Electric Charge Converters

Convert between electric charge units used in battery capacity, electrical engineering, and electronics applications with exact coulomb-based scaling and exact Ah relationships.

Scope & Verification

This hub groups related converter families so you can move from the category level to exact routes with one clear basis per page.

  • Families are split so exact-factor, profile-based, density-based, and estimate-style pages do not collapse into one generic answer.
  • Leaf pages keep calculator, common values, FAQ, and reverse routes aligned to the same assumption.
  • Methodology and verification pages document how those assumptions are chosen and checked.
Methodology How We Verify Editorial Policy

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 open the mirror page for the reverse electric-charge conversion.