Free Exchange Rate API, No Key Required

Live currency rates for 100+ currencies · No signup · CORS enabled · 100 req/min per IP

GETCopy this URL for your first request

https://www.currencyexchangetool.com/api/v1/convert?amount=100&from=USD&to=EUR

url

Paste it into a browser, terminal, app, or Google Sheets workflow. No API key, token, dashboard, or account setup is required.

✓ Why This API Is Different

Most free currency APIs require signup, an API key, or a credit card. This API is completely open — no registration, no auth, no monthly cap.

Zero frictionNo signup, no headers, no SDK

100+ currenciesUSD, EUR, UAH, GBP, JPY, THB, ZAR...

Live ratesUpdated every request from Yahoo Finance

CORS enabledBrowser-ready, no proxy needed

Structured envelopesuccess/error + code on every response

XML formatGoogle Sheets IMPORTXML compatible

Base URL

All endpoints are relative to:

https://www.currencyexchangetool.com

url

Supported Currencies

USD EUR UAH GBP CHF PLN RON CAD AUD JPY CNY TRY INR BRL KRW SEK NOK MXN SGD NZD HKD DKK HUF CZK ILS+75 more

100+ currencies are supported across all endpoints, including major, emerging-market, and cross-rate pairs. Fetch the full list from /api/v1/currencies.

Endpoints

CORS enabled. Every endpoint returns Access-Control-Allow-Origin: * and supports OPTIONS preflight (204) — safe to call directly from the browser.

GET/api/v1/convert

Convert an amount from one currency to another at the live exchange rate. Returns a success/error envelope. Add format=xml for Google Sheets.

Parameters

Name	Type	Required	Description
`from`	string	Yes	Source currency code (e.g. USD)
`to`	string	Yes	Target currency code (e.g. UAH)
`amount`	number	No	The amount to convert (default: 1)
`format`	string	No	json (default) or xml

Request

curl -s "https://www.currencyexchangetool.com/api/v1/convert?amount=100&from=USD&to=UAH"

bash

Response

{
  "success": true,
  "from": "USD",
  "to": "UAH",
  "amount": 100,
  "rate": 44.979,
  "result": 4497.9,
  "change24h": 0.012,
  "changePct24h": 0.03,
  "updatedAt": "2026-06-12T06:06:45.059Z"
}

json

GET/api/v1/currencies

Returns all supported currencies with codes and names. 100+ currencies including emerging-market pairs.

Request

curl -s "https://www.currencyexchangetool.com/api/v1/currencies"

bash

Response

{
  "success": true,
  "count": 100,
  "currencies": [
    { "code": "USD", "name": "US Dollar" },
    { "code": "EUR", "name": "Euro" },
    { "code": "JPY", "name": "Japanese Yen" }
  ]
}

json

GET/api/v1/history

Historical daily rates. Three modes: last N days, a single date (weekend/holiday fallback), or a date range (max 1825 days).

Parameters

Name	Type	Required	Description
`from`	string	Yes	Source currency code
`to`	string	Yes	Target currency code
`days`	number	No	Last N days (1-1825)
`date`	string	No	Single date YYYY-MM-DD
`start_date`	string	No	Range start YYYY-MM-DD (with end_date)
`end_date`	string	No	Range end YYYY-MM-DD (with start_date)

Request

# Last 7 days
curl -s "https://www.currencyexchangetool.com/api/v1/history?from=USD&to=UAH&days=7"
# Date range (max 1825 days)
curl -s "https://www.currencyexchangetool.com/api/v1/history?from=USD&to=UAH&start_date=2026-01-01&end_date=2026-06-01"

bash

Response

{
  "success": true,
  "from": "USD",
  "to": "UAH",
  "days": 7,
  "count": 7,
  "data": [
    { "date": "2026-06-06", "rate": 44.564 },
    { "date": "2026-06-07", "rate": 44.890 },
    { "date": "2026-06-08", "rate": 44.979 }
  ],
  "source": "Yahoo Finance"
}

json

Error (400)

{
  "success": false,
  "error": "Unsupported currency",
  "code": "unsupported_currency",
  "supported": ["USD", "EUR", "GBP", "JPY", "CHF", "CAD"],
  "hint": "Use ISO 4217 currency codes such as USD, EUR, GBP, JPY, CAD, AUD, CNY, or UAH."
}

json

Try It

Send a live request to /api/v1/convert and inspect the response, status code, and rate-limit headers.

