Amp-Hours to Watt-Hours Calculator
Convert amp-hours (Ah) to watt-hours (Wh) with our comprehensive calculator. Calculate battery capacity, energy storage, and runtime for various electrical devices and applications.
Step 1: Battery Specifications
90%
Common Battery Voltages
Car batteries: 12V, Power tools: 18-20V, Lithium-ion packs: 3.7V per cell, UPS systems: 24V or 48V, Solar systems: 12V, 24V, or 48V.
Step 2: Application Specifications
10 hours
20%
Energy Calculation Formula
Watt-hours (Wh) = Amp-hours (Ah) × Voltage (V). Runtime (hours) = Battery Wh ÷ Device Watts. For accurate results, consider efficiency and safety margins.
Energy Conversion Results
Summary
Energy Visualization
Battery Comparison
Total Battery Energy
1200 Wh
100Ah × 12V battery
Watt-Hours (Wh)
1200 Wh
Kilowatt-Hours (kWh)
1.2 kWh
Estimated Runtime
20.0 hours
Effective Capacity
1080 Wh
Battery Energy Visualization
Amp-Hours
100 Ah
Voltage
12 V
Watt-Hours
1200 Wh
Daily Energy Use
720 Wh
Battery Lifespan
1.67 days
Charge Cycles
500-1000
Energy Cost
£0.18
Battery Type Comparison
| Battery Type | Typical Voltage | Energy Density | Cycle Life | Efficiency |
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