Weight Converter

Convert between 100+ units of weight — metric, imperial, troy, apothecary, Asian, ancient, scientific, and cooking units.

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How to Use the Weight Converter

Enter a weight value, select the source unit from any of the 9 categories (Metric, Imperial, Troy, Apothecary, Cooking, Asian, Ancient, Scientific, Miscellaneous), and select the target unit. Results and a full conversion table appear instantly. Use the search box to filter the 100+ units by name.

About This Tool

The most comprehensive free weight converter online, featuring over 100 units across 9 categories. Convert everyday metric and imperial units, precious-metal troy weights, pharmacy apothecary measures, Asian units (jin, tael, momme, tola), ancient weights (Greek talents, Roman libra, Biblical shekels), scientific units (atomic mass, solar mass, carats), and even kitchen measures like cups of flour or sticks of butter. Use alongside the Length Converter or BMI Calculator for full measurement conversion.

Quick Reference Table

Category	Example Units
Metric	kg, g, mg, µg, tonne, quintal
Imperial / US	lb, oz, stone, grain, slug, long/short ton
Troy	troy oz, troy lb, pennyweight, mite, doite
Apothecary	apothecary lb, oz, dram, scruple
Cooking	tbsp, tsp, cup (flour/sugar/butter), pinch
Asian	jin, liang, momme, tael, tola, maund, seer, baht
Ancient	talent, mina, drachma, shekel, libra, uncia, deben
Scientific	AMU, dalton, electron mass, solar mass, carat
Miscellaneous	pood, pfund, livre, arroba, oka, batman

Frequently Asked Questions

How many units does this weight converter support?

Over 100 weight and mass units across 9 categories: Metric, Imperial/US, Troy, Apothecary, Cooking, Asian, Ancient, Scientific, and Miscellaneous historical units.

How do I convert kilograms to pounds?

Multiply the number of kilograms by 2.20462. For example, 75 kg = 165.35 lb. This converter does the math for you instantly.

What are troy ounces and when are they used?

Troy ounces (31.1035 g) are used for precious metals like gold, silver, and platinum. They are heavier than regular (avoirdupois) ounces (28.3495 g).

Are the ancient weight conversions accurate?

Ancient units are based on the best available archaeological and historical evidence. Values like the Attic Greek talent (~25.86 kg), Roman libra (~328.9 g), and Biblical shekel (~11.4 g) are widely accepted by historians.

Can I use this for cooking measurements?

Yes. The Cooking category includes tablespoons, teaspoons, cups of flour/sugar/butter, sticks of butter, and pinches — all based on standard US cooking weights.

Is registration required to use the Weight Converter?

No. The Weight Converter is free to use with no account, no email, and no limits. All 100+ unit conversions across 9 categories (metric, imperial, troy, apothecary, cooking, Asian, ancient, and scientific units) happen client-side. Use it for kitchen recipes, precious-metal valuations, or historical research without any registration.

Created by The Toobits Team · Engineering & Editorial

Toobits is built, tested, and maintained by a small independent engineering team. Every tool is written in TypeScript, runs entirely in the browser, and is reviewed against its source formulas before publication.

Editorial policy · Updated April 2026

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