Herramienta Química Rápida
Convertidor de Gramos a Moles
Ingrese cualquier fórmula química para calcular el peso molecular, masa molar, porcentaje elemental y número de átomos con precisión de 4 decimales.
118
118 Elementos
Nₐ
4 Decimales
100%
100% En Cliente
Peso Molecular
118 elementos · Pesos atómicos IUPAC 2021
Ejemplos rápidos:
Ingrese una fórmula química arriba para calcular el peso molecular
Guía paso a paso
Cómo calcular el peso molecular
Calcule la masa de una fórmula química en tres sencillos pasos.
Input a Chemical Formula
Type any chemical formula — H₂O, C₆H₁₂O₆, NaOH, or even complex structures with parentheses and brackets. The molar mass calculator identifies each element, resolves nested groups, and counts every atom. All 118 elements from the periodic table are supported.
NaOH
↓
Na × 1O × 1H × 1
FAQ
Preguntas Frecuentes
Respuestas a preguntas habituales sobre masa molar y fórmulas químicas.
Molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol).
To calculate molar mass: (1) identify each element in the formula, (2) look up each element's standard atomic weight from the IUPAC periodic table, (3) multiply each atomic weight by its atom count, and (4) sum all products.
The Avogadro constant (Nₐ) is exactly 6.02214076 × 10²³ mol⁻¹, as defined by the 2019 redefinition of SI units.
Use the formula: moles = mass (g) ÷ molar mass (g/mol).
Numerically, yes — molar mass and molecular weight have the same value.
Ionic compounds like NaCl don't form discrete molecules, so technically we use 'formula mass' rather than 'molecular mass.' However, the molar mass calculation is identical: sum the atomic weights of all atoms in one formula unit.
This calculator provides molar mass values to 4 decimal places using IUPAC 2021 standard atomic weights.