> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-apis/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-apis/accessing-os-apis/os-maps-api/layers-and-styles.md).

# Layers and styles

OS Maps API is available as EPSG:27700 (British National Grid which is applicable just for GB) and EPSG:3857 (Web Mercator which is a global coordinate system).

The API includes four OS styles: Road, Outdoor, Light (in both 27700 and 3857), and Leisure (in 27700).

<table><thead><tr><th width="198">Style</th><th>Projection</th><th>Layer Name</th><th>Tile Matrix Set</th></tr></thead><tbody><tr><td>Road</td><td>EPSG:27700</td><td><code>Road_27700</code></td><td>EPSG:27700</td></tr><tr><td>Road</td><td>EPSG:3857</td><td><code>Road_3857</code></td><td>EPSG:3857</td></tr><tr><td>Outdoor</td><td>EPSG:27700</td><td><code>Outdoor_27700</code></td><td>EPSG:27700</td></tr><tr><td>Outdoor</td><td>EPSG:3857</td><td><code>Outdoor_3857</code></td><td>EPSG:3857</td></tr><tr><td>Light</td><td>EPSG:27700</td><td><code>Light_27700</code></td><td>EPSG:27700</td></tr><tr><td>Light</td><td>EPSG:3857</td><td><code>Light_3857</code></td><td>EPSG:3857</td></tr><tr><td>Leisure</td><td>EPSG:27700</td><td><code>Leisure_27700</code></td><td>EPSG:27700</td></tr></tbody></table>

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th data-hidden></th><th data-hidden></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td><strong>Light</strong></td><td></td><td></td><td data-object-fit="cover" data-alt="Example image showing the Light style for the OS Maps API."><a href="/files/9s8FPWWerNnyGP4UL19A">/files/9s8FPWWerNnyGP4UL19A</a></td></tr><tr><td><strong>Outdoor</strong></td><td></td><td></td><td data-object-fit="cover" data-alt="Example image showing the Outdoor style for the OS Maps API."><a href="/files/7g2PEQwM6eeaGfGMt1rs">/files/7g2PEQwM6eeaGfGMt1rs</a></td></tr><tr><td><strong>Road</strong></td><td></td><td></td><td data-object-fit="cover" data-alt="Example image showing the Road style for the OS Maps API."><a href="/files/hNcZQpb23cVRLKDHxWfT">/files/hNcZQpb23cVRLKDHxWfT</a></td></tr><tr><td><strong>Leisure</strong></td><td></td><td></td><td data-object-fit="cover" data-alt="Example image showing the Leisure style for the OS Maps API."><a href="/files/p6J1lIhBfRUEQB5gOmB3">/files/p6J1lIhBfRUEQB5gOmB3</a></td></tr></tbody></table>

## EPSG:3857 tile matrix set

The road, outdoor and light styles table below shows the resolution (meters per pixel) and scale of the zoom levels within the EPSG:3857 tile matrix set. The scale is calculated at a DPI of 96. The table also shows which zoom levels are OS OpenData, and which levels are Premium data.

The zoom levels start at 7 to fit in with the industry standard initial zoom layer. This improves the interoperability of this tile matrix set with third party tools and applications.

### Road, Outdoor and Light Styles

<table><thead><tr><th width="100.162109375">Zoom Level</th><th width="117.5675048828125">Resolution</th><th width="116.4234619140625">Scale</th><th width="132.044921875">Data Licence</th><th width="281.786376953125">Data Product</th></tr></thead><tbody><tr><td>7</td><td>1,223</td><td>1:4 622 324</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>8</td><td>611</td><td>1:2 311 162</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>9</td><td>306</td><td>1:1 155 581</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>10</td><td>153</td><td>1:577 791</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>11</td><td>76</td><td>1:288 895</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>12</td><td>38</td><td>1:144 448</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>13</td><td>19</td><td>1:72 224</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>14</td><td>9.6</td><td>1:36 112</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>15</td><td>4.8</td><td>1:18 056</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>16</td><td>2.4</td><td>1:9 028</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>17</td><td>1.2</td><td>1:4 514</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer">MasterMap Topography</a> blended with <a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>18</td><td>0.60</td><td>1:2 257</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer">MasterMap Topography</a></td></tr><tr><td>19</td><td>0.30</td><td>1:1 128</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer">MasterMap Topography</a></td></tr><tr><td>20</td><td>0.15</td><td>1:564</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer">MasterMap Topography</a></td></tr></tbody></table>

## EPSG:27700 tile matrix set

The road, outdoor and light styles and leisure styles tables and below show the resolution (meters per pixel) and scale of the zoom levels within the EPSG:27700 tile matrix sets. The scale is calculated at a DPI of 96. The tables also show which zoom levels are OS OpenData, and which levels are Premium data.

