Enter Mass to Convert
Converted Mass
Result: -
Overview
A mass converter is essential for cooks, scientists, engineers, or anyone working with weights in multiple unit systems. This tool converts between common units—milligrams, grams, kilograms, metric tons, ounces, pounds, stones, US tons (short), and UK tons (long). Toggle “Advanced Mode” to reveal specialized units—carats, grains, drams, slugs, and atomic mass units—ideal for jewelry, pharmaceuticals, ballistics, engineering, and scientific applications. Just select “From” and “To” units, enter a numeric value, and click “Convert” for a precise result to six decimal places.
All conversion factors use authoritative references. The design is fully responsive—use it on desktop, tablet, or mobile. No registration required.
Formula & Methodology
Conversions are performed by first converting the input value to kilograms (kg), and then converting that kilogram value into the target unit. Example: Convert 500 grams to ounces:
- Convert 500 g → kg: $$500 \times 0.001 = 0.5 \;\text{kg}.$$
- Convert 0.5 kg → oz: $$0.5 \div 0.028349523125 \approx 17.636979 \;\text{oz}.$$
Key conversion factors (to kilograms): • 1 mg = 1e−6 kg • 1 g = 0.001 kg • 1 kg = 1 kg • 1 metric ton = 1000 kg • 1 oz = 0.028349523125 kg • 1 lb = 0.45359237 kg • 1 st = 6.35029318 kg • 1 US ton = 907.18474 kg • 1 UK ton = 1016.0469088 kg • 1 carat = 0.0002 kg • 1 grain = 6.479891e−5 kg • 1 dram (US) = 0.0017718451953125 kg • 1 slug = 14.59390294 kg • 1 atomic mass unit = 1.66053906660e−27 kg
Examples
-
Convert 1000 g to pounds:
$$1000 \times 0.001 = 1 \;\text{kg},$$
$$1 \div 0.45359237 \approx 2.204623 \;\text{lb}.$$ -
Convert 5 kg to ounces:
$$5 \div 0.028349523125 \approx 176.369619 \;\text{oz}.$$ -
Convert 2 stones to kilograms:
$$2 \times 6.35029318 = 12.70058636 \;\text{kg}.$$ -
Convert 10,000 mg to carats:
$$10000 \times 1e−6 = 0.01 \;\text{kg},$$
$$0.01 \div 0.0002 = 50 \;\text{carat}.$$ -
Convert 3 slugs to pounds:
$$3 \times 14.59390294 = 43.78170882 \;\text{kg},$$
$$43.78170882 \div 0.45359237 \approx 96.506230 \;\text{lb}.$$
Frequently Asked Questions
Which basic units can I convert?
This converter supports: milligram (mg), gram (g), kilogram (kg), metric ton (t), ounce (oz), pound (lb), stone (st), US ton (short), and UK ton (long).
Which advanced units are available?
In Advanced Mode, you’ll see: carat, grain, dram (US), slug, and atomic mass unit (amu). These units are useful for jewelry, pharmaceuticals, ballistics, and scientific contexts.
How precise are these conversions?
All factors use authoritative references and results display to six decimal places. For greater precision, you can modify the JavaScript logic.
When is Advanced Mode useful?
Advanced Mode is helpful if you work in specialized fields—like jewelry (carat), ballistics (grain, slug), or atomic physics (amu). Keep it unchecked for everyday cooking or engineering.
Can I use this tool on mobile?
Yes. The design is fully responsive and optimized for mobile, tablet, and desktop. No install or signup required.