Ammeter Calculator
Calculate shunt resistor values for extending ammeter range and measure current.
Calculation Mode
Rs = Rm / (n - 1)
n = multiplying factor (Imax / Im)
Shunt Resistor
5.0005 mohms
Required Shunt Value
Design Parameters
Multiplying Factor (n)10000.00x
Meter Current1.000 mA
Shunt Current9.9990 A
Voltage at Full Scale50.00 mV
Shunt Specifications
Power Dissipation499.95 mW
Min Power Rating1000 mW
Recommended Wire14 AWG
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.