Convert 1 Optimism (OP) to Old São Tomé Dobra (STD)

Convert Optimism to old São Tomé dobras at the live mid-market rate. Reverse: STD to OP

The Old São Tomé Dobra is no longer in use

Old São Tomé Dobra (STD) was replaced by the São Tomé and Príncipe Dobra (STN) in 2018. For today’s money, convert OP to STN.

Amount

From

1 Optimism =

2,922.54 STD −2.55% today

1 OP = 2,922.54 STD · 1 STD = 0.00034217 OP

Mid-market rate, updated 09:23 UTC. Paid plans update as often as every 60 seconds. Get OP→STD rates via API

OP to STD over the last year

52-week high: 15,983.93
52-week low: 1,758.25
52-week average: 4,231.90
Change over the year: −80.74%

Conversion tables

OP to STD
OP	STD
1 OP	2,922.54 STD
10 OP	29,225.42 STD
100 OP	292,254.24 STD
1,000 OP	2,922,542.40 STD
10,000 OP	29,225,424.04 STD
50,000 OP	146,127,120.21 STD
100,000 OP	292,254,240.43 STD

STD to OP
STD	OP
1 STD	0.0003422 OP
10 STD	0.003422 OP
100 STD	0.03422 OP
1,000 STD	0.3422 OP
10,000 STD	3.42167800 OP
50,000 STD	17.10839000 OP
100,000 STD	34.21678000 OP

Get OP→STD rates via API

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

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Questions about OP to STD

How much is 1 OP in STD?

1 Optimism is 2,922.54 old São Tomé dobras at the mid-market rate of 4 October 2026, 09:23 UTC, when 1 OP = 2,922.54 STD.

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

Over the last 52 weeks 1 OP ranged from 1,758.25 to 15,983.93 STD, 4,231.90 STD on average.

Which exchange rate is this?

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