- DatedEvery rate carries the day it was published. If it’s yesterday’s, we say so.
- SourcedECB and other central banks, via Frankfurter, linked beside every number.
- FreeConverter, ten years of history, a JSON API and embeds. Nothing to sell you.
South-East Asia
Free JSON API
GET /api/latest?base=USD"es=SGD,MYR GET /api/convert?amount=100&from=USD&to=SGD GET /api/series?from=USD&to=SGD&years=10 GET /api/averages?from=USD&to=SGD&period=month&format=csv
Try it without a key (per-IP limits); use a free API key for production. CORS enabled. Embeddable converter for your site. See /api for keys, limits and the embed snippet.