Mass Converter
Convert mass and weight units like kilograms, grams, pounds, ounces, and tons quickly and accurately.
About Mass Converter
Recipes list grams; nutrition labels list ounces; shipping invoices demand kilograms and pounds. Tooloria’s Mass Converter translates between grams, kilograms, milligrams, micrograms, metric tonnes, ounces (avoirdupois and troy), pounds, stones and short tons—all using CODATA 2018 constants. The interface lets you fix decimal places (0–6) so kitchen scales round sensibly while lab technicians keep microgram accuracy. Calculations occur locally; no ingredient list or consignment weight is uploaded. A small history stack shows your last five conversions so you can verify “net vs gross” totals on one screen. Copy any result in one click for customs forms, recipes or LIMS records.
Frequently Asked Questions
Are troy ounces included?
Yes—choose ‘oz t’ for precious metals and gem weights. The conversion uses 31.103 4768 g per troy ounce as defined by the U.K. Weights and Measures Act.
How do you round fractional pounds?
By default the tool returns a decimal (e.g., 2.75 lb). Enable “fraction mode” to see the nearest common fraction such as 2 lb 12 oz.
Can I save more than five history entries?
At the moment the list is capped to keep the UI tidy, but you can export a CSV of your session or use our REST endpoint for batch jobs.