Áireamhán Dlúis
Réitigh dlús, mais nó toirt, le roghanna aonaid agus tábla ábhar.
Torthaí a nuashonrú mar a chlóscríobh tú.
Maidir leis an áireamhán seo
Density measures how much mass is packed into a given volume: ρ = m / V. Rearranged, the mass of an object is m = ρ × V and the volume it occupies is V = m / ρ. This calculator lets you solve for any one of the three, entering the other two in whatever units you have — grams, kilograms, pounds and ounces for mass, and cm³/mL, litres or m³ for volume — and returns the density in both g/cm³ and the SI unit kg/m³ (1 g/cm³ = 1,000 kg/m³).
As a worked example, a 100 g object occupying 50 cm³ has a density of 100 / 50 = 2 g/cm³ (2,000 kg/m³) — a bit less dense than aluminium. Because pure water is very close to 1 g/cm³, the calculator also tells you whether a material floats: anything below about 1 g/cm³ floats, anything above sinks, and something right at 1 g/cm³ is neutrally buoyant. A built-in table lists common densities for comparison — ice 0.92, oak 0.75, water 1.00, aluminium 2.70, iron 7.87, lead 11.34 and gold 19.32 g/cm³.
Density is used to identify materials, check the purity of metals and gemstones, work out whether an object will float or sink, convert between the mass and volume of fuels and liquids, and calculate the load a structure or vessel must carry. Because it is an intensive property — independent of the amount of material — a small sample gives the same density as a large one, which is what makes it such a reliable fingerprint for a substance.
Ceisteanna Coitianta
Cad é an fhoirmle dlúis?
Is ionann dlús agus mais roinnte ar toirt, ρ = m / V. Athshocraithe, mais = ρ × V agus toirt = m / ρ.
Cén aonaid a úsáideann sé seo?
De réir réamhshocraithe, gram agus ceintiméadar ciúbach (1 cm³ = 1 mL) a thabhairt dlús i g/cm³. Is é uisce íon thart ar 1 g/cm³, mar sin dlús-ná-uisce ábhair a léamh thuas 1 agus snámh thíos.
An mbeidh ábhar ag snámh nó ag dul faoi uisce?
Déan comparáid idir a dhlús agus dlús uisce ≈ 1 g/cm³. Faoi bhun an dlúis sin snámhann sé (oighear ag 0.92, darach ag 0.75), ag an leibhéal sin tá sé neodrach, agus os a chionn téann sé go doirteal (alúmanam 2.70, iarann 7.87).
Conas a thiontaigh mé g/cm³ go kg/m³?
Iolraigh faoi 1,000: Is ionann 1 g/cm³ agus 1,000 kg/m³. Taispeánann an uirlis an dá rud, mar sin taispeántar ábhar 2 g/cm³ mar 2,000 kg/m³ freisin.
Conas a aimsím mais nó toirt in ionad dlús?
Is é an mais ρ × V agus is é an toirt m / ρ, mar sin tá mais 100 g ag ábhar 2 g/cm³ a líonann 50 cm³.
An athraíonn dlús le teocht?
Leathnaíonn an chuid is mó d’ábhair nuair a théitear iad, mar sin titeann a ndlús beagán de réir mar a ardaíonn an teocht. Tá uisce neamhghnách — tá sé níos dlúithe ag thart ar 4 °C — agus sin an fáth a snámhann oighear agus a reoann lochanna ón mbarr síos.
API — úsáid an áireamhán seo ó chód
Glaoigh ar an áireamhán seo mar chríochphointe JSON saor in aisce - níl aon eochair ag teastáil. Seol na luachanna réimse thíos mar pharaiméadair cheist nó JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Léigh an doiciméadú iomlán API →
Deireadhphointe
GET https://calculator.free/api/v1/density/curl
curl "https://calculator.free/api/v1/density/?solve=density&mass=100&volume=50&density=2"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/density/?" + new URLSearchParams({
"solve": "density",
"mass": "100",
"volume": "50",
"density": "2"
}));
const data = await r.json();
console.log(data.results);Is meastacháin iad na torthaí le haghaidh treoir ghinearálta amháin, ní comhairle airgeadais, leighis nó cánach.