Calculators Blog About Contact

60 free micro-calculators for batteries, solar, EV charging, and home power. Instant answers—no account required.

Categories

Convert
Battery
Power
Solar
EV Charging
Appliances
Battery Sizing
Cost
Backup

Company

About
Blog
Contact

Legal

Privacy Policy
Terms of Service

© 2026 WattQuick. All calculators are estimates—for planning only, not professional engineering advice.

All calculators

Convert

Wh to Ah Converter

Convert watt-hours to amp-hours using system voltage.

EnergyWh

VoltageV

Equivalent capacity

Enter Wh and voltage

Share this calculator

About Wh to Ah Converter

Wh to Ah formula

Divide watt-hours by voltage to get amp-hours: Ah = Wh ÷ V. A 1,200 Wh pack at 12 V equals 100 Ah.

Practical tip

Always use the nominal system voltage your battery runs at. Lithium cells are often counted at 3.7 V per cell in marketing, while lead-acid is commonly 12 V.

Related calculators

More tools in this category and beyond

Convert
Ah to Wh Converter
Open
Runtime
Battery Runtime
Open
Backup
UPS Runtime
Open
Convert
kVA to kW Converter
Open