Weight Conversion Calculator to Convert Grams, Pounds, Ounces, etc.

Weight Conversion Calculator Sign

This weight converter will convert grams (g), pounds (lbs), kilograms (kg), ounces (oz), milligrams (mg), micrograms (mcg), and U.S. tons to their most popular counterparts.

Plus, unlike other online unit converters, this calculator will show the formula it used for converting as well as the step-by-step math it used to complete the conversion.

Finally, the calculator also provides a feature that will allow you to create your own custom, printable, weight conversion chart. Just select the type you are converting from and to, enter the desired starting and ending weights, and then click the button. Cool!

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Weight Conversion Calculator

Convert standard and metric weight units for the 14 most popular conversions.

Special Instructions

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Selected Data Record:

A Data Record is a set of calculator entries that are stored in your web browser's Local Storage. If a Data Record is currently selected in the "Data" tab, this line will list the name you gave to that data record. If no data record is selected, or you have no entries stored for this calculator, the line will display "None".

DataData recordData recordSelected data record: None

Conversion type:

Select the desired conversion option. The weight conversion calculator will then rename the fields according to your selection.


Weight to convert from:

Enter the weight units to convert from the type listed on in this line.

Micrograms : equiv: equivalent: equivalent:

Weight conversion result:

This is the weight units entered above converted to the type listed on this line.

If you would like to save the current entries to the secure online database, tap or click on the Data tab, select "New Data Record", give the data record a name, then tap or click the Save button. To save changes to previously saved entries, simply tap the Save button. Please select and "Clear" any data records you no longer need.

Create Conversion Chart

Weight conversion chart:

To create a custom weight conversion chart that you can print out, enter the starting and ending weight based on the first type listed in the selected conversion type. Then click the Create Conversion Chart button. This will open a printer friendly window containing your custom weight conversion table.

BegStartStartingStarting Milligrams:

Starting units:

Enter the units you want the chart to start at.

EndEndEndingEnding Milligrams:

Ending units:

Enter the units you want the chart to stop at.

RndRoundRoundRound Micrograms to:

Round conversion units:

Select the number of places you would like the "to" values in the chart rounded to. If "None" is selected, no rounding will be performed and raw values will be entered into the chart.

Help and Tools


Common weight conversion formulas.

Weight Conversion Formula Table

The following weight conversion table lists the weight conversion formulas for the corresponding type.

Milligrams to Microgramsmg to mcgmg x 1000
Micrograms to Milligramsmcg to mgmcg x .001
Ounces to Gramsoz to goz x 28.34952
Grams to Ouncesg to ozg x .03527
Ounces to Milligramsoz to mgoz x 28349.523125
Milligrams to Ouncesmg to ozmg x .0035274
Pounds to Gramslb to glb x 453.59232
Grams to Poundsg to lbg x .00220
Pounds to Kilogramslb to kglb x .45359
Kilograms to Poundskg to lbkg x 2.20462
Pounds to Ounceslb to ozlb x 16
Ounces to Poundsoz to lboz x .06250
Pounds to US Tonslb to tonlb x .00050
US Tons to Poundston to lbton x 2000

If there is a conversion type you think should be added to the calculator, please let me know in the feedback form located beneath the calculator.

Adjust Calculator Width:

Move the slider to left and right to adjust the calculator width. Note that the Help and Tools panel will be hidden when the calculator is too wide to fit both on the screen. Moving the slider to the left will bring the instructions and tools panel back into view.

Also note that some calculators will reformat to accommodate the screen size as you make the calculator wider or narrower. If the calculator is narrow, columns of entry rows will be converted to a vertical entry form, whereas a wider calculator will display columns of entry rows, and the entry fields will be smaller in size ... since they will not need to be "thumb friendly".

Show/Hide Popup Keypads:

Select Show or Hide to show or hide the popup keypad icons located next to numeric entry fields. These are generally only needed for mobile devices that don't have decimal points in their numeric keypads. So if you are on a desktop, you may find the calculator to be more user-friendly and less cluttered without them.

Stick/Unstick Tools:

Select Stick or Unstick to stick or unstick the help and tools panel. Selecting "Stick" will keep the panel in view while scrolling the calculator vertically. If you find that annoying, select "Unstick" to keep the panel in a stationary position.

If the tools panel becomes "Unstuck" on its own, try clicking "Unstick" and then "Stick" to re-stick the panel.