FINANCE

Convert Currency API

Convert a fiat amount across one or more target currencies using ECB daily reference rates via Frankfurter. Returns both unit rates and the converted amounts.

currencyforexfxecbpython

Try it free Get an API key

How to call it

Send one POST to api.upapi.io/currency-convert.get with your key in the X-Api-Key header and the parameters below as a JSON body. Each call spends 1 weighted unit of your monthly quota. The operation times out after 12 seconds. Identical requests are served from cache for 600 seconds, unbilled.

endpoint

POST https://api.upapi.io/currency-convert.get

Convert Currency API reference

Request parameters

base: stringrequired — ISO-4217 base currency code (e.g. USD)
amount: number — Amount of the base currency to convert
targets: stringrequired — Comma-separated ISO-4217 target currency codes (e.g. EUR,GBP,JPY)

Response fields

base: stringrequired
date: stringrequired
rates: objectrequired
amount: numberrequired
converted: objectrequired
fetchedAt: stringrequired

Example request and response

The example response is generated from this operation’s published output schema — it shows the shape and field names, not values from a recorded call.

json — example request body

{
  "base": "USD",
  "amount": 1,
  "targets": "EUR,GBP,JPY"
}

json — example response shape

{
  "base": "USD",
  "date": "2024-07-04",
  "rates": {},
  "amount": 100,
  "converted": {},
  "fetchedAt": "example"
}

Code snippets

cURL

curl

curl -X POST https://api.upapi.io/currency-convert.get \
  -H 'Content-Type: application/json' \
  -H 'x-api-key: YOUR_API_KEY' \
  -d '{ "base": "USD", "amount": 1, "targets": "EUR,GBP,JPY" }'

JavaScript

javascript

const response = await fetch('https://api.upapi.io/currency-convert.get', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'x-api-key': 'YOUR_API_KEY',
  },
  body: JSON.stringify({
  "base": "USD",
  "amount": 1,
  "targets": "EUR,GBP,JPY"
}),
});

const data = await response.json();
console.log(data);

Python

python

import requests

response = requests.post(
    'https://api.upapi.io/currency-convert.get',
    headers={
        'Content-Type': 'application/json',
        'x-api-key': 'YOUR_API_KEY',
    },
    json={
  "base": "USD",
  "amount": 1,
  "targets": "EUR,GBP,JPY"
},
)

print(response.json())

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
)

func main() {
	payload := []byte(`{ "base": "USD", "amount": 1, "targets": "EUR,GBP,JPY" }`)

	req, _ := http.NewRequest("POST", "https://api.upapi.io/currency-convert.get", bytes.NewBuffer(payload))
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("x-api-key", "YOUR_API_KEY")

	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	body, _ := io.ReadAll(resp.Body)
	var result map[string]any
	json.Unmarshal(body, &result)
	fmt.Println(result)
}

PHP

php

<?php

$payload = json_encode([
    'base' => 'USD',
    'amount' => 1,
    'targets' => 'EUR,GBP,JPY',
]);

$ch = curl_init('https://api.upapi.io/currency-convert.get');
curl_setopt_array($ch, [
    CURLOPT_POST           => true,
    CURLOPT_POSTFIELDS     => $payload,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'Content-Type: application/json',
        'x-api-key: YOUR_API_KEY',
    ],
]);

$response = curl_exec($ch);
curl_close($ch);

$data = json_decode($response, true);
var_dump($data);

Ruby

ruby

require 'net/http'
require 'uri'
require 'json'

uri = URI('https://api.upapi.io/currency-convert.get')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == 'https'

request = Net::HTTP::Post.new(uri.path)
request['Content-Type'] = 'application/json'
request['x-api-key'] = 'YOUR_API_KEY'
request.body = { "base": "USD", "amount": 1, "targets": "EUR,GBP,JPY" }.to_json

response = http.request(request)
puts JSON.parse(response.body)

Java

java

import okhttp3.*;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.Map;

OkHttpClient client = new OkHttpClient();
ObjectMapper mapper = new ObjectMapper();

String json = "{ \"base\": \"USD\", \"amount\": 1, \"targets\": \"EUR,GBP,JPY\" }";

RequestBody body = RequestBody.create(json, MediaType.get("application/json"));
Request request = new Request.Builder()
    .url("https://api.upapi.io/currency-convert.get")
    .post(body)
    .addHeader("Content-Type", "application/json")
    .addHeader("x-api-key", "YOUR_API_KEY")
    .build();

try (Response response = client.newCall(request).execute()) {
    Map<?, ?> result = mapper.readValue(response.body().string(), Map.class);
    System.out.println(result);
}

csharp

using System.Net.Http;
using System.Net.Http.Json;
using System.Text.Json;

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

var payload = JsonSerializer.Deserialize<object>("{ \"base\": \"USD\", \"amount\": 1, \"targets\": \"EUR,GBP,JPY\" }");
var response = await client.PostAsJsonAsync("https://api.upapi.io/currency-convert.get", payload);

var result = await response.Content.ReadFromJsonAsync<JsonElement>();
Console.WriteLine(result);

Frequently asked questions

How much does the Convert Currency API cost per call?

Each call spends 1 weighted unit of your plan's monthly quota. Full pricing is at https://upapi.io/pricing.

How do I authenticate to the Convert Currency API?

Send your key in the X-Api-Key header. A free guest key is available without creating an account.

Are Convert Currency API responses cached?

Yes — identical requests are served from cache for 600 seconds, and a cache hit is not billed.

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