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Old São Tomé Dobra (STD) to Arbitrum (ARB)

Convert old São Tomé dobras to Arbitrums at the live mid-market rate. Reverse: ARB 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 ARB.

1 Old São Tomé Dobra =

0.0002286 ARB +1.30% today

1 STD = 0.00022855 ARB · 1 ARB = 4,375.37 STD

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

STD to ARB over the last year

0.00020.00040.0006Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.00064376
52-week low
0.00010382
52-week average
0.00037442
Change over the year
+107.94%

Conversion tables

STD to ARB
STD ARB
1 STD 0.0002286 ARB
10 STD 0.002286 ARB
100 STD 0.02286 ARB
1,000 STD 0.2286 ARB
10,000 STD 2.28552100 ARB
50,000 STD 11.42760500 ARB
100,000 STD 22.85521000 ARB
ARB to STD
ARB STD
1 ARB 4,375.37 STD
10 ARB 43,753.70 STD
100 ARB 437,536.99 STD
1,000 ARB 4,375,369.85 STD
10,000 ARB 43,753,698.52 STD
50,000 ARB 218,768,492.61 STD
100,000 ARB 437,536,985.23 STD

Get STD→ARB rates via API

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

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Questions about STD to ARB

How much is 1 STD in ARB?

1 Old São Tomé Dobra is 0.00022855 Arbitrums at the mid-market rate of 4 October 2026, 14:01 UTC, and 1 ARB is 4,375.37 STD.

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

Over the last 52 weeks 1 STD ranged from 0.00010382 to 0.00064376 ARB, 0.00037442 ARB on average.

Which exchange rate is this?

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