20 grams heavy? Not much. It is about the weight of an AA battery or an adult house mouse. In plain terms, 20 grams is 0.02 kilograms, or about 0.7 ounces.
This guide shows 10 everyday objects that weigh about 20 grams. You will also see 20 grams in other units, plus how it compares with 20 mg and 20 g of water.
Table of Contents
How Heavy Is 20 Grams? Quick Conversions
How heavy is 20 grams? It equals 0.02 kg, per CalculateMe. The formula is simple: 20 g × 0.001 = 0.02 kg.
A gram (g) is a unit of mass in the metric system. It equals one thousandth of a kilogram, per Wikipedia. 20 Grams Heavy
| Unit | Value of 20 grams |
|---|---|
| Milligrams | 20,000 mg |
| Kilograms | 0.02 kg |
| Ounces | about 0.705 oz |
| Pounds | about 0.0441 lb |
| Stone | about 0.0031 st |
| Percent of a kilogram | 2% |
How much is 20 grams in ounces? About 0.7 oz. One ounce is 28.35 grams, so 20 grams is roughly 70% of an ounce.
Here is an easy way to remember it. Fifty lots of 20 grams make 1 kilogram.
10 Common Everyday Objects That Weigh About 20 Grams
Weights below are approximate unless noted. Brands and sizes vary.
AA battery. An alkaline AA weighs about 24 grams, per The Measure of Things. It is the closest battery to 20 grams.

Adult house mouse. A mouse weighs about 21 grams. The normal range is 12 to 30 grams.

Compact disc (CD). A CD weighs about 15 grams. It is a bit lighter than 20 grams.

Four US nickels. Each nickel is 5 grams, so four make exactly 20 grams. The US Mint lists the spec.

Eight US pennies. Each penny is 2.5 grams, so eight make 20 grams.
Once you have a clear picture of what 20 grams feels like, it’s interesting to see how familiar objects compare at a much heavier weight. For a bigger everyday reference, explore these 300-gram objects and see what weighs about 300 grams.

Five standard dice. One die weighs about 4.1 grams. Five weigh about 20.5 grams.

Twenty US dollar bills. Each bill is about 1 gram, per Omni Calculator. Twenty bills weigh about 20 grams.

Four sheets of US Letter paper. A 20 lb sheet weighs about 5 grams. Four sheets come to about 20 grams.

One tablespoon of honey. It weighs about 21 grams. Honey is dense, so it outweighs a tablespoon of water.

20 milliliters of water. It weighs about 20 grams. More on that below.

Coins are exact because the US Mint sets their weight. The battery, mouse and honey are close estimates.
Is 20 Grams a Lot? 20 Grams vs 20 mg vs 20 g of Water
Is 20 grams a lot? It depends on what you are weighing.
For objects, 20 grams is light. It is less than one ounce, so a standard letter fits well under the first-ounce postage limit.
For food, it can add up. Four grams of sugar equal about one teaspoon, so 20 grams of sugar is about 5 teaspoons. The American Heart Association advises added sugar of no more than 36 grams a day for most men and 25 grams for most women and children over 2.
How heavy is 20 mg? It equals 0.02 grams, or 0.00002 kg. That is one thousandth of 20 grams. A single grain of table salt weighs roughly 1 mg, so 20 mg is about 20 grains.
How heavy is 20g of water? It is about 20 milliliters. That is roughly 4 teaspoons, or 1.35 tablespoons. It is also less than one fluid ounce.
Water has a density near 1 gram per milliliter. That is why grams and milliliters match so closely.
| Amount | Weight |
|---|---|
| 20 mg | 0.02 g |
| 20 g | 0.02 kg |
| 20 kg | 20,000 g |
You can also check 20 grams without a scale. Balance four nickels or eight pennies against an item on a homemade balance.
FAQs
How heavy is 20 grams?
It is 0.02 kg, or about 0.7 oz. An AA battery or four nickels will give you a feel for it.
Is 20 grams a lot?
Not for objects, since it is under an ounce. It can be a lot for some nutrients, like sugar.
How heavy is 20 mg?
It is 0.02 grams. That is one thousandth of 20 grams.
How heavy is 20g of water?
About 20 milliliters, or roughly 4 teaspoons.
Conclusion
20 grams is light but easy to spot. Four nickels and an AA battery are the best everyday references.










