Convert 1 Iranian Rial (IRR) to Old São Tomé Dobra (STD)

Convert Iranian rials to old São Tomé dobras at the live mid-market rate. Reverse: STD to IRR

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 IRR to STN.

Amount

From

1 Iranian Rial =

0.01252 STD −0.67% today

1 IRR = 0.0125201 STD · 1 STD = 79.8715 IRR

Mid-market rate, updated 09:46 UTC. Paid plans update as often as every 60 seconds. Get IRR→STD rates via API

IRR to STD over the last year

52-week high: 0.512117
52-week low: 0.012485
52-week average: 0.141735
Change over the year: −97.49%

Conversion tables

IRR to STD
IRR	STD
1 IRR	0.01252 STD
10 IRR	0.1252 STD
100 IRR	1.25 STD
1,000 IRR	12.52 STD
10,000 IRR	125.20 STD
50,000 IRR	626.01 STD
100,000 IRR	1,252.01 STD

STD to IRR
STD	IRR
1 STD	80 IRR
10 STD	799 IRR
100 STD	7,987 IRR
1,000 STD	79,871 IRR
10,000 STD	798,715 IRR
50,000 STD	3,993,574 IRR
100,000 STD	7,987,149 IRR

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

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Questions about IRR to STD

How much is 1 IRR in STD?

1 Iranian Rial is 0.01252 old São Tomé dobras at the mid-market rate of 4 October 2026, 09:46 UTC, when 1 IRR = 0.0125201 STD.

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

Over the last 52 weeks 1 IRR ranged from 0.0124851 to 0.512117 STD, 0.141735 STD on average.

Which exchange rate is this?

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