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BTN to SLL exchange rate API

Ngultrum to Leone · quoted 2026-10-23

241.7637

▼ +10.42% over 2Y

1 BTN = 241.7637 SLL · 1 SLL = 0.004136 BTN · Get this rate via the API

1 BTN buys 241.7637 SLL as of 2026-10-23, so 1 SLL buys 0.004136 BTN. Over the last 2 years, BTN/SLL traded between 218.1985 and 271.7965, averaged 254.4453 and fell 10.42%. 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.

Chart sampled every 7 observations · table and exports keep every daily rate

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BTN/SLL over 2Y: show the values
Rates per 1 BTN. Missing rates are shown as a dash.
DateSLL
2024-10-23269.886055
2024-10-24270.115184
2024-10-25270.53597
2024-10-26270.151195
2024-10-27270.159066
2024-10-28270.130376
2024-10-29269.965631
2024-10-30270.024354
2024-10-31271.790905
2024-11-01271.796492
2024-11-02269.771877
2024-11-03269.82554
2024-11-04270.569783
2024-11-05270.06293
2024-11-06270.207909
2024-11-07268.664301
2024-11-08269.967744
2024-11-09269.335641
2024-11-10269.306621
2024-11-11269.561038
2024-11-12269.489176
2024-11-13270.160264
2024-11-14267.467986
2024-11-15269.144928
2024-11-16268.319487
2024-11-17268.322568
2024-11-18267.67226
2024-11-19268.509422
2024-11-20267.796793
2024-11-21267.462488
2024-11-22268.869148
2024-11-23268.849299
2024-11-24268.836254
2024-11-25269.161458
2024-11-26269.112151
2024-11-27269.475697
2024-11-28269.415432
2024-11-29269.129089
2024-11-30269.050649
2024-12-01269.142289
2024-12-02268.994368
2024-12-03268.283345
2024-12-04268.570791
2024-12-05268.460943
2024-12-06268.625467
2024-12-07269.114645
2024-12-08269.0263
2024-12-09268.605795
2024-12-10268.096349
2024-12-11268.004327
2024-12-12268.619723
2024-12-13267.988372
2024-12-14268.863643
2024-12-15268.956602
2024-12-16268.176271
2024-12-17267.994
2024-12-18267.898876
2024-12-19267.453958
2024-12-20267.325214
2024-12-21268.049826
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2024-12-23267.66464
2024-12-24267.264848
2024-12-25266.694272
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2024-12-27267.015487
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2025-06-07255.436643
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2026-07-26250.93494
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2026-07-28253.056428
2026-07-29252.861043
2026-07-30239.200728
2026-07-31239.634677
2026-08-01239.992035
2026-08-02239.916968
2026-08-03240.63784
2026-08-04240.026375
2026-08-05251.398578
2026-08-06240.982094
2026-08-07239.818913
2026-08-08242.632975
2026-08-09240.071207
2026-08-10240.116067
2026-08-11239.703589
2026-08-12239.284581
2026-08-13247.513605
2026-08-14240.128573
2026-08-15239.697129
2026-08-16239.768532
2026-08-17239.698168
2026-08-18239.638581
2026-08-20239.616235
2026-08-21239.201506
2026-08-22242.633007
2026-08-23255.84538
2026-08-24239.023109
2026-08-25238.810787
2026-08-26239.989099
2026-08-27239.604062
2026-08-28240.110802
2026-08-29245.62361
2026-08-30240.340019
2026-08-31239.898576
2026-09-01241.495042
2026-09-02241.369711
2026-09-03242.840511
2026-09-04260.131761
2026-09-05247.13153
2026-09-06242.562709
2026-09-07242.644851
2026-09-08242.128952
2026-09-09241.462073
2026-09-10240.58216
2026-09-11239.65656
2026-09-12239.952979
2026-09-13240.023097
2026-09-14239.772407
2026-09-15239.265223
2026-09-16256.916317
2026-09-17239.324893
2026-09-18218.726972
2026-09-19238.907189
2026-09-20239.020501
2026-09-21239.479019
2026-09-22257.285869
2026-09-23239.829337
2026-09-24239.028905
2026-09-25239.022264
2026-09-26239.562961
2026-09-27239.427653
2026-09-28238.995672
2026-09-30256.724875
2026-10-02239.35135
2026-10-03239.705781
2026-10-05238.949235
2026-10-06239.113825
2026-10-07255.614161
2026-10-08238.019918
2026-10-09237.475036
2026-10-10237.737578
2026-10-11237.403098
2026-10-12239.814827
2026-10-13240.512467
2026-10-14241.711336
2026-10-15256.121863
2026-10-16242.473544
2026-10-17241.809517
2026-10-18241.661831
2026-10-19242.203209
2026-10-20242.189108
2026-10-21242.646952
2026-10-22242.926653
2026-10-23241.763748

High

271.7965

Low

218.1985

Average

254.4453

Statistics use all 714 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.

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.

Put these rates in your application

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