Amount

From

GET https://www.currencyexchangetool.com/api/v1/convert?amount=100&from=USD&to=EUR

Quick Start — by Language

JavaScript

const res = await fetch(
  'https://www.currencyexchangetool.com/api/v1/convert?amount=100&from=USD&to=UAH'
);
const data = await res.json();
console.log(`100 USD = ${data.result} UAH`);

javascript

Python

import requests

res = requests.get(
    'https://www.currencyexchangetool.com/api/v1/convert',
    params={'amount': 100, 'from': 'USD', 'to': 'UAH'}
)
data = res.json()
print(f"100 USD = {data['result']} UAH")

python

Go

package main

import (
    "encoding/json"
    "fmt"
    "net/http"
    "net/url"
)

func main() {
    params := url.Values{}
    params.Add("amount", "100")
    params.Add("from", "USD")
    params.Add("to", "UAH")

    resp, _ := http.Get(
        "https://www.currencyexchangetool.com/api/v1/convert?" + params.Encode(),
    )
    defer resp.Body.Close()

    var data map[string]any
    json.NewDecoder(resp.Body).Decode(&data)
    fmt.Printf("100 USD = %v UAH\n", data["result"])
}

PHP

<?php
$response = file_get_contents(
    'https://www.currencyexchangetool.com/api/v1/convert?' .
    http_build_query(['amount' => 100, 'from' => 'USD', 'to' => 'UAH'])
);
$data = json_decode($response, true);
echo "100 USD = {$data['result']} UAH";
?>

php

Ruby

require 'net/http'
require 'json'

uri = URI('https://www.currencyexchangetool.com/api/v1/convert')
uri.query = URI.encode_www_form({ amount: 100, from: 'USD', to: 'UAH' })
data = JSON.parse(Net::HTTP.get(uri))
puts "100 USD = #{data['result']} UAH"

ruby

cURL

curl -s "https://www.currencyexchangetool.com/api/v1/convert?amount=100&from=USD&to=UAH"

curl

Google Sheets — IMPORTXML

Add format=xml to /api/v1/convert to use it with Google Sheets IMPORTXML.

=VALUE(IMPORTXML(
  "https://www.currencyexchangetool.com/api/v1/convert?amount=1&from=USD&to=EUR&format=xml",
  "/response/rate"
))

excel

💡 Tip: Use ENCODEURL for cell references. Sheets caches results — update a referenced cell to force refresh.

How It Compares to Other Free Currency APIs

Most "free" currency APIs require signup, an API key, or a credit card. Here is the 2026 landscape:

API	API Key	Signup	Currencies	Free Limit	Updates
Currency Exchange Tool ⭐	No	No	100+	100/min, no monthly cap	Live
Frankfurter	No	No	~30 (ECB)	Unlimited	Daily
MoneyConvert	No	No	182+	Rate-limited	5 min
ExchangeRate-API (Open)	No	No	160+	Rate-limited	Daily
ExchangeRate-API (Free)	Yes	Yes	160+	1,500/mo	Daily
FreeCurrencyAPI	Yes	Yes	32	1,000/mo	Daily
Open Exchange Rates	Yes	Yes	170+	1,000/mo	Hourly
AllRatesToday	Yes	Yes	160+	Limited	60 sec
Fixer.io	Yes	Yes	170+	100/mo	Daily
CurrencyAPI.net	Yes	Yes	300+	500/mo	Daily

Key takeaway: This is the only API combining no API key, no signup, 100+ currencies, live rates, and no monthly cap.

Rate Limits

Convert & currencies100 req/min per IP. Headers: X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset.

HistoryStricter limit at 30 req/min per IP.

429 responsesInclude a Retry-After header (seconds). Back off and retry after it elapses.

CachingData changes every request. Cache at your discretion — max 1 hour recommended.

Example — 429 Too Many Requests

HTTP/1.1 429 Too Many Requests
Retry-After: 60
X-RateLimit-Limit: 100
X-RateLimit-Remaining: 0

{
  "success": false,
  "error": "Rate limit exceeded",
  "code": "rate_limited"
}

http

HTTP Status Codes

Code	Meaning
`200`	Success
`400`	Bad request — invalid amount or unsupported currency
`404`	Rate not found for this pair
`429`	Rate limit exceeded — includes Retry-After header
`500`	Internal server error

Frequently Asked Questions

Do I need an API key?

No. All endpoints are open — no signup, no key, no auth. Requests are rate-limited per IP, not per account.

Do I need to sign up?

No signup is required. You can copy a URL, paste it into your app, browser, terminal, or spreadsheet, and get a live exchange-rate response immediately.

Is there a monthly limit?

No monthly cap. There is a per-IP rate limit: 100 requests/minute for convert and currencies, 30 requests/minute for history.

What happens if I exceed the rate limit?

You receive HTTP 429 with a Retry-After header (seconds to wait). Every response also includes X-RateLimit-Limit and X-RateLimit-Remaining so you can back off early.

How often are rates updated?

Fetched live from Yahoo Finance on each request. No cached or stale data.

Can I use this in production?

Yes. The API returns a structured success/error envelope, CORS headers, and rate-limit headers suitable for production use.

Does the API support CORS?

Yes. Every endpoint returns Access-Control-Allow-Origin: * and supports OPTIONS preflight, so browser JavaScript can call it directly.

Can I use this in Google Sheets?

Yes — add format=xml to /api/v1/convert and use IMPORTXML. See the Google Sheets section above.

Is historical data available?

Yes — up to 1825 days via /api/v1/history (by days, single date, or a date range).

📋

Attribution

If you use this API in a public project, we appreciate a link back to currencyexchangetool.com. Not required, but it helps keep the API free.

Open Currency Converter