Ah and Wh Converter

About This Tool

This tool converts between Ah and Wh for electrical energy storage. It accepts inputs in Ah, Wh, and voltage (V) and returns the missing value or validates consistency. It is useful for battery sizing, energy budgeting, and system design.
Conceptually, Wh = Ah × V, and conversely, Ah = Wh ÷ V. If two values are provided, the third is derived; if all three are provided, the tool checks for consistency within a small tolerance. Outputs present computed results with clear numeric formatting.
Intended users include electrical engineers, solar installers, EV technicians, and hobbyists who need fast, repeatable energy calculations without manual math. The tool’s value lies in multi-directional conversion, automatic derivation of the unknown quantity, and explicit handling of special cases such as deriving voltage from Ah and Wh when only those two are given. Key features include input validation, precision control, and robust error signaling for invalid or conflicting data.
Use cases cover battery pack sizing, energy storage budgeting, and equipment provisioning for off-grid, grid-tied, or backup power applications.

Sign in to see all your usage