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

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

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 STN to OP.

Amount

From

1 Old São Tomé Dobra =

0.0003422 OP +2.62% today

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

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

STD to OP over the last year

52-week high: 0.00056875
52-week low: 0.00006256
52-week average: 0.00032317
Change over the year: +419.12%

Conversion tables

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

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

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

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Questions about STD to OP

How much is 1 STD in OP?

1 Old São Tomé Dobra is 0.0003422 Optimism at the mid-market rate of 4 October 2026, 09:23 UTC, when 1 STD = 0.00034217 OP.

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

Over the last 52 weeks 1 STD ranged from 0.00006256 to 0.00056875 OP, 0.00032317 OP on average.

Which exchange rate is this?

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