Chemistry
Limiting Reactant Calculator
Lets users compute and verify limiting reactant instantly with formula, steps and examples — no manual math.
Enter your details
mol
mol
Your result
Limiting reactant
Reactant B
A ratio 3.00 vs B ratio 0.67 → B is limiting.
A: moles ÷ coefficient
3
B: moles ÷ coefficient
0.6667
About this calculator
The limiting reactant is the one with the smallest (moles ÷ coefficient) ratio — it runs out first and caps the product. The other reactant is in excess.
Frequently asked questions
Why CalcBreeze
- ✔ Verified formulas, instant recalculation
- ✔ Works on every device, no signup needed
- ✔ Save, share & export results
- ✔ 1100+ calculators across 50+ categories
- ✔ Pixel-consistent design across every tool