Weight Converter
Convert a weight between milligrams, grams, kilograms, tonnes, ounces, pounds and stone. Runs entirely in your browser.
- Runs entirely in your browser
- No sign-up, no watermark
- Free and unlimited
🔒 Your file stays on your device
How to use Weight Converter
- 1
Open Weight Converter and fill in the fields.
- 2
Pick any options that apply.
- 3
Read the result straight away — it recalculates as you type.
What you get
- Metric and imperial mass units
- Exact conversion factors
- Instant, in your browser
What happens to your files
This tool runs entirely in your browser. The file you choose is read into memory, processed on your device, and offered back as a download. Nothing is uploaded and nothing is kept once you leave the page.
There is no account, no email, no watermark and no daily limit. Come back whenever you need it.
Frequently asked questions
- Is this weight or mass?
- The units are mass units. On Earth the distinction rarely matters for everyday use — 1 kg of mass weighs about 2.205 lb.