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Optimism (OP) to Old Zambian Kwacha (ZMK)

Convert Optimism to old Zambian kwachas at the live mid-market rate. Reverse: ZMK to OP

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 OP to ZMW.

1 Optimism =

1,213 ZMK −1.34% today

1 OP = 1,212.92 ZMK · 1 ZMK = 0.00082445 OP

Mid-market rate, updated 07:11 UTC. Paid plans update as often as every 60 seconds. Get OP→ZMK rates via API

OP to ZMK over the last year

2,000.004,000.006,000.00Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
6,820.04
52-week low
739.60
52-week average
1,794.90
Change over the year
−81.39%

Conversion tables

OP to ZMK
OP ZMK
1 OP 1,213 ZMK
10 OP 12,129 ZMK
100 OP 121,292 ZMK
1,000 OP 1,212,924 ZMK
10,000 OP 12,129,236 ZMK
50,000 OP 60,646,178 ZMK
100,000 OP 121,292,356 ZMK
ZMK to OP
ZMK OP
1 ZMK 0.0008245 OP
10 ZMK 0.008245 OP
100 ZMK 0.08245 OP
1,000 ZMK 0.8245 OP
10,000 ZMK 8.24454300 OP
50,000 ZMK 41.22271500 OP
100,000 ZMK 82.44543000 OP

Get OP→ZMK rates via API

The live rate, the rate on any past day or a whole range, for ZMK 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=OP -d currencies=ZMK \
  -H "apikey: YOUR-API-KEY"

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

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Questions about OP to ZMK

How much is 1 OP in ZMK?

1 Optimism is 1,212.92 old Zambian kwachas at the mid-market rate of 4 October 2026, 07:11 UTC, and 1 ZMK is 0.00082445 OP.

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

Over the last 52 weeks 1 OP ranged from 739.599 to 6,820.04 ZMK, 1,794.90 ZMK on average.

Which exchange rate is this?

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