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São Tomé and Príncipe Dobra (STN) to Optimism (OP)

Convert São Tomé and Príncipe dobras to Optimism at the live mid-market rate. Reverse: OP to STN

1 São Tomé and Príncipe Dobra =

0.3425 OP +2.73% today

1 STN = 0.34254 OP · 1 OP = 2.91937 STN

Mid-market rate, updated 09:35 UTC. Paid plans update as often as every 60 seconds. Get STN→OP rates via API

STN to OP over the last year

0.200.400.60Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.56875
52-week low
0.06256
52-week average
0.32316
Change over the year
+419.68%

Conversion tables

STN to OP
STN OP
1 STN 0.3425 OP
10 STN 3.42539662 OP
100 STN 34.25396622 OP
1,000 STN 342.53966220 OP
10,000 STN 3,425.39662200 OP
50,000 STN 17,126.98311000 OP
100,000 STN 34,253.96622000 OP
OP to STN
OP STN
1 OP 2.92 STN
10 OP 29.19 STN
100 OP 291.94 STN
1,000 OP 2,919.37 STN
10,000 OP 29,193.70 STN
50,000 OP 145,968.50 STN
100,000 OP 291,937.00 STN

Get STN→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=STN -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=STN -d currencies=OP \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about STN to OP

How much is 1 STN in OP?

1 São Tomé and Príncipe Dobra is 0.34254 Optimism at the mid-market rate of 4 October 2026, 09:35 UTC, and 1 OP is 2.91937 STN.

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

Over the last 52 weeks 1 STN ranged from 0.0625628 to 0.568746 OP, 0.323159 OP on average.

Which exchange rate is this?

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