Convert 1 Old Sierra Leonean Leone (SLL) to Omani Rial (OMR)

Convert old Sierra Leonean leones to Omani rials at the live mid-market rate. Reverse: OMR to SLL

The Old Sierra Leonean Leone is no longer in use

Old Sierra Leonean Leone (SLL) was replaced by the Sierra Leonean Leone (SLE) in 2022. For today’s money, convert SLE to OMR.

Amount

From

1 Old Sierra Leonean Leone =

0.00001675 OMR 0.00% today

1 SLL = 0.00001675 OMR · 1 OMR = 59,684.24 SLL

Mid-market rate, updated 16:33 UTC. Paid plans update as often as every 60 seconds. Get SLL→OMR rates via API

SLL to OMR over the last year

52-week high: 0.00001705
52-week low: 0.00001674
52-week average: 0.00001688
Change over the year: −1.36%

Conversion tables

SLL to OMR
SLL	OMR
1 SLL	0.00001675 OMR
10 SLL	0.0001675 OMR
100 SLL	0.001675 OMR
1,000 SLL	0.01675 OMR
10,000 SLL	0.1675 OMR
50,000 SLL	0.8377 OMR
100,000 SLL	1.675 OMR

OMR to SLL
OMR	SLL
1 OMR	59,684.24 SLL
10 OMR	596,842.37 SLL
100 OMR	5,968,423.68 SLL
1,000 OMR	59,684,236.85 SLL
10,000 OMR	596,842,368.47 SLL
50,000 OMR	2,984,211,842.37 SLL
100,000 OMR	5,968,423,684.75 SLL

Get SLL→OMR rates via API

The live rate, the rate on any past day or a whole range, for OMR 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=SLL -d currencies=OMR \
  -H "apikey: YOUR-API-KEY"

# the rate on a past day
curl https://api.currencyapi.com/v3/historical \
  -G -d base_currency=SLL -d currencies=OMR \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about SLL to OMR

How much is 1 SLL in OMR?

1 Old Sierra Leonean Leone is 0.00001675 Omani rials at the mid-market rate of 4 October 2026, 16:33 UTC, when 1 SLL = 0.00001675 OMR.

What was the SLL to OMR rate over the last year?

Over the last 52 weeks 1 SLL ranged from 0.00001674 to 0.00001705 OMR, 0.00001688 OMR on average.

Which exchange rate is this?

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