Currency API for Startups

Why Startups Need a Currency API

If your startup serves customers in more than one country, you need exchange rate data. Whether you are pricing a SaaS product in local currencies, building an international marketplace, or generating multi-currency financial reports for investors, hardcoding rates or relying on manual lookups does not scale. A reliable API automates this entirely.

A Pricing Path That Grows With You

Most startups do not need 100,000 API calls from day one. Exchange Rate API's pricing is designed to match your growth trajectory -- start free, then upgrade only when your usage demands it.

Why Startups Choose Exchange Rate API

• Free tier with real production features -- not a crippled trial with HTTP-only and one base currency
• Official SDKs -- ship faster with JavaScript, Python, PHP, or React integrations
• Any base currency on all plans -- price in GBP, JPY, BRL, or any of 160+ currencies
• 60-second rate updates -- accurate enough for real-time pricing and checkout
• Historical rates -- reconcile past transactions and build financial dashboards
• Simple Bearer auth -- one header, no OAuth complexity, instant API key
• Predictable costs -- flat monthly pricing with no per-request overages

Code Example: SaaS Pricing Page

Display your SaaS pricing in the visitor's local currency. This example fetches the rate and converts a USD price for display.

from exchange_rateapi import Client

client = Client("YOUR_API_KEY")

def localized_pricing(plans_usd, visitor_currency):
    """Convert SaaS plan prices to the visitor's local currency."""
    rate = client.get_rate("USD", visitor_currency)

    localized = []
    for plan in plans_usd:
        localized.append({
            "name": plan["name"],
            "price_local": round(plan["price"] * rate, 2),
            "currency": visitor_currency
        })
    return localized

# Define your SaaS plans in USD
plans = [
    {"name": "Starter", "price": 19},
    {"name": "Pro", "price": 49},
    {"name": "Enterprise", "price": 149},
]

# Visitor from the UK
uk_prices = localized_pricing(plans, "GBP")
for p in uk_prices:
    print(f"{p['name']}: {p['currency']} {p['price_local']}")

# Output:
# Starter: GBP 15.01
# Pro: GBP 38.71
# Enterprise: GBP 117.71

Cache the rate for 5-10 minutes on your pricing page to minimize API calls while keeping prices fresh. At checkout, fetch a live rate for the final conversion.