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Inverter Power Calculator
Calculate inverter power based on connected load and usage. Ideal for solar systems, backup power, and home or industrial applications.
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Inverter Current Calculator
Easily calculate inverter current based on input voltage, load, and efficiency. Perfect for solar, battery, or UPS system design and performance checks.
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Battery Voltage Calculator
Easily calculate battery voltage for series or parallel connections. Use our tool to find total output voltage and plan battery banks for projects.
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Battery Life Calculator
Calculate battery life in hours. Enter capacity (Ah/Wh), load power, voltage, depth of discharge, and efficiency to find runtime.
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Battery Capacity Calculator
Quickly calculate battery capacity (Ah or Wh) and runtime for DC loads; includes conversions, depth-of-discharge, efficiency, series/parallel sizing, and worked examples.
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inverter voltage calculator
Easily calculate the inverter output voltage from the DC input and efficiency. Perfect for solar, battery, and off-grid power systems.
Battery, UPS & Inverter Calculators: Free Backup Power Tools
Design reliable backup power systems with our free online battery, UPS, and inverter calculators. Whether you need emergency power for a home office, a data center UPS, or an off-grid solar installation, these tools calculate battery amp-hours, inverter wattage, and backup runtime instantly. Enter your load wattage, desired runtime, depth of discharge limit, and system voltage to receive precise battery bank sizing and inverter capacity recommendations. Each calculator includes Peukert's law adjustments for high-rate discharge, inverter efficiency losses, and temperature derating for real-world accuracy. Avoid costly failures from undersized batteries that drain too fast or inverters that overload on startup. Electricians, solar installers, and IT professionals use these tools to ensure uninterrupted power for critical equipment. No signup required—access from any device and complete your backup power design with confidence.