions you see on screen match real-world proportions. We do not distort, enlarge, or exaggerate any object — what you see is a true-scale representation of the actual dimensions.
Do you use official specifications?
Yes. Official manufacturer specifications are our primary source whenever they are published. We prefer first-party spec sheets because they are the authoritative record of a product's physical dimensions, and we fall back to verified databases only when official figures are not available.
How often is the data updated?
Data is reviewed and updated continuously as new products launch and manufacturers revise their specifications. Each entry carries a verification date so you can see when its dimensions were last confirmed, and we re-verify existing entries on a regular schedule.
Why are the comparisons rendered at true scale?
True-scale rendering is the only way to give an honest impression of relative size. When objects are shown at different scales, the comparison becomes misleading. By rendering everything at one consistent scale, the visual relationship you see is exactly the relationship that exists in the real world.