KM Radius Map — Draw a Circle in Kilometers
A radius tool that thinks in kilometers. The map opens with a pre-drawn 10 km circle — adjust it, switch presets, or search any address worldwide. Free, no signup, works entirely in your browser.
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Click the map to drop a circle · drag the white center dot to move · drag the outlined edge dot to resize · up to 12 circles.
Quick answers
How far is 10 km? 10 kilometers = 6.21 miles. Walking it takes about 1 hr 50 min at an average pace; cycling about 25 min; driving roughly 8–12 minutes.
How big is a 10 km radius? A circle with a 10 km radius covers about 314 km² (121 sq mi).
Kilometers to miles reference
Every preset distance with its statute-mile equivalent (1 km = 0.621371 miles):
| Radius (km) | Radius (miles) | Circle area (km²) | Circle area (sq mi) |
|---|---|---|---|
| 1 km | 0.62 | 3.1 | 1.2 |
| 2 km | 1.24 | 12.6 | 4.9 |
| 3 km | 1.86 | 28.3 | 10.9 |
| 5 km | 3.11 | 78.5 | 30.3 |
| 10 km | 6.21 | 314.2 | 121.3 |
| 15 km | 9.32 | 706.9 | 272.9 |
| 20 km | 12.43 | 1256.6 | 485.2 |
| 25 km | 15.53 | 1963.5 | 758.1 |
| 50 km | 31.07 | 7854.0 | 3032.4 |
| 100 km | 62.14 | 31415.9 | 12129.8 |
Working with addresses inside the circle? The ZIP code radius tool lists every ZIP with distances, and the miles-to-minutes guide converts any of these distances into travel time.
Who uses a kilometer radius?
Metric-first audiences. If you, your clients or your readers think in kilometers — international teams, students, recent arrivals — the default-mile tools everywhere else force mental conversions. This page doesn't.
Running & cycling. Training distances are metric almost everywhere: a 5 km loop, a 10 km tempo, a 25 km weekend ride. Draw the ring, then trace the actual route with the route measurer.
Transit & urbanism. “What's within 2 km of the station?” is a daily question in city planning and bike-infrastructure debates.
Global businesses. Delivery radii in most of the world are quoted in km — draw the zone in the unit your customers use.
Explore more map tools
Radius Map
Draw circles around any point on the map.
Walking Radius Map
Walk-time rings around any address.
Miles to Minutes
Convert any distance into travel time.
Start with the KM radius tool above — free, no signup, no usage caps.
Frequently asked questions
How far is 10 km in miles?
10 kilometers = 6.21 miles (6.21371 exactly). A 10 km radius circle covers about 314 km² or 121 square miles.
How do I draw a 10 km radius on a map?
The map above already has one drawn. Search an address to move the center, use the 10 km preset, or drag the edge handle to resize. Copy link shares the exact circle, PNG exports an image, KML opens it in Google Earth.
Can I switch to miles instead?
Yes — the unit dropdown next to the radius input converts on the fly, and you can add circles in mixed units on the same map.
Is the km circle a true circle on the map?
It is a true geodesic circle: every point on the edge is exactly the chosen distance from the center, measured on a spherical Earth model. The web map projection flattens it slightly at large radii, which is normal and identical across all map tools.
Does the radius follow roads?
No — like all radius tools, it measures straight-line (great-circle) distance. Road travel between two points 10 km apart is usually 12–14 km.
Is this km radius tool free?
Completely — no account, no watermark on exports, no usage caps. Display advertising funds the site.
Page last updated . Data sources and methodology are described in the sections above and in About.