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Heat Energy

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Symbols and Meanings
$Q$ = quantity of heat
$m$ = mass
$hc$ = heat capacity or thermal capacity
$shc$ = specific heat capacity or specific thermal capacity
$T$₁ = initial temperature
$T$₂ = final temperature

Units
$J$ = Joules
$kJ$ = kiloJoules
$cal$ = calories
$kcal$ = kilocalories
$Btu$ = British thermal unit
$kg$ = kilogram
$g$ = gram
$lb$ = pound

Formulas
$Q = hc * ΔT$
$Q = m * shc * ΔT$
c = specific heat capacity
ΔT = change in temperature
T₁ = initial temperature
T₂ = final temperature

Conversion of the Units
$0K = -273^oC$

$\therefore K = 273 + ^oC \:\:and\:\: ^oC = K - 273$
$0^oC = 32^oF$

Also; $100^oC = 212^oF$

$\therefore ^oC = \dfrac{5(F - 32)}{9}$ and $^oF = \dfrac{9C + 160}{5}$
$K = \dfrac{5F + 2297}{9}$
$1\:kcal = 4185.8J$
$1\:Btu = 1054.3503J$
$1\:kcal = 3.9673727240424Btu$
$T_2 = final\:\:temperature$

Heat Capacity

The heat capacity of a substance is defined as the quantity of heat required to raise the temperature of the substance (entire mass of the substance) by $1^oC$ or $1 K$.
It is also known as thermal capacity.
The S.I (System International) unit is the $JK^{-1}$ (Joules per Kelvin) also written as $J/K$
Other units are: $kJK^{-1}$ (kiloJoules per Kelvin); $kcal^oC^{-1}$ (kilocalories per degree Celsius); and $Btu^oF^{-1}$ (British thermal units per degree Fahrenheit) among others.

Heat Capacity Calculators

Given: heat capacity, initial temperature, final temperature

To calculate: quantity of heat

$hc$ = in

$T_1$ = in

$T_2$ = in

Given: quantity of heat, initial temperature, final temperature

To calculate: heat capacity

$Q$ = in

$T_1$ = in

$T_2$ = in

Given: quantity of heat, heat capacity, initial temperature

To calculate: final temperature

$Q$ = in

$hc$ = in

$T_1$ = in