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SCIENCE LAB
Parse a chemical formula and look up atomic weights in a bundled periodic-table subset. Supports nested parentheses, multipliers, and common element symbols.
WHAT THIS DOES
Runs entirely in your browser.
/tools/molar-mass-calculatormolar-mass-calcv4.0.0LOCAL · LOCAL RUNIMPLEMENTED — This workbench is functional in the current release.Presets for this workbench
No preset yet. A preset stores the values in this form — never the result — and only for workbenches that run entirely in your browser.
Collections
Saved on this device only. Turn on sync to carry them to another device.
BATCH / ONE VALUE PER LINE
Up to 200 lines, one at a time, in this browser. Each line takes the place of formula and everything else stays as you set it. Nothing is uploaded, and the row limit is not exceeded silently.
METHOD / LOCAL RUN
Recursive descent over a small chemical formula parser. Atomic weights are bundled for elements 1–92.
Boundary: Educational use. A bundled atomic-weight table is not authoritative for legal, safety, or analytical chemistry.
The calculation or transformation runs in your browser using the values entered above. No input is sent to UtilityForge for this tool.
EXAMPLES / LOCAL RUN FIXTURES
FAQ
No. The molar mass calculator runs entirely locally.
The workbench states the exact method behind every result — the formula or procedure this page runs — so you can verify the computation instead of trusting a black box.
No. This workbench runs in the page: Chemical formula are read by the code your browser already downloaded, and UtilityForge receives neither the values nor the result.
Yes, and it is enforced rather than advertised: Chemical formula (200 characters). The limit is a browser input limit on a tool that runs on this device, so nothing is truncated after being sent anywhere.
Educational use. A bundled atomic-weight table is not authoritative for legal, safety, or analytical chemistry.
RELATED TOOLS
LOCAL — Runs entirely in your browser.
COMMON USE CASES / SOURCE NOTE
Last reviewed:
Source information: Bundled atomic-weight subset and local formula parser.