How precise is the gram scale?

It is an estimate from a photo, not a measurement. For small items the error is often a few grams, which can be a large share of a 3 g ring. If you need to price gold or silver, or measure anything to the tenth of a gram, use a physical jewelry scale.

Can I weigh items under 10 grams?

You can get an estimate, but the lighter the item, the larger the relative error. Put a coin of known weight next to it (a US nickel is 5 g) so the AI has a size and weight reference.

Is this the same as the homepage scale?

The homepage is the general online scale for everyday objects of any size. This page is tuned for small things and lists reference weights in the 1 to 25 g range.

How can I make the estimate more accurate?

Place a known object in the frame as a scale reference. A US nickel weighs exactly 5 g and a quarter 5.67 g, so including one gives the AI a fixed point to calibrate against.

What about heavier objects?

For anything bigger than a hand, use the general online scale on the homepage, which covers everyday objects from a few grams to several kilograms.

Gram Scale Online for Small Items

Jewelry, coins, letters, and other things that weigh a few grams

For small objects in the 1 to 100 g range: rings, coins, keys, batteries, a letter. Upload a photo for an AI estimate, then sanity-check it against the reference weights below. A photo cannot match a real 0.01 g jewelry scale, so treat the number as an estimate.

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How It Works

Take or Upload a Photo

Snap a picture of the object you want to weigh or upload one from your gallery.

AI Analyzes Weight

Our AI identifies the object and estimates its weight using visual analysis.

Get Instant Results

Receive accurate weight estimation in grams, ounces, or pounds instantly.

Small everyday objects like coins and a battery being weighed in grams by phone

Weight of Common Objects in Grams

These everyday objects have standardized weights, so they double as handy calibration references or a way to gut-check an estimate. Keep one in frame to help the AI judge scale.

Object	Weight
US paperclip	1 g
Sheet of A4 paper	5 g
US penny (1983 and later)	2.5 g
US dime	2.268 g
US nickel	5 g
US quarter	5.67 g
Sugar packet	4 g
AAA battery	11 g
AA battery	24 g
Standard house key	15 g
Credit card	5 g
US dollar bill	1 g

Coin weights are US Mint specifications. Use a coin in your photo as a scale reference for better accuracy.

Weighing Things That Weigh Almost Nothing

Small objects are the hardest case for any scale. A kitchen scale with 1 g steps cannot tell a 2.3 g ring from a 2.9 g one, and a photo estimate is coarser still. What a photo can do is put an item in the right range: is that chain closer to 5 g or 20 g? That is often enough to decide postage, compare two items, or check a listing.

Use Coins as Free Calibration Weights

US coins are minted to fixed weights: a penny made after 1982 is 2.5 g, a dime 2.268 g, a nickel 5 g, and a quarter 5.67 g. Put one next to the item in the photo and the AI gets both a size reference and a weight reference. You can also use coins to check a cheap pocket scale: five nickels should read 25 g.

When You Need a Real Jewelry Scale

Selling gold, measuring medication, or dosing anything by weight needs a calibrated scale with 0.01 g resolution. Those cost little and are far more accurate than any photo. Use this page for a quick estimate and the reference table, not for transactions.