Weight Converter

Convert a figure between kilograms, pounds, ounces, grams, milligrams, stones and US tons, with all seven equivalents listed underneath the moment you type.

What is the Weight Converter?

This converter takes any of seven units and expresses it in the others, pivoting everything through the kilogram: kg, lbs, oz, g, mg, stones and US tons. Strictly speaking these measure mass rather than weight, since weight is a force that changes with gravity while mass does not, but everyday scales report mass and everyday language calls it weight. The ton here is the US short ton of 907.185 kg, or 2,000 pounds, and the ounce is the avoirdupois ounce of 28.3495 g.

Key Features

• Seven units spanning milligrams to US short tons
• Stones included, converted at the standard 14 pounds each
• Quick Conversions row displays all seven equivalents at once
• A formula line restates your entry as a full equation
• Six decimal places on the main result, four on the grid

Common Use Cases

• Checking a parcel against a courier's kilogram limit before printing the label
• Logging gym lifts when the plates are metric and your program is not
• Converting a UK weigh-in given in stones and pounds into kilograms
• Reading a European grocery label priced per kilogram while shopping in pounds

How to Use the Weight Converter

1. Put your number in the Value box, which starts at 1.
2. Select the From unit, then the To unit, from the two menus.
3. Read the large result and the unit name printed directly below it.
4. Use the formula line to confirm the equation, which spells out your entry and its equivalent in full.
5. Scan the Quick Conversions cards for every other unit, or press swap to flip the two menus.

Tips for Best Results

• The ton here is the US short ton of 2,000 pounds, not the 1,000 kg metric tonne.
• Ounces are avoirdupois; gold and silver are priced in troy ounces, which are about 10 percent heavier.
• For a UK body weight, convert the stones and the leftover pounds separately, then add the two results.
• Courier limits are usually strict cutoffs, so round shipment weights up rather than down.

Why Use WiserWork's Weight Converter?

Weight is the number that decides what a parcel costs, whether a bag clears the airline counter, and how a recipe or training program translates across a border. The units are also unusually easy to confuse, since three different things are all called a ton and two different things are called an ounce. Naming the exact variant in use, and showing all seven conversions at once, makes those traps visible instead of expensive.

Who Uses the Weight Converter?

Anyone shipping something reaches for it first, from marketplace sellers pricing postage to people packing a suitcase against an airline allowance. Lifters and coaches convert between kilogram plates and pound-based programs. Shoppers, cooks and health trackers use it to reconcile grocery labels, recipe amounts and weigh-ins recorded in another system.

Frequently Asked Questions

Which units does it convert?

Seven: kilograms, pounds, ounces, grams, US tons, stones and milligrams. Every conversion goes through the kilogram, so any unit converts directly to any other.

Is a ton here metric or US?

US. It is defined as 907.185 kg, the short ton of 2,000 pounds. A metric tonne is 1,000 kg and a British long ton is about 1,016 kg, so neither is what this menu means.

What is the difference between mass and weight?

Mass is how much matter something contains and never changes. Weight is the force gravity exerts on that mass, so the same object weighs less on the Moon. Kilograms and pounds as used here are really measuring mass, though everyone calls it weight.

Why does the UK still use stones?

Britain went metric for trade but never for conversation about body weight, so people there still say 11 stone 4 rather than 71.7 kg. One stone is 14 pounds, or 6.35029 kg.

How do I enter a weight given as stones and pounds?

Convert the two parts separately and add them, since the Value box takes a single number. Alternatively, multiply the stones by 14, add the leftover pounds, and convert the total as pounds.

Are these ounces the same ones used for gold?

No. This is the avoirdupois ounce of 28.3495 g, the one used for food and parcels. Precious metals are sold in troy ounces of about 31.103 g, so a troy ounce is meaningfully heavier.

How many pounds are in a kilogram?

Just over 2.2. The converter carries the result to six decimal places, which matters when you are multiplying a per-kilogram price or working close to a shipping threshold.

Can I convert weight to volume?

No. That needs the density of whatever you are measuring, since a kilogram of feathers and a kilogram of lead occupy wildly different space. Use the volume converter for liters, gallons and cups.

Is it precise enough for shipping labels?

The conversion factors are standard and results run to six decimals, far finer than any courier's scale reads. The practical limit is your own scale, not the arithmetic.

What does the Quick Conversions section show?

It renders your entry in all seven units at once, to four decimal places, so a single figure appears as kilograms, pounds, ounces, grams, tons, stones and milligrams together.

Whether the number is going on a shipping label, a training log or a grocery comparison, the safe move is to confirm which ton, which ounce and which system you were handed before you trust it.