SLL to WST exchange rate API
Leone to Tala · quoted 2026-10-03
0.000119
▼ +0.83% over YTD
1 SLL = 0.000119 WST · 1 WST = 8403.36 SLL · Get this rate via the API
1 SLL buys 0.000119 WST as of 2026-10-03, so 1 WST buys 8403.36 SLL. Over the year to date, SLL/WST traded between 0.000109 and 0.000131, averaged 0.000120 and fell 0.83%. The API holds daily SLL/WST 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/WST over YTD: show the values
| Point | SLL/WST |
|---|---|
| 2025-12-31 | 0.000120 |
| 2026-01-07 | 0.000121 |
| 2026-01-14 | 0.000120 |
| 2026-01-21 | 0.000119 |
| 2026-01-28 | 0.000118 |
| 2026-02-04 | 0.000117 |
| 2026-02-11 | 0.000117 |
| 2026-02-18 | 0.000117 |
| 2026-02-25 | 0.000118 |
| 2026-03-04 | 0.000118 |
| 2026-03-11 | 0.000118 |
| 2026-03-18 | 0.000118 |
| 2026-03-25 | 0.000119 |
| 2026-04-01 | 0.000119 |
| 2026-04-08 | 0.000119 |
| 2026-04-19 | 0.000129 |
| 2026-04-26 | 0.000129 |
| 2026-05-03 | 0.000128 |
| 2026-05-10 | 0.000128 |
| 2026-05-18 | 0.000129 |
| 2026-05-26 | 0.000118 |
| 2026-06-02 | 0.000109 |
| 2026-06-11 | 0.000119 |
| 2026-06-18 | 0.000118 |
| 2026-06-25 | 0.000120 |
| 2026-07-02 | 0.000131 |
| 2026-07-09 | 0.000119 |
| 2026-07-16 | 0.000118 |
| 2026-07-23 | 0.000118 |
| 2026-07-30 | 0.000119 |
| 2026-08-06 | 0.000118 |
| 2026-08-13 | 0.000115 |
| 2026-08-21 | 0.000118 |
| 2026-08-28 | 0.000117 |
| 2026-09-04 | 0.000110 |
| 2026-09-11 | 0.000118 |
| 2026-09-18 | 0.000130 |
| 2026-09-25 | 0.000119 |
High
0.000131
Low
0.000109
Average
0.000120
Get this rate via the API
One GET request returns the SLL/WST 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=WST"const response = await fetch("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=SLL¤cies=WST");
const data = await response.json();import requests
data = requests.get("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=SLL¤cies=WST").json()Replace YOUR_API_KEY with the key from your dashboard.
SLL/WST API questions
How do I get the SLL/WST exchange rate from an API?
Send one GET request to https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=SLL¤cies=WST, replacing YOUR_API_KEY with your own key. The JSON response carries the date and the latest SLL/WST rate in rates.WST.
How far back does SLL/WST historical data go?
Daily SLL/WST 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/WST 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.