Solve concentration, moles, volume, solute mass or dilution using explicit solution-volume units and conservation-of-solute assumptions.
01 / PURPOSE-SPECIFIC INPUTS
02 / RESULT & SUPPORTING WORK
Mathematical solution-quantity estimate only. No hazardous-substance handling instructions, mixing procedure or guarantee of ideal solution behavior is provided.
| Unit | Concentration · rounded |
|---|---|
| M (mol/L) | 2 |
| mM (mmol/L) | 2,000 |
| µM (µmol/L) | 2,000,000 |
| nM (nmol/L) | 2e+9 |
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Concentration and dilution quantities are calculated from final solution volume and conserved solute. Unit conversion and underdetermined zero cases are explicit; no chemical handling procedure is supplied.
Solve five quantity modes and four dilution unknowns with independent L/mL choices and explicit conservation/zero constraints.
Molarity Calculator inputs and calculations remain in browser memory. No external processing API receives entered measurements, formulas, dates or financial values. Ordinary website page requests may still be logged. Clipboard access occurs only when you choose Copy Result.
Molarity is moles of solute per liter of final solution: M = n/V. It is not moles divided merely by the solvent volume added.
Yes. In the concentration mode, select mass and supply grams and a positive molar mass in g/mol. Moles are mass divided by molar mass, then concentration uses the final solution volume.
One liter equals 1000 mL. Known volumes are converted to liters before equations are applied. Dilution initial and final volume units can be chosen independently.
M₁V₁ = M₂V₂ under conservation of solute. The calculator can recover final concentration, final volume, initial aliquot volume or initial concentration while checking the dilution-only constraints.
A positive aliquot cannot be made more concentrated merely by adding solvent. Reaching exactly zero concentration from nonzero solute needs an unbounded final volume, while both zero concentrations can make an unknown volume indeterminate. These cases are explained rather than guessed.
No. It supplies mathematical quantities only, not hazardous-material handling instructions. Volumes may not be additive, and dilution calculations assume appropriate solution behavior and conservation of solute.