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Free Research Tools

Useful calculators and reference tools for scientists.

Molecular Weight Calculator

Calculate molar mass from a chemical formula.

H₂O→18.015g/mol

Molarity Calculator

Calculate solution concentration from amount and volume.

100 mmol / 500 mL→0.200 M

Dilution Calculator

Calculate stock or final concentration and volume.

1 M→100 mM

Built for scientists

Designed for real laboratory calculations, not general-purpose arithmetic.

Accurate & transparent

Based on standard scientific formulas and published reference data (IUPAC 2021).

Instant

Calculations run entirely in your browser — no server round-trip, no delay.

Always free

No signup, no paywall, no usage limits on these research tools.

Working with experimental data?

Create publication-ready scientific figures.

From Excel or CSV to Nature-quality figures in seconds — no coding required.

Create a scientific figure