# Web Map

A **web map** is an interactive digital map that is accessed and used through a web browser or web application. Unlike static paper maps, web maps are dynamic and allow users to zoom, pan, search, and interact with spatial data in real time.

### Why do distances on the map look "wrong" ?

You may notice that some distances — such as from Moscow to Kamchatka versus West Africa to Eastern Europe—look incorrect when visualized on the map. This is a common source of confusion, and it's caused by how maps represent the curved surface of the Earth.

#### The earth is round — Maps are flat

The Earth is (roughly) a sphere, but maps are 2D. To display a globe on a flat screen, we use a map projection. Every map projection introduces some kind of distortion—either in size, shape, direction, or distance.

One of the most widely used [**map projections**](https://en.wikipedia.org/wiki/Map_projection) is the [**Web Mercator projection**](https://en.wikipedia.org/wiki/Web_Mercator_projection), which is great for navigation and widely supported in web maps—but it distorts size and distance, especially near the poles. For example:

{% hint style="info" %}
Russia looks much larger than Africa, but in reality, Africa is bigger.
{% endhint %}

Eastern Russia looks extremely "stretched" horizontally, so the Moscow–Kamchatka distance looks longer than it actually is.

Distances near the equator appear more accurate than those near the poles.

### What distance.to actually measures

Our service calculates **real distances along the Earth's surface**, either:

* as the [**shortest path**](/features/calculation.md) for airline routes, or
* as [**real-world driving distances**](/features/routing.md) where available.

These numbers are accurate and **not based on map visualization**. So even if a route *looks* longer on the map, the distance reported is correct.

### **Visuals vs Reality**

It's completely normal that:

* A shorter airline route *looks longer* on the map if it's farther north or south.
* Longitudinal lines appear "stretched" in higher latitudes.
* Russia looks much bigger than it really is compared to countries near the equator.

### Resources

{% embed url="<https://www.nature.com/nature-index/news/data-visualisation-animated-map-mercater-projection-true-size-countries>" %}

{% embed url="<https://thetruesize.com/>" %}
the true sizes on countries visualized
{% endembed %}


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