Voltage Calculator

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Content rating
Everyone
10+
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Content rating
Everyone
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About this app

Voltage Calculator is a fast, focused toolbox for everyday electronics work. Three calculators in one clean, dark interface give you instant answers while you type.

KEY FEATURES
• Series & parallel calculator: combine up to 15 resistors or capacitors and read the result in every common unit
• LED series resistor: enter supply voltage, forward voltage and forward current to get the right resistor and its power rating
• Built-in reference table of typical LED forward voltages
• Voltage divider: calculate the output voltage, or find the missing resistor for a target output
• Live circuit diagrams that show your values in place
• Results update instantly in multiple units as you type
• Available in 24 languages
Series/parallel R & C, LED resistor and voltage divider calculator.
Updated on
Jul 24, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

What’s new

Bug fixes and performance improvements for a better experience.