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Weight converter

Weight converter: convert between grams, kilograms, ounces and pounds online, free and without signing up. Pick the From and To units, type a value and read the result as you type. Nothing is uploaded: the maths runs in your browser.

How to convert weight units online

  1. 1Type the number you want to convert
  2. 2Pick the From and To units
  3. 3Read the result, or look it up in the table
  4. The value in your unit, plus every other unit.

What happens to your numbers

  • Nothing is uploaded.The sum is done by your browser. The number you type never leaves your device.
  • Exact definitions.The pound is defined as 0.45359237 kg, and the ounce is one sixteenth of a pound.
  • Works offline.Once the tool has been opened, it needs no connection.

What you can do

  • Convert between all 4 units, with decimals and negative numbers. The result changes as you type.
  • Example: 10 grams = 0.35274 ounces.
  • Press Swap to turn the conversion around without retyping the number.
  • The table lists the value in every unit except the From unit, so one entry gives you 3 results.
  • Convert recipe and shipping weights: grams and kilograms on one side, ounces and pounds on the other.

Good to know

  • The page opens with grams as the From unit, kilograms as the To unit and a value of 1. Change either unit at any time.
  • Results show up to 10 significant digits. Very large or very small values appear in exponent form, such as 1.500000e-7.
  • Gold and silver are traded in troy ounces (about 31.1 grams). This tool uses the ordinary ounce of 28.35 grams.

Questions

Is this weight converter free?

Yes. It is free and needs no account or sign-up. Nothing you type is uploaded.

How exact is the result?

The factors are exact: 1 pound is 0.45359237 kilograms and 1 ounce is 28.349523125 grams. The result shows up to 10 significant digits.

Is an ounce here the same as a fluid ounce?

No. This converter uses the ounce of weight (avoirdupois). Fluid ounces measure volume and are in the volume converter.

Which units can I convert?

Grams, kilograms, ounces and pounds. Pick any two of them.

Related tools

How it works

Small tools that run in your browser.

Four steps

  1. Start with a file or a task

    Drop a file, search, or pick a task.

  2. The tool opens in a window

    Open as many as you like, side by side as tabs.

  3. Results collect on the right

    Drag a result into the next tool.

  4. Save when you're done

    Saved files go to your downloads.

Who uses what

Tool sets for common jobs.

Put a tool on your home screen

The icon opens that tool, like an app.

iPhone and iPad

  1. Open the tool in Safari.
  2. Tap Share (the square with the arrow).
  3. Choose “Add to Home Screen”, then Add.

Android

  1. Open the tool in Chrome.
  2. Tap the menu (⋮) at the top right.
  3. Choose “Add to Home screen” or “Install app”.

Computer

  1. Open the tool in Chrome or Edge.
  2. Click the install icon in the address bar.
  3. Choose Install.

Skills

Claude skills we use ourselves, one job each.