Data & Utilities

Currency ExchangeReal-time FX rates and conversion

The Helix Currency Exchange API returns live foreign exchange rates and conversion across 150+ currencies, updated daily from official central-bank feeds. Get the latest rates for any base currency, convert any amount instantly, and list every supported currency.

Free tier with 100 requests/month
Fast, cached responses
99.9% uptime target
Standard REST + JSON

Get API Key (Free) →Dashboard

Interactive Demo

Currency Converter

Amount

From (ISO code)

To (ISO code)

What is the Currency Exchange API?

How it works

1GET /latest?base=USD returns rates against every supported currency.
2GET /latest?base=USD&symbols=EUR,GBP filters to specific targets.
3GET /convert?from=USD&to=EUR&amount=100 converts in one call.
4GET /currencies returns the full list of supported codes.
5Responses are cached for one hour — well within the daily update cadence of the underlying rates.

Endpoints

3 REST endpoints, all returning consistent JSON.

GET

/latest

Latest exchange rates for a base currency

GET

/convert

Convert an amount between currencies

GET

/currencies

List all supported currency codes

Code in 5 languages

Copy and paste into your project. Replace YOUR_API_KEY with your RapidAPI key.

// Currency Exchange API
const response = await fetch(
  "https://currency-exchange-by-helix-api.p.rapidapi.com/latest"
  {
    headers: {
      "X-RapidAPI-Key": "YOUR_API_KEY",
      "X-RapidAPI-Host": "currency-exchange-by-helix-api.p.rapidapi.com"
    }
  }
);

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

What developers build with this API

Real use cases from production deployments.

E-commerce Price Localization

Detect the visitor's currency (via our IP Geolocation API) and convert prices on the fly. Local currency displays lift checkout conversion by 30%+.

Cross-border Invoicing

Issue invoices in the buyer's currency at the time of sale; reconcile to your reporting currency at the same rate later.

Travel & Expense Apps

Show users their hotel bill or rideshare fare in their home currency before they confirm.

Finance Dashboards

Track multi-currency portfolios. Convert holdings to a base currency for reporting without scraping spreadsheets.

Pricing

All tiers include this API. No credit card for free tier.

BASIC

Free

✓ 100 reqs/month
✓ Hard limit
✓ All endpoints

PRO

$9.99/mo

✓ 10,000/month
✓ +$0.005 each
✓ All endpoints

ULTRA

$29.99/mo

✓ 100,000/month
✓ +$0.002 each
✓ All endpoints

MEGA

$99.99/mo

✓ 1,000,000/month
✓ +$0.001 each
✓ All endpoints

View all 20 APIs included →

Frequently asked questions

Real answers to questions developers ask before integrating.

How fresh is the data?

Rates are updated daily from official central-bank sources. For sub-daily FX volatility, source from a specialist provider.

Which currencies are supported?

150+ — all major and most minor world currencies. Call /currencies for the complete list.

Is cryptocurrency supported?

Not in this API — we focus on fiat. Crypto rates change second-by-second and are best served by a dedicated provider.

What's the response shape?

Standard {status, data, timestamp}. data includes base, date, and a rates object keyed by target currency.

Are historical rates available?

Not in v1 — we return only the latest. Historical endpoints are on the roadmap.