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Chemical Equation Balancer Calculator

Chemical Equation Balancer Calculator


Enter an Equation

H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La Hf Ta W Re Os Ir Pt Au Hg TI Pb Bi Po At Rn
Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn Nh FI Mc Lv Ts Og
Lanthanoids Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Actinoids Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
SPACE 1 2 3 4 5 6 7 8 9 0 + = CLEAR
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An online chemical equation balancer calculator provides a balanced equation, structure, and equilibrium constant with chemical names and formulas. This chemical equation calculator balances different equations of chemical reactions. Continue reading to learn how to balance chemical equations and more.

What is Chemical Equation?

The chemical equation is defined as the symbolic representation of a chemical reaction, with reactants on the left and products on the right. Arrows separate reactants and products. Each substance in a chemical reaction is separated by a plus sign (+).

In short, the chemical equation shows the total chemical conversion of reactants to products. There are two ways to write chemical equations: symbolic equations and word equations. Similarly, you can perform calculations using the chemical product equation calculator or manually.

$$ HCl + NaOH → H2O + NaCl $$


HCl = Hydrochloric Acid

NaOH = Sodium Hydroxide

H2O = Water

NaCl = Sodium Chloride

Online chemical equation balancer calculator Allows you to make a balance chemical equation immediately.

However, an online Percent Yield Calculator helps you to calculate the percent yield value by adding theoretical yield and actual yield value.


Balance the given equation: \( O_2 + CH_4 → H_2O + CO_2 \)


Given the chemical reaction:

$$ O_2 + CH_4 → H_2O + CO_2 $$

The balanced chemical equation for the given equation is:

$$ 2 O_2 + CH_4 → 2 H_2O + CO_2 $$

How ​​are Chemical Equations Written?

Chemical equations provide information about the reaction elements and molecules produced from the reaction. The Law of Conservation of mass describes that the mass of the reactants must be balanced with the mass of the product. In order to balance the chemical equation, the atoms and molecules of the element on the reactant side (left side) and the product side (right side) must be the same.

When writing the chemical equation, the reactants must be located in front of the arrow on the left and the product on the right. This remains the same when using the balancing chemical equations calculator. The arrow —> indicates that the reaction is irreversible and indicates the direction of the reaction. The plus sign indicates more than one product or reactant on each side of the equation.

The word equation gives a good summary, and the symbolic equation gives more details. It shows more information and allows us to see how many molecules and atoms are involved in each reaction.

How do you Balance Chemical Equations?

Balance the Chemical Equation:

$$ Fe + O_2 = Fe_2O_3 $$

Step 1. Unbalanced Chemical Equation:

Write the imbalanced equation of the chemical reaction. All products and reactants must be known. For best results, a chemical balance calculator records the reaction in ion form.

$$ O_2 + Fe → Fe_2O_3 $$

Step 2. Make a List:

The balancing equations calculator divides the redox reaction into half of the reaction. Redox reactions are nothing but oxidation and reduction reactions that proceed simultaneously.

  1. a) The chemical equation balancer calculator specifies the oxidation state for each atom in the equation. The oxidation state (also called the oxidation number) is a measure of the oxidation state of the atoms in a substance.

$$ O^0_2 + Fe^0 → Fe^{+3}_2O^{-2}_3 $$

  1. b) The balancing chemical equations calculator identifies and records all redox pairs of the reaction. Determine which reactants are oxidized (increase in oxidation state in the reaction) and reduce (decrease in oxidation state).

$$ O: Fe^0 → Fe_{– 2}^{+3} O^{-2}_3 $$

$$ R: O^0_2 → H^{+1}_{2}O^{-2} $$

  1. c) If the redox pair is oxygen in the -2 oxidation state or hydrogen in the +1 oxidation state, then a balanced equation calculator replaces it with water molecules.

$$ O: Fe0 → Fe – 23 + 32O $$

$$ R: O^0_2 → H – 2 + 12O $$

Step 3: Determine the atoms in each element:

Balance the atoms in every half chemical reaction. The chemical equation must have the same number of atoms for each element on both sides of the equation. Add the appropriate ratio that comes before the chemical formula. Please do not change the formula while balancing it. The balance chemical equations calculator balance each half of the reaction separately.

a) Balance all other atoms except oxygen and hydrogen. For this, we can use any type in the skeleton equation.

Note that the balance equations calculator adds reactants on the left side of the equation, and products are added on the right side.

$$ O: 2Fe → O_3Fe_2 $$

$$ R: O_2 → 2H_2O $$

b) Balance the oxygen atoms: In the equation, the balance chemical equation calculator adds oxygen atoms on the left and right sides to equal the number of oxygen atoms.

$$ O: 3H_2O + 2Fe → Fe_2O_3 $$

$$ R: O_2 → 2H_2O $$

c) Balance the hydrogen atoms: The balancing equation calculator checks the same numbers of hydrogen atoms on the left and right sides, and if they aren’t equal, then these atoms can be equal by adding protons (H+).

$$ O: 3H_2O + 2Fe → Fe_2O_3 + 6H+ $$

$$ R: 4H+ O_2 → 2H_2O $$

Step 4. Balance the charge:

