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Engineering Calculator · 129

Electroplating Charge, Mass & Thickness Calculator

Estimate electrodeposited mass and average thickness from electric charge, reaction electron number, current efficiency, density and plated area.

Thermal & material change
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Live calculation

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Units remain visible beside every field and result. Change any input to recalculate immediately in your browser.

01

Inputs

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Results

Electric charge3,600C
Faraday-law equivalent metal mass1.094966g
Equivalent average metal thickness12.302984µm

Formula
Q=ItQ=Itm=QMηzFm=\frac{QM\eta}{zF}δμm=mρA 104\delta_{\mathrm{\mu m}}=\frac{m}{\rho A}\,10^4

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Direct answer

What this result means

Faraday’s law relates deposited mass to charge: m = QMη/(zF). Average thickness then equals deposited volume divided by plated area. One ampere for one hour gives 3,600 C; for an illustrative nickel 2+ reaction at 100% efficiency, the calculated mass is about 1.095 g.

Electroplating Charge, Mass & Thickness Calculator engineering relationship diagramUse current and minutes, or directly measured charge. M is metal molar mass and z is electrons per deposited metal atom for the actual reaction. Efficiency enters as a percentage. With mass in grams, density in g/cm³ and area in cm², thickness is first in centimetres and is multiplied by 10⁴ for micrometres. This dedicated schematic represents cathodic electrodeposition faraday charge and is not to scale.Charge Q = ItAnode +Cathode −Metal-ion reductionDepositFARADAY-LAW EQUIVALENT DEPOSIT · TOOL 129Known charge quantityElectric charge
Calculator-specific engineering relationship diagram — schematic, not a product drawing, and not to scale.

Formula & theory

Make the assumptions visible.

Use current and minutes, or directly measured charge. M is metal molar mass and z is electrons per deposited metal atom for the actual reaction. Efficiency enters as a percentage. With mass in grams, density in g/cm³ and area in cm², thickness is first in centimetres and is multiplied by 10⁴ for micrometres.

Calculation relationship
Q=ItQ=Itm=QMηzFm=\frac{QM\eta}{zF}δμm=mρA 104\delta_{\mathrm{\mu m}}=\frac{m}{\rho A}\,10^4

Use current and minutes, or directly measured charge. M is metal molar mass and z is electrons per deposited metal atom for the actual reaction. Efficiency enters as a percentage. With mass in grams, density in g/cm³ and area in cm², thickness is first in centimetres and is multiplied by 10⁴ for micrometres.

Formula terms

Variables

Use sequence

From measurement to review

  1. Identify the electrode reaction, deposited metal, efficiency and area represented by the charge.
  2. Enter constant current/time or integrated charge, then the reaction and deposit properties.
  3. Compare the theoretical average with suitable coating measurements and the specified local-thickness requirements.

Limits

What this calculation does not confirm

  • Electrodeposition occurs at the cathode for the stated metal-ion reaction; changing current requires integrated charge.
  • All relevant deposit is assigned to the entered area and density. Current distribution, edge buildup, porosity and alloy codeposition are excluded.
  • Electroless plating is not calculated from an externally applied plating current. Coulometric stripping requires its own calibrated anodic method; this conversion alone is not a coating test.

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Calculator FAQ

Use the number without losing the engineering context.

These answers clarify what the tool calculates and where a product-specific review still begins.

01Calculator guidanceWhich electrode receives the electroplated metal?

For the stated metal-ion reduction process, metal is deposited at the cathode. A soluble metal anode can replenish ions by dissolution; describing the deposited coating as forming on that anode would reverse the process.

02Calculator guidanceCan this Faraday-law tool calculate electroless nickel thickness from plating current?

No. Electroless nickel relies on chemical reduction rather than an externally applied deposition current. Its thickness requires appropriate process information or actual coating measurement.

03Calculator guidanceDoes average Faraday-law thickness replace a local coating measurement?

No. Current distribution and surface geometry produce local differences, and real efficiency must be known. Validate the coating with the appropriate thickness method and specified measurement locations.

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