Electric Current Density Converter
Convert current per area between A/mm², A/cm², A/m² and A/ft².
YOUR CALCULATION
Result
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Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
Convert current to amperes and the denominator area to square meters.
Current density in A/m² = value × amperes per current unit / square meters per area unit
Worked example
1 A/mm² is 100 A/cm² or 1000000 A/m². One mA/cm² is 10 A/m².
Assumptions and input details
Keep the same area normal, current component and DC, RMS or peak convention. This converts an entered current density without determining current, conductor cross section, wire ampacity, temperature rise, plating quality or an allowable loading.
References: BIPM: SI quantities and prefixes
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
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