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WST to SLL exchange rate API

Tala to Leone · quoted 2026-10-03

8268.17

▼ +2.12% over 30D

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 30 days, WST/SLL traded between 7656.66 and 9066.50, averaged 8452.40 and fell 2.12%. 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 30D

7D30D6MYTD1Y5Y
WST/SLL over 30D: show the values
PointWST/SLL
2026-09-038447.62
2026-09-049066.50
2026-09-058585.82
2026-09-068444.67
2026-09-078461.11
2026-09-088469.05
2026-09-098461.97
2026-09-108447.76
2026-09-118436.54
2026-09-128384.54
2026-09-138408.50
2026-09-148429.38
2026-09-158411.21
2026-09-169031.27
2026-09-178395.97
2026-09-187656.66
2026-09-198339.18
2026-09-208362.90
2026-09-218404.09
2026-09-229010.87
2026-09-238387.22
2026-09-248342.31
2026-09-258337.14
2026-09-268351.15
2026-09-278344.72
2026-09-288351.16
2026-09-308926.32
2026-10-028340.12
2026-10-038268.17

High

9066.50

Low

7656.66

Average

8452.40

For developers

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.

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=WST&currencies=SLL"
JavaScript 
const response = await fetch("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=WST&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=WST&currencies=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&currencies=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.

Related pairs

SLL/WST · inverse 0.000121 WST/USD 0.35860WST/EUR 0.31866WST/GBP 0.27087WST/JPY 56.6085WST/CHF 0.29724WST/AUD 0.51557

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