Balance Formula Calculator

Separate the sides with -> or =. Any coefficients you write are ignored and replaced. Ionic charges such as Fe2+ or MnO4- are balanced too.
Balanced equation
C3H8 + 5O2 → 3CO2 + 4H2O
Chemical Equation Balancer
Balanced
Yes
Independent balanced reactions
1
Worked out from OpenStax Chemistry 2e, section 4.1 Writing and Balancing Chemical Equations and 2 other sources.

How this is worked out

6 steps
  1. Species, left to right: C3H8, O2, CO2, H2O
  2. Each element gives one conservation equation; solving them exactly over the rationals gives the smallest whole-number coefficients.
  3. C: 3 atom(s) left, 3 right
  4. H: 8 atom(s) left, 8 right
  5. O: 10 atom(s) left, 10 right
  6. Balanced: C3H8 + 5O2 → 3CO2 + 4H2O
Coefficients, left to righttable
1, 5, 3, 4
Reactantstable
formulacoefficient
C3H81
O25
Productstable
formulacoefficient
CO23
H2O4
Atoms of each element on each sidetable
elementreactantAtomsproductAtoms
C33
H88
O1010

Results are general information, not financial, tax, legal, medical or engineering advice.