How to enable the currency switcher

Go to Settings > General

Go to Customize theme > General Settings > Currency

Test it live (everywhere pricing are displayed)

List of supported currencies and their format for currency converter

USD "${{amount}} USD"
EUR "€{{amount}} EUR"
GBP "£{{amount}} GBP"
CAD "${{amount}} CAD"
ALL "Lek {{amount}} ALL"
DZD "DA {{amount}} DZD"
AOA "Kz{{amount}} AOA"
ARS "${{amount_with_comma_separator}} ARS"
AMD "{{amount}} AMD"
AWG "Afl{{amount}} AWG"
AUD "${{amount}} AUD"
BBD "${{amount}} Bds"
AZN "m.{{amount}} AZN"
BDT "Tk {{amount}} BDT"
BSD "BS${{amount}} BSD"
BHD "{{amount}}0 BHD"
BYR "Br {{amount}} BYR"
BZD "BZ${{amount}} BZD"
BTN "Nu {{amount}} BTN"
BAM "KM {{amount_with_comma_separator}} BAM"
BRL "R$ {{amount_with_comma_separator}} BRL"
BOB "Bs{{amount_with_comma_separator}} BOB"
BWP "P{{amount}} BWP"
BND "${{amount}} BND"
BGN "{{amount}} лв BGN"
MMK "K{{amount}} MMK"
KHR "KHR{{amount}}"
KYD "${{amount}} KYD"
XAF "FCFA{{amount}} XAF"
CLP "${{amount_no_decimals}} CLP"
CNY "¥{{amount}} CNY"
COP "${{amount_with_comma_separator}} COP"
CRC "₡ {{amount_with_comma_separator}} CRC"
HRK "{{amount_with_comma_separator}} kn HRK"
CZK "{{amount_with_comma_separator}} Kč"
DKK "kr.{{amount_with_comma_separator}}"
DOP "RD$ {{amount}}"
XCD "EC${{amount}}"
EGP "LE {{amount}} EGP"
ETB "Br{{amount}} ETB"
XPF "{{amount_no_decimals_with_comma_separator}} XPF"
FJD "FJ${{amount}}"
GMD "D {{amount}} GMD"
GHS "GH₵{{amount}}"
GTQ "{{amount}} GTQ"
GYD "${{amount}} GYD"
GEL "{{amount}} GEL"
HNL "L {{amount}} HNL"
HKD "HK${{amount}}"
HUF "{{amount_no_decimals_with_comma_separator}} Ft"
ISK "{{amount_no_decimals}} kr ISK"
INR "Rs. {{amount}}"
IDR "Rp {{amount_with_comma_separator}}"
ILS "{{amount}} NIS"
JMD "${{amount}} JMD"
JPY "¥{{amount_no_decimals}} JPY"
JEP "£{{amount}} JEP"
JOD "{{amount}}0 JOD"
KZT "{{amount}} KZT"
KES "KSh{{amount}}"
KWD "{{amount}}0 KWD"
KGS "лв{{amount}}"
LVL "Ls {{amount}} LVL"
LBP "L£{{amount}} LBP"
LTL "{{amount}} Lt"
MGA "Ar {{amount}} MGA"
MKD "ден {{amount}} MKD"
MOP "MOP${{amount}}"
MVR "Rf{{amount}} MRf"
MXN "$ {{amount}} MXN"
MYR "RM{{amount}} MYR"
MUR "Rs {{amount}} MUR"
MDL "{{amount}} MDL"
MAD "Dh {{amount}} MAD"
MNT "{{amount_no_decimals}} MNT"
MZN "Mt {{amount}} MZN"
NAD "N${{amount}} NAD"
NPR "Rs{{amount}} NPR"
ANG "{{amount}} NAƒ"
NZD "${{amount}} NZD"
NIO "C${{amount}} NIO"
NGN "₦{{amount}} NGN"
NOK "kr {{amount_with_comma_separator}} NOK"
OMR "{{amount_with_comma_separator}} OMR"
PKR "Rs.{{amount}} PKR"
PGK "K {{amount}} PGK"
PYG "Gs. {{amount_no_decimals_with_comma_separator}} PYG"
PEN "S/. {{amount}} PEN"
PHP "₱{{amount}} PHP"
PLN "{{amount_with_comma_separator}} zl PLN"
QAR "QAR {{amount_with_comma_separator}}"
RON "{{amount_with_comma_separator}} lei RON"
RUB "руб{{amount_with_comma_separator}} RUB"
RWF "{{amount_no_decimals}} RWF"
WST "WS$ {{amount}} WST"
SAR "{{amount}} SAR"
STD "Db {{amount}} STD"
RSD "{{amount}} RSD"
SCR "Rs {{amount}} SCR"
SGD "${{amount}} SGD"
SYP "S£{{amount}} SYP"
ZAR "R {{amount}} ZAR"
KRW "₩{{amount_no_decimals}} KRW"
LKR "Rs {{amount}} LKR"
SEK "{{amount_no_decimals}} kr SEK"
CHF "SFr. {{amount}} CHF"
TWD "${{amount}} TWD"
THB "{{amount}} ฿ THB"
TZS "{{amount}} TZS"
TTD "${{amount}} TTD"
TND "{{amount}} DT"
TRY "{{amount}}TL"
UGX "Ush {{amount_no_decimals}} UGX"
UAH "₴{{amount}} UAH"
AED "Dhs. {{amount}} AED"
UYU "${{amount_with_comma_separator}} UYU"
VUV "${{amount}}VT"
VEF "Bs. {{amount_with_comma_separator}} VEF"
VND "{{amount_no_decimals_with_comma_separator}} VND"
XBT "{{amount_no_decimals}} BTC"
XOF "CFA{{amount}} XOF"
ZMW "ZMW{{amount_no_decimals_with_comma_separator}}"

What if your currency doesn't "fit" in the cart widget

You can go to General Settings > Cart and reduce the font size