SLL to BTN exchange rate API
Leone to Ngultrum · quoted 2026-10-02
0.004177
▲ +6.58% over YTD
1 SLL = 0.004177 BTN · 1 BTN = 239.4063 SLL · Get this rate via the API
1 SLL buys 0.004177 BTN as of 2026-10-02, so 1 BTN buys 239.4063 SLL. Over the year to date, SLL/BTN traded between 0.003844 and 0.004582, averaged 0.004146 and rose 6.58%. The API holds daily SLL/BTN 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.
SLL/BTN over YTD: show the values
| Point | SLL/BTN |
|---|---|
| 2025-12-31 | 0.003919 |
| 2026-01-07 | 0.003945 |
| 2026-01-14 | 0.003928 |
| 2026-01-21 | 0.003957 |
| 2026-01-28 | 0.004011 |
| 2026-02-04 | 0.003945 |
| 2026-02-11 | 0.003958 |
| 2026-02-18 | 0.003949 |
| 2026-02-25 | 0.003967 |
| 2026-03-04 | 0.004019 |
| 2026-03-11 | 0.004014 |
| 2026-03-18 | 0.004044 |
| 2026-03-25 | 0.004115 |
| 2026-04-01 | 0.004087 |
| 2026-04-08 | 0.004025 |
| 2026-04-19 | 0.004432 |
| 2026-04-26 | 0.004484 |
| 2026-05-03 | 0.004524 |
| 2026-05-10 | 0.004491 |
| 2026-05-18 | 0.004582 |
| 2026-05-26 | 0.004172 |
| 2026-06-02 | 0.003860 |
| 2026-06-11 | 0.004190 |
| 2026-06-18 | 0.004136 |
| 2026-06-25 | 0.004127 |
| 2026-07-02 | 0.004546 |
| 2026-07-09 | 0.004172 |
| 2026-07-16 | 0.004216 |
| 2026-07-23 | 0.004206 |
| 2026-07-30 | 0.004180 |
| 2026-08-06 | 0.004149 |
| 2026-08-13 | 0.004040 |
| 2026-08-21 | 0.004180 |
| 2026-08-28 | 0.004164 |
| 2026-09-04 | 0.003844 |
| 2026-09-11 | 0.004172 |
| 2026-09-18 | 0.004571 |
| 2026-09-25 | 0.004183 |
High
0.004582
Low
0.003844
Average
0.004146
Get this rate via the API
One GET request returns the SLL/BTN 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=SLL¤cies=BTN"const response = await fetch("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=SLL¤cies=BTN");
const data = await response.json();import requests
data = requests.get("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=SLL¤cies=BTN").json()Replace YOUR_API_KEY with the key from your dashboard.
SLL/BTN API questions
How do I get the SLL/BTN exchange rate from an API?
Send one GET request to https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=SLL¤cies=BTN, replacing YOUR_API_KEY with your own key. The JSON response carries the date and the latest SLL/BTN rate in rates.BTN.
How far back does SLL/BTN historical data go?
Daily SLL/BTN 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 SLL/BTN 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.