Theoretical Yield Calculator

Enter reactant mass, molar masses, and stoichiometric coefficients — see the theoretical yield instantly with full step-by-step working.

Quick Reactions
1 Reactant
g
g/mol
mol
→
2 Product
g/mol
mol
3 Theoretical Yield
Moles of reactant
—
mol
Theoretical yield
—
grams
Theoretical yield
—
mol
4 Percent Yield (optional — enter actual yield)
g
Percent Yield
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Common Molar Masses — Quick Reference

👆 Click any row to autofill a molar mass field.

Substance Formula Molar Mass (g/mol)
WaterH₂O18.015
HydrogenH₂2.016
OxygenO₂32.000
Carbon dioxideCO₂44.010
MethaneCH₄16.043
AmmoniaNH₃17.031
NitrogenN₂28.014
Sodium chlorideNaCl58.440
Sodium hydroxideNaOH39.997
Hydrochloric acidHCl36.461
Calcium carbonateCaCO₃100.090
Iron (III) oxideFe₂O₃159.690
IronFe55.845
GlucoseC₆H₁₂O₆180.156
EthanolC₂H₅OH46.068
Sulfuric acidH₂SO₄98.079
ⓘ Theoretical yield is the maximum possible product from a given reactant amount, assuming 100% conversion. Percent yield = (actual ÷ theoretical) × 100. The reverse verification above works backwards from the theoretical yield to confirm the calculation is consistent.
Theoretical Yield Calculator [Free-Online-Stepwise]