Free Currency API

Get a free currency API key in 30 seconds — no credit card. Real-time mid-market exchange rates for 160+ currencies from Reuters/Refinitiv, updated every 60 seconds. 300 requests/month free.

Quick start

One endpoint, one key. Pass the key via an Authorization: Bearer header or a ?key= query param:

curl "https://allratestoday.com/api/rate?source=USD&target=EUR&key=art_live_your_key"

Response:

{ "rate": 0.864566, "source": "refinitiv" }

From JavaScript:

// Works in the browser too — the endpoint sends CORS headers.
const res = await fetch(
  'https://allratestoday.com/api/rate?source=USD&target=EUR&key=art_live_your_key'
);
const { rate } = await res.json();
console.log(`1 USD = ${rate} EUR`);

From Python:

import requests

r = requests.get(
    "https://allratestoday.com/api/rate",
    params={"source": "USD", "target": "EUR", "key": "art_live_your_key"},
)
print(f"1 USD = {r.json()['rate']} EUR")

Prefer a client library? There are official SDKs for JavaScript, Python, PHP, and Rust, and you can try every endpoint in the API playground without writing code.

What the free plan includes

• 300 requests/month — enough for prototypes, side projects, and periodic rate refreshes
• 160+ currencies — every major and most exotic pairs
• Real-time mid-market rates — Reuters/Refinitiv sourcing, updated every 60 seconds
• 1 API key, 10 requests/minute, HTTPS only
• No credit card — sign up with email, Google, or GitHub

Historical rates, time-series endpoints, commercial use, and higher volumes are part of the paid plans (from a few euros per month, with 5,000–100,000 requests).

Free tiers compared

Most "free currency API" tiers trade away freshness: you get a few hundred or thousand requests against rates cached hourly or daily. AllRatesToday's free tier is smaller on volume but serves the same 60-second real-time feed as its paid plans:

Want the full 10-provider breakdown? See the best free currency exchange APIs in 2026 comparison.

What you can build on the free tier

• Currency converters — fetch a pair on demand, or cache rates to serve many conversions per fetch
• Price displays — show localized prices with an hourly refresh (24 requests/day ≈ 720/month cached across users)
• Dashboards and alerts — poll a handful of pairs a few times a day
• Embeddable widget — a one-line converter widget for any site

Frequently asked questions

Is there a truly free currency API?

Yes — the AllRatesToday free tier gives you 300 requests/month with real-time rates for 160+ currencies, no credit card required.

Do I need a credit card?

No. Sign up with email, Google, or GitHub and generate a key immediately.

How fresh are the rates on the free plan?

Identical to paid plans: mid-market rates from Reuters/Refinitiv, updated every 60 seconds. Most competing free tiers serve daily or hourly caches.

Can I use it commercially?

The free plan is for personal projects and testing. Commercial use comes with the paid plans.

What if I exceed 300 requests?

Over-quota requests return a clear error — you're never silently billed. Caching stretches the quota a long way, and upgrades start at 5,000 requests/month.

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