exchangerate.host Alternatives: 7 Best Currency APIs in 2026

If you are searching for exchangerate.host alternatives, you almost certainly hit the same wall everyone else did: the free tier is now 100 requests per month. Not 100 per day, not 100 per hour — one hundred calls, total, for the entire billing month. A single developer testing a checkout page can burn through that before lunch. The service that used to be the internet's default "just grab some rates" endpoint is now a paid product with a demo allowance attached.

This guide compares the 7 best exchangerate.host alternatives in 2026 the way an engineer actually evaluates them: free-tier size, real price at the volume you will actually hit, update frequency, historical coverage, and how much of your existing code you have to rewrite. Every pricing figure below was checked against each provider's own pricing page at the time of writing, and the last section shows the full migration — request, response mapping, and cache — in about ten minutes of work.

What Changed With exchangerate.host

exchangerate.host started life as a community-flavoured free API: no key, no signup, ECB-derived rates, a clean REST interface. That version is gone. The service is now built and maintained by APILayer (APILayer GmbH, headquartered in Vienna, Austria), and it behaves like every other commercial API in that family. Three specific changes are what push developers to look elsewhere.

1. The free tier is 100 requests per month

The current exchangerate.host pricing page lists the Free plan at 100 requests per month, with daily rate updates and no support. For comparison, that is one request every seven hours if you spread them perfectly evenly across a 30-day month. It is a demo allowance, not a development tier. Anything with a test suite, a CI pipeline, or more than one developer will exhaust it immediately.

2. Overages bill automatically instead of stopping

This is the part that surprises people. When you exceed your quota, the API does not return a 429 and stop — it keeps serving and charges you per call. APILayer's own overage table puts the Basic plan at $0.005996 per extra call, and gives this worked example: 10,000 overage calls on the $14.99 Basic plan costs $59.96. That is four times the plan price, added to a bill you did not approve, from a runaway retry loop you did not notice. You get email and dashboard notifications at 75%, 90%, and 100% of quota, but nothing hard-stops.

If your cost model depends on a predictable ceiling, an API that silently converts bugs into invoices is a structural problem, not a pricing quibble.

3. Free and cheap tiers update once a day

Update frequency is tiered: daily on Free, hourly on Basic ($14.99/mo), 10-minute on Professional Plus ($59.99/mo), and 60-second on Business ($99.99/mo). Historical data is delivered as end-of-day values that become available at 00:05 GMT for the previous day. That cadence is fine for bookkeeping. It is not fine for a checkout page, a pricing table, or anything where a stale rate turns into a refund ticket.

4. Support is a separate annual invoice

Standard support is included, but Platinum Support — dedicated account management, priority bug review — is an additional annual charge of $479.88 on Basic, $599.88 on Professional Plus, and $719.88 on Business. It is pre-checked at signup and has to be unticked manually. Worth knowing before you compare monthly prices.

None of this makes exchangerate.host a bad API. It makes it a different API from the one most tutorials still reference, and the economics only work at particular volumes. If you want the broader context on how providers source and price this data, see our guide on where exchange rate APIs get their data.

How to Evaluate an exchangerate.host Alternative

Before the list, the checklist that actually predicts whether a migration sticks:

1. Usable free tier — enough calls to build, test, and run a small production app without a credit card.
2. Overage behaviour — does the API hard-stop at the limit, or bill you for the overshoot?
3. Update frequency at your price point — real-time, hourly, or daily on the plan you will actually buy.
4. Historical and time-series endpoints — a single past date is table stakes; date ranges for charts are not.
5. Base-currency flexibility — some providers lock the free tier to USD or EUR and charge to change it.
6. Currency breadth — majors are easy; the long tail of emerging-market codes is where providers differ.
7. Migration cost — how close is the request and response shape to what you already parse?

