Total Energy to Heat Water Calculator

This calculator helps you determine the total energy required to heat water from an initial temperature to a final temperature, given the volume of water and the specific heat capacity of water.

Input Parameters

Calculation Results

Calculation Formula

Energy (Q) = m × c × ΔT

Where:
Q = Energy required (Joules)
m = Mass of water (kg)
c = Specific heat capacity of water (J/kg·°C)
ΔT = Change in temperature (°C) = Tfinal - Tinitial

Result

Total Energy to Heat Water Calculator Calculator Usage Guide

Learn how to use the Total Energy to Heat Water Calculator and its working principles

How to Use the Calculator

  1. Enter the volume of water in liters.
  2. Enter the initial temperature of the water in degrees Celsius (°C).
  3. Enter the final temperature you want to heat the water to in degrees Celsius (°C).
  4. The specific heat capacity of water is pre-filled and set to 4186 J/kg·°C, which is the standard value for water. You can change it if needed.
  5. Click the "Calculate" button to calculate the total energy required to heat the water.
  6. The results will be displayed in Joules (J) and kilojoules (kJ).

Working Principle

The calculator uses the formula Q = m × c × ΔT to calculate the energy required to heat water:

  • Q is the energy required (in Joules).
  • m is the mass of the water (in kilograms). Since the density of water is approximately 1 kg/L, the volume in liters is equal to the mass in kilograms.
  • c is the specific heat capacity of water (in J/kg·°C). The standard value for water is 4186 J/kg·°C.
  • ΔT is the change in temperature (in °C), calculated as the final temperature minus the initial temperature.

Example

For example, if you want to heat 5 liters of water from 20°C to 80°C:

  1. Volume = 5 liters
  2. Initial Temperature = 20°C
  3. Final Temperature = 80°C
  4. Specific Heat Capacity = 4186 J/kg·°C
  5. Energy Required = 5 kg × 4186 J/kg·°C × (80°C - 20°C) = 5 × 4186 × 60 = 1,255,800 Joules = 1255.8 kJ