About this weight converter
Convert kilograms, grams, pounds, ounces and stones. Values convert through kilograms using international avoirdupois definitions: one pound is exactly 0.45359237 kg, one ounce is one sixteenth of a pound, and one stone is 14 pounds. Use this workspace to prepare a result you can review before putting it to use. All processing takes place on your device, without an account or an upload of your inputs. Check the examples to understand the expected output, read the limitations for the supported scope, and reset the form when you want to start a separate task.
How it works
Values convert through kilograms using international avoirdupois definitions: one pound is exactly 0.45359237 kg, one ounce is one sixteenth of a pound, and one stone is 14 pounds.
Try these examples
1 kg → g
1000 g
1 lb → kg
0.45359237 kg
Limitations & privacy
Nonnegative values up to 1 trillion. This converts mass; it does not calculate gravitational force. Display uses up to 15 significant digits; floating-point rounding still applies.
Inputs and results stay in this browser. Only tool identifiers are stored for your recently used tools. You can clear that history from the directory.
A few good questions
How is the result produced?
Values convert through kilograms using international avoirdupois definitions: one pound is exactly 0.45359237 kg, one ounce is one sixteenth of a pound, and one stone is 14 pounds.
Are my inputs sent to a server?
No. Inputs and results are processed locally and are not uploaded or included in telemetry. Copying or downloading is your choice.
What are the limits of this tool?
Nonnegative values up to 1 trillion. This converts mass; it does not calculate gravitational force. Display uses up to 15 significant digits; floating-point rounding still applies.
Updated September 19, 2026