The 7 Best exchangerate.host Alternatives in 2026

1. Finexly — the closest like-for-like replacement

Finexly is built for exactly the gap exchangerate.host left behind: real-time and historical rates for 170+ currencies over a plain REST API, with a free plan of 1,000 requests per month (10 requests/minute) and no credit card at signup. That is 10× the free allowance of exchangerate.host, with real-time rather than daily updates, and historical data included rather than gated.

The paid ladder is where the comparison gets pointed. Finexly's Growth plan is $12.99/month for 15,000 requests; exchangerate.host's Basic is $14.99/month for 10,000. You pay less and get 50% more headroom. At the top of the self-serve range both providers charge $59.99/month for 100,000 requests — but Finexly's tier delivers real-time updates where exchangerate.host's Professional Plus refreshes every 10 minutes.

Endpoints are the familiar four — latest, historical, timeseries, and convert — on one consistent response shape, documented in the Finexly API documentation. Full tiers are on the pricing plans page.

Pick it if: you want a drop-in replacement with a free tier you can actually develop against, and predictable pricing as you scale.

2. Frankfurter — free forever, if ~30 currencies is enough

Frankfurter is free, open-source, self-hostable, and needs no API key at all — the closest thing left to the original exchangerate.host experience. It serves European Central Bank reference rates with a deep historical archive. The trade-off is hard: coverage stops at roughly 30 currencies (whatever the ECB publishes), rates move once per working day, and everything is anchored to a euro base.

Pick it if: you are euro-centric, need no exotic pairs, and daily granularity is genuinely fine. Otherwise you will outgrow it the same week you adopt it.

3. ExchangeRate-API — the most generous no-card free key

ExchangeRate-API (a product of AYR Tech, running since 2010) offers two free routes. The open-access endpoint needs no key at all but requires visible attribution, updates once daily, and is rate limited — abusive callers get HTTP 429 and a 20-minute lockout. The free keyed tier gives 1,500 requests per month, daily updates, and no attribution requirement, with no credit card. Pro is $10/month for 30,000 requests with 60-minute updates.

Note the ceiling: historical and time-series data sit on paid plans, and even Pro refreshes hourly. Pick it if: you need volume on a shoestring and daily rates are acceptable. We break the family down further in our ExchangeRate-API vs CurrencyLayer vs Finexly comparison.

4. Open Exchange Rates — deepest currency coverage

Running since 2011 with 200+ currencies and a mature client-library ecosystem. The free tier allows 1,000 requests per month with hourly updates, but is locked to a USD base — changing base currency is a paid feature, which quietly breaks any code that assumed EUR or GBP as the anchor. Paid plans start around $12/month for 10,000 requests.

Pick it if: breadth of currency coverage is your binding constraint and a USD base is natural for your product.

5. Fixer — same house, same billing model

Fixer covers 170+ currencies through the same APILayer endpoint structure as exchangerate.host, which makes it the lowest-effort migration on this list — and also the least meaningful one. The free tier is 100 requests per month with hourly updates and a EUR base, historical on paid plans, and the same automatic overage billing.

Pick it if: you are already invested in APILayer's ecosystem and want consolidated billing. If you left exchangerate.host because of the free tier or the overage model, Fixer solves neither.

6. CurrencyLayer — currencies plus precious metals

Also APILayer. 168 currencies plus precious metals, 100 requests per month free with daily updates and a USD base. The metals coverage is the differentiator; everything else mirrors Fixer.

Pick it if: you need XAU/XAG alongside fiat and you are going straight to a paid plan anyway.

7. CurrencyAPI — fiat and crypto on one endpoint

A straightforward REST API covering 170+ fiat and cryptocurrencies with a free tier of roughly 300 requests per month and daily updates. Faster refresh arrives on paid tiers.

Pick it if: you need crypto and fiat from a single integration and can live with a small free allowance.

Cost Comparison: What You Actually Pay

Headline prices hide the thing that matters, which is cost per useful request at your update frequency. Three realistic volumes:

At 10,000 requests/month. exchangerate.host Basic is $14.99 with hourly updates. Finexly Growth is $12.99 for 15,000 requests with real-time updates. You save on the invoice and get 5,000 requests of headroom before you have to think about it again.

