BTN to SLL exchange rate API

Ngultrum to Leone · quoted 2026-11-13

243.9117

▼ +0.00% over 7D

1 BTN = 243.9117 SLL · 1 SLL = 0.004100 BTN · Get this rate via the API

1 BTN buys 243.9117 SLL as of 2026-11-13, so 1 SLL buys 0.004100 BTN. Over the last 7 days, BTN/SLL traded between 243.9117 and 245.4003, averaged 244.6151 and fell 0.00%. 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 7D

Daily observations · gaps mean no published rate

Download CSV

BTN/SLL over 7D: show the values

Rates per 1 BTN. Missing rates are shown as a dash.
Date	SLL
2026-11-06	243.918043
2026-11-07	244.192102
2026-11-08	244.351086
2026-11-09	244.709252
2026-11-10	245.400328
2026-11-11	245.174796
2026-11-12	245.263556
2026-11-13	243.911706

High

245.4003

Low

243.9117

Average

244.6151

Statistics use all 8 daily observations in the selected period.

For developers

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.

Get a free API key Read the API docs

cURL

curl -X GET "https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=BTN&currencies=SLL"

JavaScript

const response = await fetch("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=BTN&currencies=SLL");
const data = await response.json();

Python

import requests

data = requests.get("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=BTN&currencies=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&currencies=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.

SLL/BTN · inverse 0.004100 BTN/USD 0.01061 BTN/EUR 0.009603 BTN/GBP 0.008010 BTN/JPY 1.6978 BTN/CHF 0.008877 BTN/AUD 0.01562

Put these rates in your application

One endpoint, JSON responses, 160+ currencies and history back to 1999. Start on the free plan.

Get a free API key Read the docs