Includes your inputs and results for this calculation, plus any additional calculations you've compared.
Share & Print
The link includes your inputs and results, so anyone who opens it sees this exact calculation.
How This Calculator Works
Density measures how much mass is packed into a given volume — it’s why a bowling ball is
so much heavier than a beach ball of the same size. Enter any two of density, mass, or
volume, and this calculator finds the third.
Density is always shown in kilograms per cubic meter (kg/m³), the SI unit — mass and volume
each have their own unit picker (kg/g/lb and m³/L/ft³), since combining two separate unit
toggles into one compound density unit (kg/m³ vs. g/cm³ vs. lb/ft³) is rarely what’s actually
needed and would add real complexity for a corner case.
Worked Example
A sample weighing 500 grams with a volume of 200 liters:
Convert to canonical SI units: 500 g=0.5 kg and
200 L=0.2 m3 (since 1 m³ = 1,000 L).
Density: 0.5÷0.2=2.5 kg/m³.
Cómo funciona esta calculadora
La densidad mide cuánta masa está contenida en un volumen determinado — es la razón por la que
una bola de boliche pesa mucho más que una pelota de playa del mismo tamaño. Ingresa dos
cualesquiera de densidad, masa o volumen, y esta calculadora encuentra el tercero.
La densidad siempre se muestra en kilogramos por metro cúbico (kg/m³), la unidad del SI — la masa
y el volumen tienen cada uno su propio selector de unidades (kg/g/lb y m³/L/ft³), ya que combinar
dos selectores de unidades independientes en una sola unidad compuesta de densidad (kg/m³ frente a
g/cm³ frente a lb/ft³) rara vez es lo que realmente se necesita y añadiría complejidad real para un
caso poco frecuente.
Ejemplo resuelto
Una muestra que pesa 500 gramos con un volumen de 200 litros:
Convierte a unidades SI canónicas: 500 g=0.5 kg y
200 L=0.2 m3 (ya que 1 m³ = 1,000 L).
Density measures how much mass is packed into a given volume — the formula is density = mass ÷ volume. A material with high density (like lead) packs a lot of mass into a small volume; a material with low density (like foam) has much less mass for the same volume.
Why is density always shown in kg/m³?
Mass and volume each have their own unit picker, but combining two separate toggles into one compound density unit (kg/m³ vs. g/cm³ vs. lb/ft³) adds real complexity for a case most visitors don't need — kg/m³, the SI unit, keeps the result unambiguous and easy to compare.
Can I use this to check if an object will float?
Roughly, yes — an object floats in a fluid if its density is less than the fluid's (water's density is 1,000 kg/m³, or 1 kg/L). This calculator finds an object's density; comparing it to the fluid's density gives a good first estimate, though real buoyancy also depends on shape and trapped air.
We use cookies for analytics and ads to help support this free site. You can accept all, or decline and we'll only use what's needed for the site to work.