WST to SLL exchange rate API
Tala to Leone · quoted 2026-10-03
8268.17
▼ +1.47% over 5Y
1 WST = 8268.17 SLL · 1 SLL = 0.000121 WST · Get this rate via the API
1 WST buys 8268.17 SLL as of 2026-10-03, so 1 SLL buys 0.000121 WST. Over the last 5 years, WST/SLL traded between 7719.89 and 8475.60, averaged 8164.43 and fell 1.47%. The API holds daily WST/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.
WST/SLL over 5Y: show the values
| Point | WST/SLL |
|---|---|
| 2024-08-24 | 8391.11 |
| 2024-10-07 | 8014.15 |
| 2024-11-06 | 8263.03 |
| 2024-12-06 | 8179.82 |
| 2025-01-05 | 7719.89 |
| 2025-02-04 | 7784.42 |
| 2025-03-06 | 8111.80 |
| 2025-04-06 | 8142.32 |
| 2025-05-06 | 7952.40 |
| 2025-06-07 | 7973.18 |
| 2025-07-07 | 7960.03 |
| 2025-08-06 | 8115.15 |
| 2025-09-05 | 7887.44 |
| 2025-10-06 | 8277.63 |
| 2025-11-05 | 8127.02 |
| 2025-12-05 | 8241.53 |
| 2026-01-05 | 8238.68 |
| 2026-02-04 | 8475.60 |
| 2026-03-06 | 8437.47 |
| 2026-04-05 | 8360.52 |
| 2026-05-09 | 7754.73 |
| 2026-06-12 | 8398.94 |
| 2026-07-12 | 8352.89 |
| 2026-08-11 | 8410.81 |
| 2026-09-11 | 8436.54 |
High
8475.60
Low
7719.89
Average
8164.43
Get this rate via the API
One GET request returns the WST/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=WST¤cies=SLL"const response = await fetch("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=WST¤cies=SLL");
const data = await response.json();import requests
data = requests.get("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=WST¤cies=SLL").json()Replace YOUR_API_KEY with the key from your dashboard.
WST/SLL API questions
How do I get the WST/SLL exchange rate from an API?
Send one GET request to https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=WST¤cies=SLL, replacing YOUR_API_KEY with your own key. The JSON response carries the date and the latest WST/SLL rate in rates.SLL.
How far back does WST/SLL historical data go?
Daily WST/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 WST/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.