Gallons to Kilograms Converter

About This Tool

This tool converts a volume input in gallons to a mass output in kilograms by using a two-step transformation: gallons → liters and liters → kilograms via density. The user selects the gallon system (US or UK) and provides a density in kg/L. If density is omitted, 1.0 kg/L is assumed, corresponding to water at standard conditions. The primary output is mass in kilograms, useful for inventory, formulation, and shipping planning.\n\nCore logic: liters_per_gallon is 3.78541 for US and 4.54609 for UK. mass_kg = volume_gal × liters_per_gallon × density_kg_per_L. The tool supports required inputs (volume_gal, gal_type, density_kg_per_L with default) and outputs mass_kg with fixed decimal formatting. Advanced users may supply preset densities or adjust rounding precision to integrate with data workflows.\n\nWho benefits: laboratory technicians, beverage producers, cooks, and logistics teams needing fast, deterministic conversions. It enables scenario comparisons, e.g., 5 US gallons at density 1.2 kg/L yields 22.678025 kg; 5 UK gallons at the same density yields a different result due to larger gallons. The value is suitable for batch sizing, inventory reconciliation, and QA checks.\n\nDistinct value: explicit handling of gallon definitions, default water density, and clear numeric outputs without requiring external data. Use cases include formulation, inventory reconciliation, and transport planning. It does not perform temperature-based density adjustments unless the user supplies a custom density.

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