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SLL to PLN exchange rate API

Leone to Zloty · quoted 2026-10-03

0.000169

▲ +4.32% over 30D

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 last 30 days, SLL/PLN traded between 0.000151 and 0.000181, averaged 0.000163 and rose 4.32%. 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 30D

SLL/PLN over 30D: show the values
PointSLL/PLN
2026-09-030.000162
2026-09-040.000151
2026-09-050.000159
2026-09-060.000162
2026-09-070.000161
2026-09-080.000162
2026-09-090.000161
2026-09-100.000162
2026-09-110.000162
2026-09-120.000162
2026-09-130.000162
2026-09-140.000163
2026-09-150.000164
2026-09-160.000152
2026-09-170.000165
2026-09-180.000181
2026-09-190.000165
2026-09-200.000165
2026-09-210.000165
2026-09-220.000153
2026-09-230.000167
2026-09-240.000168
2026-09-250.000167
2026-09-260.000167
2026-09-270.000167
2026-09-280.000167
2026-09-300.000156
2026-10-020.000169

High

0.000181

Low

0.000151

Average

0.000163

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.