Convert 10 Bhutanese Ngultrum (BTN) to Old Sierra Leonean Leone (SLL)

Convert Bhutanese Ngultrum to old Sierra Leonean leones at the live mid-market rate. Reverse: SLL to BTN

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 BTN to SLE.

Amount

From

10 Bhutanese Ngultrum =

2,388.43 SLL −0.06% today

1 BTN = 238.843 SLL · 1 SLL = 0.00418685 BTN

Mid-market rate, updated 09:43 UTC. Paid plans update as often as every 60 seconds. Get BTN→SLL rates via API

BTN to SLL over the last year

52-week high: 258.05
52-week low: 235.82
52-week average: 245.97
Change over the year: −6.50%

Conversion tables

BTN to SLL
BTN	SLL
1 BTN	238.84 SLL
10 BTN	2,388.43 SLL
100 BTN	23,884.31 SLL
1,000 BTN	238,843.14 SLL
10,000 BTN	2,388,431.44 SLL
50,000 BTN	11,942,157.19 SLL
100,000 BTN	23,884,314.38 SLL

SLL to BTN
SLL	BTN
1 SLL	0.004187 BTN
10 SLL	0.04187 BTN
100 SLL	0.4187 BTN
1,000 SLL	4.19 BTN
10,000 SLL	41.87 BTN
50,000 SLL	209.34 BTN
100,000 SLL	418.68 BTN

Get BTN→SLL rates via API

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

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

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Questions about BTN to SLL

How much is 10 BTN in SLL?

10 Bhutanese Ngultrum is 2,388.43 old Sierra Leonean leones at the mid-market rate of 4 October 2026, 09:43 UTC, when 1 BTN = 238.843 SLL.

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

Over the last 52 weeks 1 BTN ranged from 235.825 to 258.052 SLL, 245.97 SLL on average.

Which exchange rate is this?

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