Or type coordinates
Click the map to place the centre, or pick a city above. Type the radius first.
Measured on the real shape of the Earth (WGS84), not on flat map pixels. Your shapes stay in this browser. The map pictures come from OpenStreetMap, so the map server sees which area you look at. Map data © OpenStreetMap contributors.
About the radius map
What is within 10 miles of here? This radius map draws a circle of the radius you choose around any point. Pick a city, use your location, or click the map, then type the radius in miles, kilometres, metres, feet or nautical miles.
You can draw several circles in different colours — for example a 5-mile and a 25-mile zone, or one circle around each of two shops. For each circle the tool shows the area inside (in square miles, km², acres and hectares), the diameter and the distance around the edge.
The circles are true circles on the Earth: every point on the edge is the same distance from the centre, measured over the Earth's surface.
Features
- Any radius — type a number in miles, km, m, ft or nautical miles, or tap a quick size from 1 mi to 100 km
- Several circles — each with its own centre, radius and colour
- Move it your way — click the map to move the selected circle, or drag its centre dot
- Area inside — in sq mi, km², acres, hectares, m² and sq ft, plus the diameter and the length around the edge
- True circles on the globe — big circles are not squashed, even far from the equator
- Find a place fast — a built-in city list, your location, or typed coordinates
- Map picture — download a PNG with your circles, a short legend, a scale bar and the map credit
Area inside a circle
The area of a circle is π × radius². The tool measures it on the Earth's real shape, so for very big circles it is a little smaller than the flat formula. Up to about 25 miles the two agree to the digits below.
| Radius | Area (sq mi) | Area (km²) | Acres |
|---|---|---|---|
| 1 mile | 3.14 | 8.14 | 2,011 |
| 5 miles | 78.54 | 203.42 | 50,265 |
| 10 miles | 314.16 | 813.67 | 201,062 |
| 25 miles | 1,963.5 | 5,085.4 | 1,256,633 |
| 50 miles | 7,853.9 | 20,341 | 5,026,482 |
| 100 miles | 31,414 | 81,363 | 20,105,125 |
| 1 km | 1.21 | 3.14 | 776 |
| 10 km | 121.30 | 314.16 | 77,630 |
| 100 km | 12,130 | 31,415 | 7,762,885 |
At 100 miles the curved Earth makes the area about 0.005% smaller than π × r² (31,414 instead of 31,416 sq mi). The tool shows the real value.
What people use a radius map for
- Delivery or service area — show customers the 10-mile zone you drive to
- Moving house — see which towns are within 25 miles of your work
- Trips and walks — how far you can go from a hotel or a campsite
- Events and clubs — who lives within 5 km of the meeting place
- Radio and drones — draw the range around a point (check your local rules too)
- School and study — see what "a 50 km radius" really looks like on a map
A circle is distance as the crow flies. Roads are longer, so a 10-mile circle is not the same as a 10-mile drive.
Miles, kilometres and nautical miles
| Unit | In metres | In kilometres | In miles |
|---|---|---|---|
| 1 mile | 1,609.344 | 1.609 | 1 |
| 1 kilometre | 1,000 | 1 | 0.621 |
| 1 nautical mile | 1,852 | 1.852 | 1.151 |
| 1 foot | 0.3048 | 0.000305 | 0.000189 |
Frequently asked questions
How do I draw a 5-mile radius on a map?
Type your city or tap "Use my location". Then tap the "5 mi" button. The circle appears around that point, with its area. Click anywhere on the map to move it.
Can I draw more than one circle?
Yes. Press "Add a circle" for a new circle at the middle of the map. Each circle has its own radius and colour. Click a centre dot or a name in the list to choose which circle you change.
Why is the area not exactly π × r²?
The Earth is round. On a curved surface a circle holds a tiny bit less area than on a flat sheet. For everyday sizes the difference is far below what the numbers show; at 100 miles it is about 2 square miles out of 31,416.
Why can I not draw a circle of 3,000 km around Tromsø?
That circle would go over the North Pole, and a flat web map cannot show it. Make the radius smaller, or move the centre further from the pole.
Does it measure driving distance?
No. The circle is the straight distance over the Earth's surface. Driving or walking routes are longer.
Are my circles saved or sent anywhere?
They stay in this browser for your next visit. They are not sent anywhere. The map pictures come from OpenStreetMap's servers, so those servers see which part of the world you look at.
Related tools
- Map Area Calculator — draw any shape and get its area in acres
- GPS Coordinates — read the coordinates of any point
- Coordinates to Map — see where a pair of coordinates lands
- Unit Converter — miles, kilometres and more
- Speedometer — live speed and trip distance from your phone's GPS
How to use it
- Type the radius and pick the unit (miles, km, m, ft or nmi), or tap a quick size like 10 mi.
- Type a city in Go to a city, tap Use my location, or click the map to place the centre.
- Read the area inside the circle, its diameter and the distance around the edge.
- Click the map, or drag the centre dot, to move the circle. Type a new radius to change it.
- Press Add a circle to draw another one. Pick a circle in the list to change it, or remove it with ×.
- Press Download the map picture (PNG) to save the map with your circles.
