1. Currency converter
  2. OP to STD

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.

1 Optimism =

2,895.12 STD −3.47% today

1 OP = 2,895.12 STD · 1 STD = 0.00034541 OP

Mid-market rate, updated 14:01 UTC. Paid plans update as often as every 60 seconds. Get OP→STD rates via API

OP to STD over the last year

5,000.0010,000.0015,000.00Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
15,983.93
52-week low
1,758.25
52-week average
4,231.82
Change over the year
−80.92%

Conversion tables

OP to STD
OP STD
1 OP 2,895.12 STD
10 OP 28,951.23 STD
100 OP 289,512.27 STD
1,000 OP 2,895,122.69 STD
10,000 OP 28,951,226.89 STD
50,000 OP 144,756,134.45 STD
100,000 OP 289,512,268.89 STD
STD to OP
STD OP
1 STD 0.0003454 OP
10 STD 0.003454 OP
100 STD 0.03454 OP
1,000 STD 0.3454 OP
10,000 STD 3.45408500 OP
50,000 STD 17.27042500 OP
100,000 STD 34.54085000 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"

Related conversions

Popular Optimism conversions

Popular Old São Tomé Dobra conversions

Questions about OP to STD

How much is 1 OP in STD?

1 Optimism is 2,895.12 old São Tomé dobras at the mid-market rate of 4 October 2026, 14:01 UTC, and 1 STD is 0.00034541 OP.

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, 4,231.82 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.