The zoom levels for the EPSG:27700 tile matrix set starts at 0 rather than at level 7, which is used for the EPSG:3857 tile matrix set. The range of resolutions and scales is comparable across both tile matrix sets. This means EPSG:27700 zoom level 0 is similar to EPSG:3857 zoom level 7.

### Road, Outdoor and Light Styles

<table><thead><tr><th width="100.28228759765625">Zoom Level</th><th width="117.6036376953125">Resolution</th><th width="116.288330078125">Scale</th><th width="132.0181884765625">Data Licence</th><th width="281.79193115234375">Data Product</th></tr></thead><tbody><tr><td>0</td><td>896.0</td><td>1:3 386 450</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>1</td><td>448.0</td><td>1:1 693 225</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>2</td><td>224.0</td><td>1:846 612</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>3</td><td>112.0</td><td>1:423 306</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>4</td><td>56.0</td><td>1:211 653</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>5</td><td>28.0</td><td>1:105 827</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>6</td><td>14.0</td><td>1:52 913</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>7</td><td>7.0</td><td>1:26 457</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>8</td><td>3.5</td><td>1:13 228</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>9</td><td>1.75</td><td>1:6 614</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>10</td><td>0.875</td><td>1:3 307</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer">MasterMap Topography</a> blended with <a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-open-zoomstack">Open Zoomstack</a></td></tr><tr><td>11</td><td>0.4375</td><td>1:1 654</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer">MasterMap Topography</a></td></tr><tr><td>12</td><td>0.21875</td><td>1:827</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer">MasterMap Topography</a></td></tr><tr><td>13</td><td>0.109375</td><td>1:413</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer">MasterMap Topography</a></td></tr></tbody></table>

### Leisure Style

<table><thead><tr><th width="100.28228759765625">Zoom Level</th><th width="117.6036376953125">Resolution</th><th width="116.288330078125">Scale</th><th width="132.0181884765625">Data Licence</th><th width="281.79193115234375">Data Product</th></tr></thead><tbody><tr><td>0</td><td>896.0</td><td>1:3 386 450</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/gb-overview-maps">GB Overview Maps</a></td></tr><tr><td>1</td><td>448.0</td><td>1:1 693 225</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/miniscale">Miniscale</a></td></tr><tr><td>2</td><td>224.0</td><td>1:846 612</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/miniscale">Miniscale</a></td></tr><tr><td>3</td><td>112.0</td><td>1:423 306</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/1-250-000-scale-colour-raster">1:250 000 Scale Colour Raster</a></td></tr><tr><td>4</td><td>56.0</td><td>1:211 653</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/1-250-000-scale-colour-raster">1:250 000 Scale Colour Raster</a></td></tr><tr><td>5</td><td>28.0</td><td>1:105 827</td><td>Open data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/1-50-000-scale-colour-raster">1:50 000 Scale Colour Raster</a></td></tr><tr><td>6</td><td>14.0</td><td>1:52 913</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/1-50-000-scale-colour-raster">1:50 000 Scale Colour Raster</a></td></tr><tr><td>7</td><td>7.0</td><td>1:26 457</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/1-25-000-scale-colour-raster">1:25 000 Scale Colour Raster</a></td></tr><tr><td>8</td><td>3.5</td><td>1:13 228</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/1-25-000-scale-colour-raster">1:25 000 Scale Colour Raster</a></td></tr><tr><td>9</td><td>1.75</td><td>1:6 614</td><td>Premium data</td><td><a href="https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/1-25-000-scale-colour-raster">1:25 000 Scale Colour Raster</a></td></tr></tbody></table>


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