← Finance & Currency

Period Comparison

GET /compare

Compare a currency pair's current rate against its rate from yesterday, 1 week ago, 1 month ago, 3 months ago, and 1 year ago, with percentage change for each period. Gives instant context about whether a currency is trending up or down over different timeframes. Perfect for currency converter apps that want to show users if now is a good or bad time to exchange.

Parameters

base required

Base currency

target required

Target currency

Example Requests

Basic usage
curl "https://nordapi.ee/api/v1/compare?base=EUR&target=USD"
EUR/USD period comparison
curl "https://nordapi.ee/api/v1/compare?base=EUR&target=USD"
GBP/NOK period comparison
curl "https://nordapi.ee/api/v1/compare?base=GBP&target=NOK"
USD/SEK period comparison
curl "https://nordapi.ee/api/v1/compare?base=USD&target=SEK"

Live Response 

{
  "base": "EUR",
  "comparisons": {
    "1_month_ago": null,
    "1_week_ago": {
      "change": 0.0008,
      "change_pct": 0.06946253364591473,
      "date": "2026-03-29",
      "rate": 1.1517
    },
    "1_year_ago": null,
    "3_months_ago": null,
    "today": {
      "change": 0.0,
      "change_pct": 0.0,
      "date": "2026-04-05",
      "rate": 1.1525
    },
    "yesterday": {
      "change": 0.0,
      "change_pct": 0.0,
      "date": "2026-04-04",
      "rate": 1.1525
    }
  },
  "success": true,
  "target": "USD"
}

Example Response

{"success":true,"comparisons":{"today":{"rate":1.1555},"yesterday":{"rate":1.1489,"change_pct":0.57}}}
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