Exchange rates for billing, reporting, and checkout
One HTTP endpoint. Pick any supported base currency. We store the latest rates, rebase on the fly, and authenticate every call so you can ship pricing logic without babysitting upstream APIs.
Why teams choose this API
Simple integration, global coverage, and data you can trust for billing, reporting, and checkout.
Easy API
One endpoint to learn and monitor. Every response is JSON—no XML, no vendor-specific parsers—so you can ship in any stack.
Developer focused
Clear documentation, an exceptional uptime record, and support that helps when you are debugging production—not generic ticket churn.
Global exchange rates
165 major currencies used in 200 countries—one integration for truly international products.
Super fast
Typical responses in about 100 ms, so dashboards, pricing engines, and checkout flows stay responsive under load.
Accurate conversions
Our currency API draws on multiple sources so FX data stays stable and reliable—less noise, fewer surprises when you reconcile or display live amounts.
HTTP API
One GET. JSON in milliseconds.
GET /api/rates/latest returns the latest rates.
- ✓Fast response times
- ✓Reliable uptime record
- ✓Greate developer experience
Example
Replace the
API_KEY with your own.curl -s \ -H "Authorization: Bearer $API_KEY" \ "https://openexchangerate.dev/api/rates/latest?base=USD"
Pricing that scales with call volume
We keep tiers simple: self-serve for builders, invoiced plans when you need guarantees.
Developer
Prototypes, internal tools, and early customers.
Free
Generous request ceiling for non-production workloads.
- Shared infrastructure
- Community support
- Daily rate refresh
Popular
Business
Production apps with steady traffic and SLAs.
Custom
Metered billing or flat rate—your finance team decides.
- Higher rate limits
- Priority email support
- Optional dedicated database
Enterprise
Regulated industries with custom needs.
Let's scope it
Security reviews, DPAs, and bespoke data pipelines.
- Custom SLAs
- SSO & audit logs
- Solution engineering
Ready to wire rates into your stack?
Setting up takes about 5 minutes, due to our simple api design. Start retrieving conversion rates today.
Start integrating