{"id": "metadata:specifying-units-for-a-column", "page": "metadata", "ref": "specifying-units-for-a-column", "title": "Specifying units for a column", "content": "Datasette supports attaching units to a column, which will be used when displaying\n                values from that column. SI prefixes will be used where appropriate. \n             Column units are configured in the metadata like so: \n             [[[cog\nmetadata_example(cog, {\n    \"databases\": {\n        \"database1\": {\n            \"tables\": {\n                \"example_table\": {\n                    \"units\": {\n                        \"column1\": \"metres\",\n                        \"column2\": \"Hz\"\n                    }\n                }\n            }\n        }\n    }\n}) \n             ]]] \n             [[[end]]] \n             Units are interpreted using  Pint , and you can see the full list of available units in\n                Pint's  unit registry . You can also add  custom units  to the metadata, which will be\n                registered with Pint: \n             [[[cog\nmetadata_example(cog, {\n    \"custom_units\": [\n        \"decibel = [] = dB\"\n    ]\n}) \n             ]]] \n             [[[end]]]", "breadcrumbs": "[\"Metadata\"]", "references": "[{\"href\": \"https://pint.readthedocs.io/\", \"label\": \"Pint\"}, {\"href\": \"https://github.com/hgrecco/pint/blob/master/pint/default_en.txt\", \"label\": \"unit registry\"}, {\"href\": \"http://pint.readthedocs.io/en/latest/defining.html\", \"label\": \"custom units\"}]"}