Visual size comparison tool
Compare any size visually
Add any object with a name, measurement, and unit. Or load one of the examples below and change the lineup.
Values are converted to one base unit before scaling. Very small objects may appear as a dot when the difference is large.
One page, four useful scales
What is a visual size comparison?
A visual size comparison places selected objects on one proportional scale so their differences are easier to judge. Choose from the supplied examples or add your own measurement, then switch units without changing the underlying ratio. Each group states whether it compares diagonal, length, height, or diameter.
Screen, monitor, and TV sizes
Screen size comparison for 24, 27, 32, and 55 inches
Screen size is measured diagonally, not across the width. Because every example here uses the same 16:9 aspect ratio, the proportional screen shapes compare both the diagonal and the overall scale consistently. A 55-inch TV has 2.29 times the diagonal of a 24-inch monitor and more than five times its screen area.
Measurement basis: Diagonal measurement; every example uses a 16:9 display.
| Example | Metric | US | Reference |
|---|---|---|---|
| 24-inch monitor | 61 cm | 24 in | Compact desktop display |
| 27-inch monitor | 68.6 cm | 27 in | Common desktop step-up |
| 32-inch monitor | 81.3 cm | 32 in | Large desktop display |
| 55-inch TV | 139.7 cm | 55 in | Living-room display |
Car and vehicle sizes
Vehicle size comparison from a city car to a transit bus
Vehicle length changes by model, trim, cab, and body style, so this group uses rounded class references rather than pretending there is one universal car size. It is useful for comparing the space a small car, sedan, pickup, and bus occupy; check the manufacturer specification before planning a garage or parking space.
Measurement basis: Representative overall length; exact dimensions vary by model.
| Example | Metric | US | Reference |
|---|---|---|---|
| City car | 3.7 m | 12.1 ft | Rounded class reference |
| Family sedan | 4.8 m | 15.7 ft | Rounded class reference |
| Full-size pickup | 5.4 m | 17.7 ft | Rounded class reference |
| Transit bus | 12 m | 39.4 ft | Rounded class reference |
Animal and blue whale sizes
Animal size comparison from a person to a blue whale
Animal dimensions need an explicit measuring direction. The human, elephant, and giraffe references use standing height, while the blue whale uses body length. The shared scale is therefore a visual magnitude comparison, not an anatomical like-for-like measurement, and keeps the whale beside familiar land-animal references.
Measurement basis: Reference height for upright subjects and length for the blue whale.
NOAA reports that Antarctic blue whales can reach about 110 feet; the other animal values are rounded visual references. NOAA Fisheries blue whale profile
| Example | Metric | US | Reference |
|---|---|---|---|
| Adult human | 1.75 m | 5.74 ft | Height reference |
| African elephant | 3.3 m | 10.8 ft | Shoulder-height reference |
| Giraffe | 5.5 m | 18 ft | Height reference |
| Blue whale | 33.5 m | 109.9 ft | Maximum length reported by NOAA |
Planet diameters
Planet size comparison from Mercury to Jupiter
Planet size is compared by equatorial diameter. This keeps Mercury, Earth, Neptune, and Jupiter on one consistent physical measure. Jupiter is about 11.2 times wider than Earth, while Mercury is only about 38 percent of Earth's diameter. Distances from the Sun are not part of this scale.
Measurement basis: Equatorial diameter, using NASA reference values.
Planet diameters use NASA's published equatorial measurements. NASA planet sizes and locations
| Example | Metric | US | Reference |
|---|---|---|---|
| Mercury | 4,880 km | 3,032 mi | Smallest planet |
| Earth | 12,756 km | 7,926 mi | Reference planet |
| Neptune | 49,528 km | 30,775 mi | About four Earths wide |
| Jupiter | 142,984 km | 88,846 mi | Largest planet |
Read the scale accurately
How to compare sizes without mixing dimensions
The visual is only meaningful when the numbers refer to a clearly named dimension. Use these three checks before drawing a conclusion.
- 01
Check what is measured
Diagonal, height, length, and diameter answer different questions.
- 02
Keep one scale per group
Every object in a selected group uses the same maximum and proportional scale.
- 03
Treat references honestly
Exact models and living animals vary, so rounded examples are labeled as references.