Utilities
Weight Converter
Convert a weight between milligrams, grams, kilograms, metric tonnes, ounces, pounds, and stones locally in your browser.
Convert a weight between milligrams, grams, kilograms, metric tonnes, ounces, pounds, and stones. Zero is a valid weight.
Conversions run locally in your browser; your weight is not uploaded or stored.
Convert one weight into the units you need.
Enter a non-negative weight and choose its unit to see the equivalent milligrams, grams, kilograms, metric tonnes, ounces, pounds, and stones. Zero is valid. It runs locally in your browser, so your value is not uploaded or stored.
Frequently Asked Questions
Everything you need to know about this tool, how it works, and privacy.
Which weight units can I convert?
Enter a weight in milligrams, grams, kilograms, metric tonnes, ounces, pounds, or stones. The converter returns the equivalent value in all seven units using 1 ounce = 28.349523125 grams, 1 pound = 453.59237 grams, and 1 stone = 14 pounds.
Can I convert zero or decimal weights?
Yes. Zero is a valid weight, and decimal values are accepted. Negative weights are rejected because a weight cannot be less than zero. Results show up to six decimal places when needed.
What happens with very large weights?
The converter shows an error when the entered weight is too large to convert safely, instead of returning an unreliable rounded result.
Does my weight leave my browser?
No. The conversion and copy action run locally in your browser. CodeASystem does not upload or store the value you enter.