Free tools

Free laboratory calculators

Calculators the Al-Shaker technical team uses and recommends for everyday bench work: centrifuge speed, dilutions and solution preparation. Free to use, with the formula and a worked example on every page.

RPM to RCF Calculator
Convert centrifuge speed between RPM and relative centrifugal force (g-force) from the rotor radius.
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Dilution Calculator
Solve C1V1 = C2V2 for any unknown and generate a serial dilution table with volumes per tube.
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Molarity Calculator
Work out the mass needed for a target molarity and volume, or the molarity of a known mass, from the molecular weight.
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RPM to RCF Calculator

Dilution Calculator

Molarity Calculator

Need the equipment behind the numbers?