Fuel Sender Ohm Converter

This tool converts a fuel sender resistance (ohms) to an estimated fuel level for automotive diagnostics. It is intended for technicians, service bays, and hobbyists who need quick readings without disassembling the tank. The core logic maps resistance to level using standard sender ranges or a user-provided curve, producing an instant percent output. 0 Ω typically indicates a full tank, while higher resistance moves toward empty; non-linear senders can be accommodated via a custom curve. The system supports optional tank size input to estimate remaining volume beyond percent alone.

Conceptually, it treats the sender as a mapping from resistance to percentage, with linear or piecewise mappings depending on the curve. A simple linear default uses percent = clamp((max_ohms - ohms) / (max_ohms - min_ohms) * 100, 0, 100). When a tank capacity is supplied, the tool can translate percent into an estimated volume. This enables quick gauge interpretation, fault isolation, and fuel budgeting for maintenance and diagnostics.

Beneficiaries include repair shops, independent garages, and fleet maintenance teams seeking repeatable, data-driven readings. The value lies in reducing time spent diagnosing gauge discrepancies and avoiding unnecessary tank removal. Core features include support for common gasoline and diesel sender ranges, optional custom curves, real-time results, and optional volume estimation based on tank size. Use cases include on-vehicle diagnostics, pre-purchase checks, and field maintenance planning.