Weight Converter
Convert Weight Units
Result
| Converted Weight | — |
|---|
How to Use This Weight Converter
Shipping labels, gym plates, and recipe ingredients all use different weight units—and mixing them up costs real money on freight quotes. A kilogram is not a pound, a stone is not a short ton. This converter handles metric and imperial mass units in one step.
- Enter Value. Type the weight amount you want to convert.
- Select From Unit. Pick the unit you have—kg, g, mg, metric tons, lb, oz, st, US Tons, or Imperial Tons.
- Select To Unit. Choose the target unit from the same list.
- Press Convert. Review Converted Weight in the result table.
For physics problems with force and acceleration, use the Mass Calculator. For broader unit categories beyond weight, try the Conversion Calculator.
Weight Converter Formulas and Practical Applications
All conversions normalize through kilograms as the base unit using precise factors.
Result = (Value × From Factor) ÷ To Factor
Example: 150 lb to kg → 150 × 0.45359237 = 68.04 kg. For freight, converting 2.5 metric tons to US short tons: 2,500 kg ÷ 907.185 kg per short ton ≈ 2.76 short tons.
Standard Units and Conversion Tables
- 1 kg = 2.20462 lb = 1000 g
- 1 lb = 16 oz = 453.592 g
- 1 stone = 14 lb (common in UK body weight)
- 1 metric ton = 1,000 kg = 2,204.62 lb
- 1 US short ton = 2,000 lb ≈ 907.185 kg
- 1 UK long ton = 2,240 lb ≈ 1,016 kg
Frequently Asked Questions
What is the difference between a US ton and a UK ton?
A US short ton is 2,000 pounds. A UK long ton is 2,240 pounds. Freight and mining industries specify which ton they mean—always confirm before converting shipping weights.
Why does my result show scientific notation?
Values smaller than 0.000001 or larger than 1,000,000 display in scientific notation to preserve readability and significant digits.
Is this suitable for cooking measurements?
Yes for weight-based recipes (grams to ounces, etc.). Volume conversions like cups to milliliters belong in the Conversion Calculator volume category instead.
Which units are available in the dropdowns?
Milligrams, grams, kilograms, metric tons, ounces, pounds, stones, US Tons (short tons), and Imperial Tons (long tons).
How does the conversion math work?
All values normalize through kilograms using precise conversion factors—for example, 1 lb = 0.45359237 kg—then convert to the target unit.