BTN to SLL exchange rate API
Ngultrum to Leone · quoted 2026-10-02
239.3513
▼ +0.84% over 30D
1 BTN = 239.3513 SLL · 1 SLL = 0.004178 BTN · Get this rate via the API
1 BTN buys 239.3513 SLL as of 2026-10-02, so 1 SLL buys 0.004178 BTN. Over the last 30 days, BTN/SLL traded between 218.7270 and 260.1318, averaged 242.1079 and fell 0.84%. The API holds daily BTN/SLL rates from 2024-08-24 — 2 years of history — so any past day, or a whole series, is one request away.
Converting an invoice? Convert an amount on a specific date.
BTN/SLL over 30D: show the values
| Point | BTN/SLL |
|---|---|
| 2026-09-02 | 241.3697 |
| 2026-09-03 | 242.8405 |
| 2026-09-04 | 260.1318 |
| 2026-09-05 | 247.1315 |
| 2026-09-06 | 242.5627 |
| 2026-09-07 | 242.6449 |
| 2026-09-08 | 242.1290 |
| 2026-09-09 | 241.4621 |
| 2026-09-10 | 240.5822 |
| 2026-09-11 | 239.6566 |
| 2026-09-12 | 239.9530 |
| 2026-09-13 | 240.0231 |
| 2026-09-14 | 239.7724 |
| 2026-09-15 | 239.2652 |
| 2026-09-16 | 256.9163 |
| 2026-09-17 | 239.3249 |
| 2026-09-18 | 218.7270 |
| 2026-09-19 | 238.9072 |
| 2026-09-20 | 239.0205 |
| 2026-09-21 | 239.4790 |
| 2026-09-22 | 257.2859 |
| 2026-09-23 | 239.8293 |
| 2026-09-24 | 239.0289 |
| 2026-09-25 | 239.0223 |
| 2026-09-26 | 239.5630 |
| 2026-09-27 | 239.4277 |
| 2026-09-28 | 238.9957 |
| 2026-09-30 | 256.7249 |
High
260.1318
Low
218.7270
Average
242.1079
Get this rate via the API
One GET request returns the BTN/SLL rate as JSON. The free plan includes 1,000 requests a month, with no credit card required.
curl -X GET "https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=BTN¤cies=SLL"const response = await fetch("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=BTN¤cies=SLL");
const data = await response.json();import requests
data = requests.get("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=BTN¤cies=SLL").json()Replace YOUR_API_KEY with the key from your dashboard.
BTN/SLL API questions
How do I get the BTN/SLL exchange rate from an API?
Send one GET request to https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=BTN¤cies=SLL, replacing YOUR_API_KEY with your own key. The JSON response carries the date and the latest BTN/SLL rate in rates.SLL.
How far back does BTN/SLL historical data go?
Daily BTN/SLL rates are available from 2024-08-24. Request one day with the /historical endpoint and a date, or a range of days with /timeseries.
Is there a free BTN/SLL exchange rate API?
Yes. The free plan includes 1,000 requests a month, with no credit card required; paid plans raise the limit.
Put these rates in your application
One endpoint, JSON responses, 160+ currencies and history back to 1999. Start on the free plan.