Electric Charge Converters
Convert between electric charge units used in battery capacity, electrical engineering, and electronics applications. This hub applies the exact current-time relationship with coulomb-based normalization so SI prefixes and ampere-hour units stay consistent and reversible.
Explanation
Electric charge quantifies the amount of electricity transported or stored in a system. The SI unit is the coulomb (C), and charge is defined by the exact current-time relationship C = A·s. Ampere-hour units follow directly from that definition, with 1 Ah = 3600 C exactly and mAh as a decimal submultiple of Ah. SI prefixes scale coulombs by exact powers of ten (mC, uC, nC). All conversions in this hub are purely multiplicative with no offsets. Every factor is computed by reducing units to coulombs. For clarity, electric charge conversions are grouped into SI scaling, ampere-hour scaling, and cross-system relationships.
Frequently Asked Questions
What is electric charge?
Electric charge is the physical quantity that describes how much electricity is carried or stored in a system.
What is the SI unit of charge?
The SI unit is the coulomb (C).
What does 1 Ah represent?
1 ampere-hour represents the charge moved by a current of 1 ampere over 1 hour, which equals exactly 3600 coulombs.
How many coulombs are in 1 Ah?
Exactly 3600 coulombs.
Why are mAh used in batteries?
Battery capacities are often small enough that milliampere-hours provide practical readable values while preserving exact scaling.
Are charge conversions multiplicative?
Yes. These conversions are purely multiplicative with no offsets.
How do I switch direction?
Use the switch button to navigate directly to the mirror page for the reverse conversion.