A fuel control system (300) for fuel consumption calculation for a fuel and water mixture is provided. The fuel control system (300) includes a mixer (330), a fuel source (310) fluidly coupled to the mixer (330), the fuel source (310) being configured to measure a flow of fuel to the mixer (330), a water source (315) fluidly coupled to the mixer (330), the water source (315) being configured to measure a flow of water to the mixer (330), and a mixture flow meter (5) fluidly coupled to the mixer (330). The mixture flow meter (5) is configured to receive and measure properties of a fuel/water mixture from the mixer (330).