FCC (Federal Communications Commission)

FCC (Federal Communications Commission) Coordinate Conversion API

Convert between decimal degrees and degrees-minutes-seconds

GitHub OpenAPI

Operations 2

GET /dd2dms.json Convert Decimal Degrees to DMS #
GET /dms2dd.json Convert DMS to Decimal Degrees #

Documentation

📖
Documentation
https://www.fcc.gov/census-block-conversions-api
📖
Documentation
https://geo.fcc.gov/api/contours/

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/fcc/refs/heads/main/openapi/fcc-coordinate-conversion-api-openapi.yml

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OpenAPI Specification

fcc-coordinate-conversion-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: FCC Contours Coordinate Conversion API
  description: 'The FCC Enterprise Contours API provides broadcast radio and television service area data. Includes coverage contours for FM and TV stations by call sign, Facility ID, or ApplicationID, plus elevation, Height Above Average Terrain (HAAT), antenna patterns, coordinate conversion, and distance-curve calculations. All endpoints are free with no authentication required.

    '
  version: 1.5.0
  contact:
    name: Federal Communications Commission
    url: https://geo.fcc.gov/api/contours/
  license:
    name: FCC API Terms of Service
    url: https://www.fcc.gov/reports-research/developers/api-terms-service
servers:
- url: https://geo.fcc.gov/api/contours
  description: FCC Contours API
tags:
- name: coordinate-conversion
  description: Convert between decimal degrees and degrees-minutes-seconds
paths:
  /dd2dms.json:
    get:
      tags:
      - coordinate-conversion
      operationId: decimalDegreesToDMS
      summary: Convert Decimal Degrees to DMS
      description: 'Convert geographic coordinates from decimal degrees (DD) format to degrees-minutes-seconds (DMS) format.

        '
      parameters:
      - name: lat
        in: query
        required: true
        description: Latitude in decimal degrees
        schema:
          type: number
          format: double
      - name: lon
        in: query
        required: true
        description: Longitude in decimal degrees
        schema:
          type: number
          format: double
      responses:
        '200':
          description: Coordinates in degrees-minutes-seconds format
          content:
            application/json:
              schema:
                type: object
                properties:
                  lat:
                    type: string
                    description: Latitude in DMS format
                  lon:
                    type: string
                    description: Longitude in DMS format
  /dms2dd.json:
    get:
      tags:
      - coordinate-conversion
      operationId: dmsToDecimalDegrees
      summary: Convert DMS to Decimal Degrees
      description: 'Convert geographic coordinates from degrees-minutes-seconds (DMS) format to decimal degrees (DD) format.

        '
      parameters:
      - name: latD
        in: query
        required: true
        description: Latitude degrees
        schema:
          type: integer
      - name: latM
        in: query
        required: true
        description: Latitude minutes
        schema:
          type: integer
      - name: latS
        in: query
        required: true
        description: Latitude seconds
        schema:
          type: number
          format: double
      - name: latDi
        in: query
        required: true
        description: Latitude direction (N or S)
        schema:
          type: string
          enum:
          - N
          - S
      - name: lonD
        in: query
        required: true
        description: Longitude degrees
        schema:
          type: integer
      - name: lonM
        in: query
        required: true
        description: Longitude minutes
        schema:
          type: integer
      - name: lonS
        in: query
        required: true
        description: Longitude seconds
        schema:
          type: number
          format: double
      - name: lonDi
        in: query
        required: true
        description: Longitude direction (E or W)
        schema:
          type: string
          enum:
          - E
          - W
      responses:
        '200':
          description: Coordinates in decimal degrees format
          content:
            application/json:
              schema:
                type: object
                properties:
                  lat:
                    type: number
                    description: Latitude in decimal degrees
                  lon:
                    type: number
                    description: Longitude in decimal degrees