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Coulomb per square meter (C/m²)

SI unit of surface charge density: charge per area.

What is a coulomb per square meter?

Symbol
C/m²
Quantity
Surface Charge Density
Unit system
SI
Definition
SI unit of surface charge density: charge per area.
Exact
Yes, the value is exact by definition
Source
SI Brochure, 9th edition (BIPM, 2019)

Common applications

The SI unit for surface charge and electric polarization, used for capacitor plates and charged surfaces.

Coulomb per square meter in other surface charge density units

Coulomb per square meter quick reference

Coulomb per square meter in other units
Coulomb per square meterMicrocoulomb per square centimeterCoulomb per square centimeterCoulomb per square inch
1 C/m²= 100 µC/cm²= 0.0001 C/cm²= 0.00064516 C/in²
10 C/m²= 1000 µC/cm²= 0.001 C/cm²= 0.0064516 C/in²
100 C/m²= 10000 µC/cm²= 0.01 C/cm²= 0.064516 C/in²
1000 C/m²= 100000 µC/cm²= 0.1 C/cm²= 0.64516 C/in²

Where the coulomb per square meter fits

The next smaller surface charge density unit is the microcoulomb per square centimeter (µC/cm²). 1 C/m² = 100 µC/cm², and 1 µC/cm² = 0.01 C/m².

The next larger surface charge density unit is the coulomb per square inch (C/in²). 1 C/m² = 0.00064516 C/in², and 1 C/in² ≈ 1550.0031 C/m².

Frequently asked questions

How many microcoulombs per square centimeter are in one coulomb per square meter?
One coulomb per square meter = 100 µC/cm² (microcoulombs per square centimeter).
How many coulombs per square centimeter are in one coulomb per square meter?
One coulomb per square meter = 0.0001 C/cm² (coulombs per square centimeter).
How many coulombs per square inch are in one coulomb per square meter?
One coulomb per square meter = 0.00064516 C/in² (coulombs per square inch).