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Open Exchange Rates Convert API

Convert a value between two currencies at the latest rates.

Open Exchange Rates Convert API is one of 7 APIs that Open Exchange Rates publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Convert. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 1 operation across 1 path, and defines 2 schemas. It is described by OpenAPI 3.0.3, at version 1.0.

Requests are made against a single base URL, https://openexchangerates.org/api.

1 operations 1 paths 2 schemas 1 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.3
API Version
1.0
Base URL
https://openexchangerates.org/api
Authentication
API Key, API Key
Terms of Service
Resource Areas
1

Authentication & Security 2

Open Exchange Rates Convert API declares 2 security schemes for authenticating requests. An API key is passed in the query as app_id (appIdQuery). An API key is passed in the header as Authorization (appIdHeader). By default, every request must be authenticated.

  • appIdQuery — Your unique App ID, passed as a query parameter.
  • appIdHeader — Your unique App ID, passed as a header: Authorization: Token YOURAPPID.

Paths & Operations 1

Across 1 path, the API surfaces 1 operation — 1 GET. Each is listed below with its method, path, parameters, and response codes.

Convert 1

Convert a value between two currencies at the latest rates.

GET
/convert/{value}/{from}/{to}
Convert a value between two currencies
convertCurrency 4 params → 200401403429

Schemas 2

The contract defines 2 schemas that model the data the API accepts and returns. The most detailed are Conversion (5 properties), Error (4 properties). Each schema is shown below with its type and property counts.

Error
object
4 properties
Conversion
object
5 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

openexchangerates-convert-api-openapi.yml Raw ↑

Other APIs Open Exchange Rates publishes across the network.

Open Exchange Rates Currencies API
Open Exchange Rates Historical Rates API
Open Exchange Rates Latest Rates API
Open Exchange Rates OHLC API
Open Exchange Rates Time Series API
Open Exchange Rates Usage API
Where this information came from

This is an independent, third-party profile of Open Exchange Rates Convert API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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