Weight Converter
Convert kilograms, pounds, ounces, stones and grams.
✓ Professional standard Uses precise SI and internationally agreed conversion factors for accurate, standards-based results.
Weight Converter is a free online converter from Toolinza. Convert kilograms, pounds, ounces, stones and grams. It runs entirely in your browser — your data is never uploaded — needs no signup, and works on any device. Toolinza offers 274+ free tools used by people across the UK, USA, Canada, Australia, the EU, India, Pakistan, the Middle East and worldwide.
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About the Weight Converter
Weight conversions come up constantly — a recipe in ounces, a parcel priced by the kilo, body weight in stones or pounds. Getting them right matters most in the kitchen and when shipping, where a mistake costs money or ruins a bake.
This Weight Converter switches between kilograms, pounds, ounces, stones and grams using exact factors, so your figures are always spot on.
How to use the Weight Converter
- Enter the weight you want to convert.
- Select the unit you are converting from.
- Select the unit you are converting to.
- Read the converted weight instantly.
Key features of the Weight Converter
- Converts kg, pounds, ounces, stones and grams
- Exact conversion factors
- Two-way conversion
- Ideal for cooking and shipping
- Private — calculated in your browser
How the Weight Converter works
Every conversion uses the exact, internationally agreed factors defined by the International System of Units (SI) and recognised standards bodies. Temperature conversions apply the correct formulas rather than simple multipliers, and results retain full precision so they are suitable for scientific, engineering and everyday use alike.
All conversions are calculated instantly in your browser.
Tips & best practices
- A handy anchor: one kilogram is about 2.2 pounds.
- For baking, use grams for accuracy rather than volume measures, and convert precisely.
- Remember a stone is 14 pounds when converting body weight.
Standards & accuracy
Uses precise SI and internationally agreed conversion factors for accurate, standards-based results.
Results are accurate to standard conversion factors. For everyday use you can round sensibly; for scientific, medical or engineering work, keep the full precision the tool provides.
Who uses the Weight Converter?
- Converting recipe weights
- Working out parcel and shipping weights
- Tracking body weight across unit systems
- Study and everyday measurement
Privacy & security
The Weight Converter runs entirely inside your web browser. Your data — whether that is a file, figures or text — is processed on your own device and is never uploaded to a server, stored or shared. There is no signup and no account, so you can use it as often as you like while keeping full control of your information. This makes it a safe choice even for confidential and sensitive work.
Why choose Toolinza?
- 100% free — no hidden charges, watermarks or usage caps.
- Private & secure — your data stays on your device.
- Standards-compliant — accurate results suitable for the UK, USA, Canada, Australia, EU, India, Pakistan, the Middle East and worldwide.
- Works everywhere — desktop, tablet and mobile.
Frequently asked questions
One kilogram is approximately 2.2046 pounds. The converter uses the exact factor for precise results.
Yes. It converts between kilograms, pounds, ounces, stones and grams in any direction.
Grams give the most accurate, repeatable results for baking. Convert recipe weights to grams for consistency.
Yes. The Weight Converter is completely free with no signup, no watermarks and no usage limits. Toolinza is supported by unobtrusive advertising so every tool stays free.
Absolutely. This tool runs entirely in your browser — your data and files are never uploaded to any server, so everything stays private on your own device.
No. The Weight Converter works instantly in any modern web browser on desktop, tablet and mobile — Windows, macOS, Linux, Android and iOS.