General Science

CGS Units Converter

Convert CGS to SI units for centimetre, gram, dyne, erg, gal, poise, stokes, barye, density, and surface tension while keeping each physical quantity separate.

Concentration Converter

Use this concentration converter to switch between ppm, ppb, ppt, ppq, mg/L, µg/L, ng/L, pg/L, g/L.

Density Converter

Convert density units between kg/m³, g/cm³, g/mL, kg/L, g/L, lb/ft³, lb/US gal, lb/UK gal, oz/in³, and slug/ft³.

Dimensional Analysis Calculator

Use this dimensional analysis calculator to build a factor-label conversion chain, inspect unit cancellation step by step.

Molar Concentration Converter

Convert amount concentration between mol/L, mmol/L, µmol/L, nmol/L, mol/m³, and kmol/m³ for chemistry reporting, assay review, and solution prep.

PPM Calculator

Convert ppm, ppb, ppt, percent, per mille, and decimal fraction with notation-only discipline, 1-in-N ratio context.

PPM to mg/L Converter

Convert ppm to mg/L or mg/L to ppm for water-quality and lab reports, with density correction for seawater, brines, solvents, and related ppb, µg/L, g/L.

Solution Concentration Converter

Convert solution strength between g/L, mg/L, µg/L, kg/L, g/mL, mg/mL, % w/v, and oz/gal for formulation and lab-prep work.