Recognised as Physical constant

Elementary charge

Elementary charge (e) is 1.60217663 × 10^-19 C. Exact since 2019; it now defines the ampere. Values follow CODATA 2018 (2019 SI redefinition).

Value

Value1.60217663 × 10^-19 C

Scientific notation1.602176634 × 10^-19 C

UnitC

Symbole

ExactnessExact by definitionExact since 2019; it now defines the ampere.

Reciprocal6.241509074 × 10^18

Order of magnitude10^-19

× 23.20435327 × 10^-19

× 101.60217663 × 10^-18

× 1001.60217663 × 10^-17

× 1,0001.60217663 × 10^-16

× 0.58.01088317 × 10^-20

× 0.11.60217663 × 10^-20

DatasetCODATA 2018 (2019 SI redefinition)

Categoryelectromagnetic

Why it mattersExact since 2019; it now defines the ampere.

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