ChemEs Calculator
Practical Calculators for Modern Chemistry.
Molarity Calculator
Find mass, volume, concentration and stock dilutions.
Open toolSolution Preparation
Prepare solutions with purity correction and weighing guidance.
Open toolMoles ↔ Grams
Convert between mass and amount with explicit units.
Open toolReaction Stoichiometry
Plan equivalents, limiting reagents and isolated yields.
Open toolGlassware Guide
Explore 26 illustrated pieces of laboratory glassware.
Open toolLaboratory Setups
Review six annotated laboratory arrangements.
Open toolFree to use. Calculations stay on your device.
KNOW YOUR EQUIPMENT
Laboratory Glassware Guide
26 original schematic illustrations. Shapes and fittings vary by manufacturer.
Educational identification references; not operating instructions. Inspect glass for damage, confirm equipment ratings and follow trained laboratory procedures.
26 pieces of equipment
About ChemEs Calculator
A browser-based chemistry workbench for researchers and students. ChemEs Calculator is a provisional brand pending domain and trademark checks.
Methodology
Calculations use explicit units and supplied stoichiometric coefficients. Molecular-weight catalogue records link to PubChem; HRMS uses monoisotopic masses and stated ion corrections. Educational diagrams are original schematics, not manufacturer drawings or operating procedures. Automated tests check arithmetic and software behavior, not universal scientific correctness.
Privacy
Normal calculations, searches and formatting run locally. Experimental data are not sent to a server. Only your theme preference is saved in localStorage; calculation inputs stay in memory during the session and reset on reload. Following an external reference link connects to that external site. The installed app caches static files and a release-check timestamp for offline access, never experimental inputs. The hosting provider receives ordinary connection information, such as IP addresses and requested file paths. No analytics or tracking scripts are included.
Beta limitations
Independently verify results before experimental or publication use. Diagrams are educational references and do not replace training, equipment manuals or approved SOPs. Offline launches expire after seven days without a verified release check. An already open session is not forcibly closed; reconnect and check for updates regularly.
Contact
A public contact channel has not yet been configured. No affiliation or certification is claimed.
How it works
Select glassware by its intended function: reaction vessels hold mixtures, condensers exchange heat, volumetric equipment measures specified volumes, and separation or filtration equipment separates phases. The guide below links to the existing 26 illustrations and their handling notes.
Example: Equipment-selection example: when preparing a solution to a specified final volume, a suitable volumetric flask defines that volume at its calibration mark. A beaker’s approximate graduations do not provide the same volumetric accuracy. Follow the equipment specification and approved procedure.
Explore the guide- Round-bottom flask
- Two-neck round-bottom flask
- Three-neck round-bottom flask
- Erlenmeyer flask
- Beaker
- Volumetric flask
- Graduated cylinder
- Separatory funnel
- Pressure-equalizing addition funnel
- Dropping funnel
- Liebig condenser
- Allihn condenser
- Dimroth condenser
- Distillation head
- Fractionating column
- Thermometer adapter
- Vacuum takeoff adapter
- Büchner funnel
- Sintered-glass funnel
- Filter flask
- Volumetric pipette
- Burette
- Glass syringe
- Schlenk flask
- Dean–Stark trap
- Rotary evaporator flask