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Old São Tomé Dobra (STD) to Romanian Leu (RON)

Convert old São Tomé dobras to Romanian lei at the live mid-market rate. Reverse: RON 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 RON.

1 Old São Tomé Dobra =

0.0002174 RON +0.61% today

1 STD = 0.0002174 RON · 1 RON = 4,599.88 STD

Mid-market rate, updated 14:00 UTC. Paid plans update as often as every 60 seconds. Get STD→RON rates via API

STD to RON over the last year

0.0002050.000210.000215Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.00021740
52-week low
0.00020429
52-week average
0.00020887
Change over the year
+5.10%

Conversion tables

STD to RON
STD RON
1 STD 0.0002174 RON
10 STD 0.002174 RON
100 STD 0.02174 RON
1,000 STD 0.2174 RON
10,000 STD 2.17 RON
50,000 STD 10.87 RON
100,000 STD 21.74 RON
RON to STD
RON STD
1 RON 4,599.88 STD
10 RON 45,998.78 STD
100 RON 459,987.82 STD
1,000 RON 4,599,878.23 STD
10,000 RON 45,998,782.33 STD
50,000 RON 229,993,911.64 STD
100,000 RON 459,987,823.27 STD

Get STD→RON rates via API

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

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Questions about STD to RON

How much is 1 STD in RON?

1 Old São Tomé Dobra is 0.0002174 Romanian lei at the mid-market rate of 4 October 2026, 14:00 UTC, and 1 RON is 4,599.88 STD.

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

Over the last 52 weeks 1 STD ranged from 0.00020429 to 0.0002174 RON, 0.00020887 RON on average.

Which exchange rate is this?

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