Convert 100 Old Zambian Kwacha (ZMK) to Optimism (OP)

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

Amount

From

100 old Zambian kwachas =

0.08316 OP +2.24% today

1 ZMK = 0.00083162 OP · 1 OP = 1,202.47 ZMK

Mid-market rate, updated 10:13 UTC. Paid plans update as often as every 60 seconds. Get ZMK→OP rates via API

ZMK to OP over the last year

52-week high: 0.00135208
52-week low: 0.00014663
52-week average: 0.00076490
Change over the year: +441.98%

Conversion tables

ZMK to OP
ZMK	OP
1 ZMK	0.0008316 OP
10 ZMK	0.008316 OP
100 ZMK	0.08316 OP
1,000 ZMK	0.8316 OP
10,000 ZMK	8.31621200 OP
50,000 ZMK	41.58106000 OP
100,000 ZMK	83.16212000 OP

OP to ZMK
OP	ZMK
1 OP	1,202 ZMK
10 OP	12,025 ZMK
100 OP	120,247 ZMK
1,000 OP	1,202,471 ZMK
10,000 OP	12,024,705 ZMK
50,000 OP	60,123,526 ZMK
100,000 OP	120,247,052 ZMK

Get ZMK→OP rates via API

The live rate, the rate on any past day or a whole range, for OP 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=OP \
  -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=OP \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about ZMK to OP

How much is 100 ZMK in OP?

100 old Zambian kwachas is 0.08316 Optimism at the mid-market rate of 4 October 2026, 10:13 UTC, when 1 ZMK = 0.00083162 OP.

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

Over the last 52 weeks 1 ZMK ranged from 0.00014663 to 0.00135208 OP, 0.0007649 OP on average.

Which exchange rate is this?

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