Convert 10 Old Sierra Leonean Leone (SLL) to Nigerian Naira (NGN)

Convert old Sierra Leonean leones to Nigerian nairas at the live mid-market rate. Reverse: NGN 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 NGN.

Amount

From

10 old Sierra Leonean leones =

0.5779 NGN 0.00% today

1 SLL = 0.0577853 NGN · 1 NGN = 17.3054 SLL

Mid-market rate, updated 16:47 UTC. Paid plans update as often as every 60 seconds. Get SLL→NGN rates via API

SLL to NGN over the last year

52-week high: 0.065143
52-week low: 0.057574
52-week average: 0.060828
Change over the year: −10.33%

Conversion tables

SLL to NGN
SLL	NGN
1 SLL	0.05779 NGN
10 SLL	0.5779 NGN
100 SLL	5.78 NGN
1,000 SLL	57.79 NGN
10,000 SLL	577.85 NGN
50,000 SLL	2,889.26 NGN
100,000 SLL	5,778.53 NGN

NGN to SLL
NGN	SLL
1 NGN	17.31 SLL
10 NGN	173.05 SLL
100 NGN	1,730.54 SLL
1,000 NGN	17,305.44 SLL
10,000 NGN	173,054.44 SLL
50,000 NGN	865,272.22 SLL
100,000 NGN	1,730,544.44 SLL

Get SLL→NGN rates via API

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

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Questions about SLL to NGN

How much is 10 SLL in NGN?

10 old Sierra Leonean leones is 0.5779 Nigerian nairas at the mid-market rate of 4 October 2026, 16:47 UTC, when 1 SLL = 0.0577853 NGN.

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

Over the last 52 weeks 1 SLL ranged from 0.0575741 to 0.0651434 NGN, 0.0608282 NGN on average.

Which exchange rate is this?

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