At 100,000 requests/month. Both sit at $59.99. The difference is refresh cadence — 10-minute versus real-time — and whether an overshoot costs you money or returns an error.

At the overage boundary. This is the sharpest divergence. Using APILayer's own published figure, 10,000 calls beyond the Basic plan costs $59.96 — more than four times the base subscription. A misconfigured cron job or a retry storm converts directly into an invoice. Providers that hard-stop at the quota turn the same incident into an alert instead.

The practical defence works regardless of provider: cache aggressively and fail closed. Rates that update hourly do not need to be fetched per page view. Our guide to currency API caching and error handling covers the patterns — TTL selection, stale-while-revalidate, and circuit breakers — that keep both your latency and your bill flat.

How to Migrate Off exchangerate.host

Most exchangerate.host integrations are one GET request and one response parser, so the migration is mechanical. There are exactly two things to map.

Step 1: Map the request

exchangerate.host uses the APILayer convention — an access_key query parameter, with source for the base currency and currencies for the targets:

# exchangerate.host — key in the URL
curl "https://api.exchangerate.host/live?access_key=YOUR_ACCESS_KEY&source=USD&currencies=EUR,GBP,JPY"

Finexly uses a standard Authorization header and the more conventional base / symbols parameter names:

# Finexly — key in the header, real-time rates
curl "https://api.finexly.com/v1/latest?base=USD&symbols=EUR,GBP,JPY" \
  -H "Authorization: Bearer YOUR_API_KEY"

Moving the key out of the query string is a small security upgrade on its own: URLs end up in server logs, proxy logs, browser history, and referrer headers. Headers usually do not.

Step 2: Map the response

This is the only part that touches your parsing code. APILayer-family responses key each quote by the concatenated pair (USDEUR), so you have to strip the source prefix to get a usable symbol. Finexly returns a flat rates object keyed by the target symbol:

{
  "success": true,
  "base": "USD",
  "timestamp": 1755763200,
  "date": "2026-08-21",
  "rates": {
    "EUR": 0.9184,
    "GBP": 0.7842,
    "JPY": 152.31
  }
}

A compatibility shim keeps the rest of your application untouched while you migrate:

// Drop-in replacement returning the concatenated-pair shape your old code expects
async function getQuotes(source = 'USD', currencies = ['EUR', 'GBP', 'JPY']) {
  const url = `https://api.finexly.com/v1/latest?base=${source}&symbols=${currencies.join(',')}`;
  const res = await fetch(url, {
    headers: { Authorization: `Bearer ${process.env.FINEXLY_API_KEY}` }
  });

  if (!res.ok) throw new Error(`FX request failed: ${res.status}`);
  const data = await res.json();

  // Rebuild legacy "USDEUR" keys so downstream code needs no changes
  return Object.fromEntries(
    Object.entries(data.rates).map(([symbol, rate]) => [`${source}${symbol}`, rate])
  );
}

The equivalent in Python, with the staleness guard you should have had all along:

import os, time, requests

FRESHNESS_LIMIT = 15 * 60  # seconds

def get_rates(base="USD", symbols=("EUR", "GBP", "JPY")):
    resp = requests.get(
        "https://api.finexly.com/v1/latest",
        params={"base": base, "symbols": ",".join(symbols)},
        headers={"Authorization": f"Bearer {os.environ['FINEXLY_API_KEY']}"},
        timeout=5,
    )
    resp.raise_for_status()
    data = resp.json()

    age = time.time() - data["timestamp"]
    if age > FRESHNESS_LIMIT:
        raise RuntimeError(f"Rates are {int(age)}s old — refusing to price on stale data")

    return data["rates"]

And in PHP, for the Laravel and WordPress codebases that make up a large share of exchangerate.host's install base:

