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SLL to CZK exchange rate API

Leone to Czech Koruna · quoted 2026-10-01

0.000879

▼ +2.33% over YTD

1 SLL = 0.000879 CZK · 1 CZK = 1137.66 SLL · Get this rate via the API

1 SLL buys 0.000879 CZK as of 2026-10-01, so 1 CZK buys 1137.66 SLL. Over the year to date, SLL/CZK traded between 0.000844 and 0.001013, averaged 0.000922 and fell 2.33%. The API holds daily SLL/CZK 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/CZK over YTD

SLL/CZK over YTD: show the values
PointSLL/CZK
2025-12-310.000900
2026-01-070.000909
2026-01-140.000906
2026-01-210.000901
2026-01-280.000889
2026-02-040.000899
2026-02-110.000891
2026-02-180.000892
2026-02-250.000897
2026-03-040.000912
2026-03-110.000919
2026-03-180.000931
2026-03-250.000923
2026-04-010.000922
2026-04-080.000906
2026-04-190.000985
2026-04-260.000991
2026-05-030.000990
2026-05-100.000984
2026-05-180.000995
2026-05-260.000912
2026-06-020.000844
2026-06-110.000918
2026-06-180.000924
2026-06-250.000935
2026-07-020.001013
2026-07-090.000926
2026-07-160.000923
2026-07-230.000925
2026-07-300.000920
2026-08-060.000915
2026-08-130.000889
2026-08-210.000900
2026-08-280.000905
2026-09-040.000846
2026-09-110.000912
2026-09-180.001012
2026-09-250.000931

High

0.001013

Low

0.000844

Average

0.000922

For developers

Get this rate via the API

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

Replace YOUR_API_KEY with the key from your dashboard.

SLL/CZK API questions

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

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

How far back does SLL/CZK historical data go?

Daily SLL/CZK 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/CZK 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.