How to Create: Weight Converter

Learn how to create a weight converter using HTML and JavaScript.

Weight Converter

Enter a value in any field to convert between weight units:

Create a Weight Converter

Create an input element that can convert one weight unit to another.

Step 1 - Add HTML:

Example - Convert pounds to kilograms

<p>
  <label>Pounds</label>
  <input id="inputPounds" type="number" placeholder="Pounds"
  oninput="weightConverter(this.value)" onchange="weightConverter(this.value)">
</p>
<p>Grams: <span id="outputGrams"></span></p>

Step 2 - Add JavaScript:

Example - Convert pounds to kilograms

/* Convert the value from pounds to kilograms when the input field receives input. */
function weightConverter(valNum) {
  document.getElementById("outputGrams").innerHTML = valNum / 0.0022046;
}

Try it yourself

Convert pounds to other units of measurement

The following table shows how to convert pounds to other weight units:

Description Formula Example
Convert pounds to kilograms kg=lb/2.2046 Try It
Convert pounds to ounces oz=lb*16 Try It
Convert pounds to grams g=lb/0.0022046 Try It
Convert pounds to stone st=lb*0.071429 Try It

Convert kilograms to other units of measurement

The following table shows how to convert kilograms to other weight units:

Description Formula Example
Convert kilograms to pounds lb=kg*2.2046 Try It
Convert kilograms to ounces oz=kg*35.274 Try It
Convert kilograms to grams g=kg*1000 Try It
Convert kilograms to stone st=kg*0.1574 Try It

Convert ounces to other units of measurement

The following table shows how to convert ounces to other weight units:

Description Formula Example
Convert ounces to pounds lb=oz*0.0625 Try It
Convert ounces to kilograms kg=oz/35.274 Try It
Convert ounces to grams g=oz/0.035274 Try It
Convert ounces to stone st=oz*0.0044643 Try It

Convert grams to other units of measurement

The following table shows how to convert grams to other weight units:

Description Formula Example
Convert grams to pounds lb=g*0.0022046 Try It
Convert grams to kilograms kg=g/1000 Try It
Convert grams to ounces oz=g*0.035274 Try It
Convert grams to stone st=g*0.00015747 Try It

Convert stone to other units of measurement

The following table shows how to convert stone to other weight units:

Description Formula Example
Convert stone to pounds lb=st*14 Try It
Convert stone to kilograms kg=st/0.15747 Try It
Convert Stone to Ounces oz=st*224 Try It
Convert Stone to Grams g=st/0.00015747 Try It