The balancing chemical equations calculator balance the charge by adding electrons (e-) to the more positive side to equal the less positive side of the half-reaction.

$$ O: 3H_2O + 2Fe → 6H+ + 6e- + Fe_2O_3 $$

$$ R: 4H + O_2 + + 4e- → 2H_2O $$

Step 5. Put Coefficients in Front of Molecules:

The balance equation calculator multiplies the various coefficients by an integer that gives the least common multiple of the half-reaction.

$$ O: 3H_2O + 2Fe → 6H+ + 6e- + Fe_2O_3| *2 $$

$$ R: 4H + O_2 + 4e- → 2H_2O| *3 $$

$$ O: 6H_2O + 4Fe → 12H+ + 12e- + 2Fe_2O_3 $$

$$ R: 12H+ + 12e- + 3O_2 → 6H_2O $$

Step 6. Add half-reactions:

These two half-reactions can be combined with equation arrows. The balanced chemical equation calculator adds all reactants on one side and all products on the other side.

$$ 4Fe + 6H_2O + 3O_2 + 12H+ + 12e- → 6H_2O + 2Fe_2O_3 + 12H+ + 12e- $$

Step 7. Simplify the equation:

Write the given equations so that the coefficients are the smallest set of integers.

$$ 3O_2 + 4Fe → 2Fe_2O_3 $$

Finally, the balancing chemical equations calculator always checks whether the equation is balanced or not.

First, the chemical formula calculator makes sure that the equations have the same number of atoms on both sides of the certain equation.

Fe 4*1 2*2 0
O 3*2 2*3 0

Second, the chemical equation product calculator makes sure that the sum of charges on one side of the equation equals the sum of charges on the other side. It does not matter what the charge as long as the two sides are the same.

$$ 3*0 + 4*0 = 2*0 $$

$$ 0 = 0 $$

Because the sum of the atoms on the left side of the equation is equal to the sum of the same atoms on the right side of the equation, and the charges on both sides are equal, the chemical reaction calculator write a balance equation

$$ 3O_2 + 4Fe → 2Fe_2O_3 $$

However, an online Ideal Gas Law Calculator computes the unknown measurable properties of the ideal gas law equation.

Table of Some Common Ions:

Negative Ions:

Valency 1 Valency 2 Valency 3
Fluoride F Oxide O2- Phosphate PO43-
Chloride Cl Sulphide S2-
Bromide Br Carbonate CO32-
Iodide I Sulphate SO42-
Hydroxide OH Sulphite SO32-
Nitrate NO3 Dichromate Cr2O72-
Bicarbonate HCO3 Chromate CrO42-
Bisulphate HSO3 Oxalate C2O42-
Nitrite NO2 Thiosulphate S2O32-
Chlorate ClO3 Tetrathionate S4O62-
Permanganate MnO4 Monohydrogen Phosphate HPO42-
Hypochlorite OCl


Positive Ions:

Valency 1 Valency 2 Valency 3
Lithium Li+ Magnesium Mg2+ Aluminium Al3+
Sodium Na+ Calcium Ca2+ Iron III Fe3+
Potassium K+ Strontium Sr2+ Chromium Cr3+
Silver Ag+ Barium Ba2+
Hydronium H3O+ Copper II Cu2+
Hydrogen H+ Lead II Pb2+
Ammonium NH4+ Zinc Zn2+
Copper I Cu+ Manganese II Mn2+
Mercury I Hg+ Iron II Fe2+


How Chemical Equation Balancer Calculator Works?

This balancing chemical equations calculator describes the quantities of products and reactants precisely in a chemical reaction by following these steps:


  • First, enter the chemical equation with the help of a periodic table. You can balance several equations by clicking on the load example button.
  • Hit the calculate button to balance the equation.


  • The chemical equation balancer calculator displays the balanced equation.
  • It also provides the molecules and atoms of different elements that participate in the chemical reaction.


What are the main types of chemical equations?

The main types of chemical equations are:

  • Combustion reaction
  • Combination reaction
  • Decomposition reaction
  • Precipitation reaction

Why is it crucial that a chemical equation is always balanced?

Chemical equations are used to create different chemicals and compounds. Using these chemical equations with balanced atoms leads to chemical reactions that produce the desired product.

If the chemical equations are not balanced, it is impossible to obtain the required chemical substances. Products made with unbalanced chemical equations are defective and wasteful.


Use this online chemical equation balancer calculator to convert the unbalanced equation to a balanced chemical equation that is not beneficial for productivity. Balancing different equations can be a risky task because it involves dealing with other element atoms and molecules.


From the source of Wikipedia: Formation of chemical reaction, Balancing chemical equations, Matrix method, Ionic equations, barium phosphate.

From the source for Lumen Learning: Writing and Balancing Chemical Equations, Balancing Equations, Additional Information in Chemical Equations, Equations for Ionic Reactions, complete ionic equation.

From the source of Brilliant: Balancing Chemical Reactions, Hit and Trial Method, polyatomic ions, Ion Electron Method, N-factor Method.