<?php
$response = wp_remote_get(
    'https://api.finexly.com/v1/latest?base=USD&symbols=EUR,GBP,JPY',
    ['headers' => ['Authorization' => 'Bearer ' . getenv('FINEXLY_API_KEY')], 'timeout' => 5]
);

if (is_wp_error($response)) {
    return get_transient('fx_rates_fallback'); // serve last known good
}

$data = json_decode(wp_remote_retrieve_body($response), true);
set_transient('fx_rates_fallback', $data['rates'], HOUR_IN_SECONDS * 6);
return $data['rates'];

Step 3: Cache before you cut over

Whatever you migrate to, put a cache in front of it on day one. If your rates refresh hourly, a 30-minute TTL cuts your request count by orders of magnitude and makes the free tier viable for real traffic. Always keep a last known good value to serve when the upstream call fails — the fallback in the PHP example above is the whole idea in three lines. Symbol handling is another quiet source of bugs during a migration; our ISO 4217 currency codes guide covers the codes that trip people up.

Which Alternative Should You Pick?

• Replacing a production integration: Finexly. The free tier is 10× larger, updates are real-time rather than daily, and the migration is the two mappings above. Start on the free plan and move up when you outgrow it.
• Hobby project, euro-centric, no key wanted: Frankfurter.
• Maximum free requests, daily rates acceptable: ExchangeRate-API's 1,500/month keyed tier.
• Widest currency list, USD base natural: Open Exchange Rates.
• Already all-in on APILayer: Fixer or CurrencyLayer — but expect the same free tier and the same overage model you are trying to escape.

If you want to sanity-check freshness and coverage yourself before committing, the currency converter runs on the live Finexly feed, and our real-time exchange rates API comparison goes deeper on latency and update guarantees. Weighing a self-hosted feed instead? Read build vs buy for a currency API first.

Frequently Asked Questions

Is exchangerate.host still free? There is still a free plan, but it is capped at 100 requests per month with daily updates and no support. The no-key, effectively-unlimited version that older tutorials reference no longer exists — an API key is required, and meaningful volume starts at $14.99/month.

Why did my exchangerate.host integration suddenly stop working? Almost always the API key requirement. Requests without a valid access_key fail, and the API signals errors by returning false in the success field — sometimes with HTTP 404 or HTTP 521 rather than a conventional 4xx. If your client only checks the HTTP status code, the failure can look like an empty success. Check the success field explicitly.

What is the best free alternative to exchangerate.host? For a usable free tier with real-time data, Finexly at 1,000 requests/month with no credit card. For raw request count with daily data, ExchangeRate-API at 1,500/month. For no key at all with ~30 ECB currencies, Frankfurter.

Will I get charged if I go over my limit? On exchangerate.host, yes — overages bill per call rather than blocking, at $0.005996 per request on Basic. APILayer's own example puts 10,000 overage calls at $59.96. Check the overage policy of any provider you evaluate; some hard-stop at the quota instead, which is safer for uncontrolled traffic.

How long does it take to migrate to another currency API? For a typical single-endpoint integration, under an hour. The work is swapping the request URL and auth method, then remapping the response — APILayer-family APIs key quotes by concatenated pair (USDEUR), while most alternatives return a flat rates object. A compatibility shim like the one above lets you cut over without touching downstream code.

Do I need historical exchange rates? More often than teams expect. Invoicing, tax reporting, and revenue reconciliation all need the rate as of a specific date, not today's rate. Historical access is a paid feature on most providers on this list — check before you commit. Our historical exchange rates API guide covers what to store versus what to fetch.

Get Started With a Free API Key

The reason exchangerate.host is losing developers is not price — it is that the free tier stopped being a place you can build. Ready to migrate? Get your free Finexly API key — no credit card required. You get 1,000 requests per month, real-time rates across 170+ currencies, and historical data included, with plans starting at $6.99/month when you outgrow it. The documentation has a working example in your language, and you can compare currency APIs side by side before you decide.