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SLL to PLN exchange rate API

Leone to Zloty · quoted 2026-10-03

0.000169

▲ +8.33% over YTD

1 SLL = 0.000169 PLN · 1 PLN = 5917.16 SLL · Get this rate via the API

1 SLL buys 0.000169 PLN as of 2026-10-03, so 1 PLN buys 5917.16 SLL. Over the year to date, SLL/PLN traded between 0.000147 and 0.000181, averaged 0.000162 and rose 8.33%. The API holds daily SLL/PLN 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/PLN over YTD

SLL/PLN over YTD: show the values
PointSLL/PLN
2025-12-310.000156
2026-01-070.000157
2026-01-140.000157
2026-01-210.000156
2026-01-280.000153
2026-02-040.000155
2026-02-110.000154
2026-02-180.000155
2026-02-250.000156
2026-03-040.000159
2026-03-110.000160
2026-03-180.000162
2026-03-250.000161
2026-04-010.000161
2026-04-080.000158
2026-04-190.000171
2026-04-260.000172
2026-05-030.000172
2026-05-100.000171
2026-05-180.000173
2026-05-260.000159
2026-06-020.000147
2026-06-110.000161
2026-06-180.000162
2026-06-250.000165
2026-07-020.000179
2026-07-090.000164
2026-07-160.000165
2026-07-230.000165
2026-07-300.000164
2026-08-060.000162
2026-08-130.000158
2026-08-210.000160
2026-08-280.000162
2026-09-040.000151
2026-09-110.000162
2026-09-180.000181
2026-09-250.000167

High

0.000181

Low

0.000147

Average

0.000162

For developers

Get this rate via the API

One GET request returns the SLL/PLN 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=SLL&currencies=PLN"
JavaScript
const response = await fetch("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=SLL&currencies=PLN");
const data = await response.json();
Python
import requests

data = requests.get("https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=SLL&currencies=PLN").json()

Replace YOUR_API_KEY with the key from your dashboard.

SLL/PLN API questions

How do I get the SLL/PLN exchange rate from an API?

Send one GET request to https://api.fxfeed.io/v2/latest?api_key=YOUR_API_KEY&base=SLL&currencies=PLN, replacing YOUR_API_KEY with your own key. The JSON response carries the date and the latest SLL/PLN rate in rates.PLN.

How far back does SLL/PLN historical data go?

Daily SLL/PLN 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/PLN 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.