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Laboratory solution concentration calculator

Unit arithmetic for laboratory solutions. You enter every number; nothing is pre-filled or suggested. Use a decimal point (2.5, not 2,5).

Choose a calculation

Sample mass and solvent volume to concentration.

Result

Enter your numbers and choose Calculate.

Formulas

  • Concentration: mg/mL = mass (mg) ÷ volume (mL). µg/mL = mg/mL × 1000.
  • Solvent volume: volume (mL) = mass (mg) ÷ target concentration (mg/mL).
  • Aliquot volume: volume (mL) = mass wanted (mg) ÷ solution concentration (mg/mL). µL = mL × 1000.
  • Molar: mM = mg/mL ÷ molecular weight (g/mol) × 1000.
  • Units: 1 mg = 1000 µg. 1 mL = 1000 µL.

Research use only. For laboratory research use only. Not for human or veterinary use. This page performs unit arithmetic on the numbers you enter and gives no recommendations about amounts. Check results against your own protocol and records. Molecular weights in the product list are the values shown on each product page.