WST to SLL exchange rate API

Tala to Leone · quoted 2026-10-03

8268.17

▼ +0.53% over 1Y

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 year, WST/SLL traded between 7611.90 and 8973.42, averaged 8302.86 and fell 0.53%. 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 1Y

7D 30D 6M YTD 1Y 5Y

WST/SLL over 1Y: show the values

Point	WST/SLL
2025-10-03	8312.33
2025-10-10	8275.18
2025-10-17	8187.87
2025-10-24	8203.85
2025-10-31	8166.59
2025-11-07	8159.47
2025-11-14	8136.96
2025-11-21	8163.78
2025-11-28	8185.52
2025-12-05	8241.53
2025-12-13	8272.44
2025-12-20	8224.50
2025-12-27	8273.51
2026-01-03	8248.46
2026-01-10	8193.37
2026-01-17	8184.07
2026-01-24	8290.44
2026-01-31	8973.42
2026-02-07	8376.83
2026-02-14	8424.84
2026-02-21	8447.47
2026-02-28	8440.96
2026-03-07	8712.30
2026-03-14	8372.30
2026-03-21	8365.77
2026-03-28	7611.90
2026-04-04	8281.92
2026-04-15	7743.10
2026-04-22	7725.22
2026-04-29	7756.81
2026-05-06	7780.59
2026-05-14	8523.92
2026-05-21	8517.26
2026-05-29	8534.23
2026-06-05	8465.21
2026-06-14	8393.05
2026-06-21	8366.57
2026-06-28	8304.27
2026-07-05	8295.04
2026-07-12	8352.89
2026-07-19	8393.18
2026-07-26	8839.99
2026-08-02	8393.98
2026-08-09	8380.35
2026-08-16	8393.70
2026-08-24	8458.90
2026-08-31	8489.07
2026-09-07	8461.11
2026-09-14	8429.38
2026-09-21	8404.09
2026-09-28	8351.16

High

8973.42

Low

7611.90

Average

8302.86

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.

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