Convert 100 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.

Amount

From

100 Optimism =

119,640 ZMK −2.69% today

1 OP = 1,196.40 ZMK · 1 ZMK = 0.00083584 OP

Mid-market rate, updated 14:18 UTC. Paid plans update as often as every 60 seconds. Get OP→ZMK rates via API

OP to ZMK over the last year

52-week high: 6,820.04
52-week low: 739.60
52-week average: 1,794.85
Change over the year: −81.64%

Conversion tables

OP to ZMK
OP	ZMK
1 OP	1,196 ZMK
10 OP	11,964 ZMK
100 OP	119,640 ZMK
1,000 OP	1,196,402 ZMK
10,000 OP	11,964,015 ZMK
50,000 OP	59,820,076 ZMK
100,000 OP	119,640,152 ZMK

ZMK to OP
ZMK	OP
1 ZMK	0.0008358 OP
10 ZMK	0.008358 OP
100 ZMK	0.08358 OP
1,000 ZMK	0.8358 OP
10,000 ZMK	8.35839800 OP
50,000 ZMK	41.79199000 OP
100,000 ZMK	83.58398000 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 100 OP in ZMK?

100 Optimism is 119,640 old Zambian kwachas at the mid-market rate of 4 October 2026, 14:18 UTC, when 1 OP = 1,196.40 ZMK.

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, 1,794.85 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.