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Old Zambian Kwacha (ZMK) to Old Sierra Leonean Leone (SLL)

Convert old Zambian kwachas to old Sierra Leonean leones at the live mid-market rate. Reverse: SLL to ZMK

The Old Zambian Kwacha is no longer in use

Old Zambian Kwacha (ZMK) was replaced by the Zambian Kwacha (ZMW) in 2013. For today’s money, convert ZMW to SLL.

The Old Sierra Leonean Leone is no longer in use

Old Sierra Leonean Leone (SLL) was replaced by the Sierra Leonean Leone (SLE) in 2022. For today’s money, convert ZMK to SLE.

1 Old Zambian Kwacha =

2.55 SLL 0.00% today

1 ZMK = 2.55348 SLL · 1 SLL = 0.391622 ZMK

Mid-market rate, updated 16:44 UTC. Paid plans update as often as every 60 seconds. Get ZMK→SLL rates via API

ZMK to SLL over the last year

2.522.54Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
2.5554
52-week low
2.5095
52-week average
2.5336
Change over the year
+1.37%

Conversion tables

ZMK to SLL
ZMK SLL
1 ZMK 2.55 SLL
10 ZMK 25.53 SLL
100 ZMK 255.35 SLL
1,000 ZMK 2,553.48 SLL
10,000 ZMK 25,534.82 SLL
50,000 ZMK 127,674.11 SLL
100,000 ZMK 255,348.22 SLL
SLL to ZMK
SLL ZMK
1 SLL 0.3916 ZMK
10 SLL 4 ZMK
100 SLL 39 ZMK
1,000 SLL 392 ZMK
10,000 SLL 3,916 ZMK
50,000 SLL 19,581 ZMK
100,000 SLL 39,162 ZMK

Get ZMK→SLL rates via API

The live rate, the rate on any past day or a whole range, for SLL and 170+ other currencies, as JSON. Free plan included. See the exchange rate API.

Get a free API key API documentation 
curl https://api.currencyapi.com/v3/latest \
  -G -d base_currency=ZMK -d currencies=SLL \
  -H "apikey: YOUR-API-KEY"

# the rate on a past day
curl https://api.currencyapi.com/v3/historical \
  -G -d base_currency=ZMK -d currencies=SLL \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

Related conversions

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Questions about ZMK to SLL

How much is 1 ZMK in SLL?

1 Old Zambian Kwacha is 2.55348 old Sierra Leonean leones at the mid-market rate of 4 October 2026, 16:44 UTC, and 1 SLL is 0.391622 ZMK.

What was the ZMK to SLL rate over the last year?

Over the last 52 weeks 1 ZMK ranged from 2.50954 to 2.55536 SLL, 2.53364 SLL on average.

Which exchange rate is this?

The mid-market rate: the midpoint between what currency markets pay and ask for ZMK/SLL, without the margin a bank or card issuer adds, so the rate you are charged is usually a little worse.