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Enter a value, pick units, then press Convert.
Presets
Tap a preset to auto-fill and run.
Enter any two of V / I / R. Press Calculate.
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Formulas: V = I·R • I = V/R • R = V/I • P = V·I
Enter any two of V / I / P. Press Calculate.
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Formulas: P = V·I • I = P/V • V = P/I • R = V/I
Favorites
Saved locally on this device (localStorage).