Ring weight
How much does an 18ct gold ring weigh?
A plain 18ct gold wedding band in UK size N weighs about 5.1g at 4mm wide and 7.7g at 6mm. 18ct gold is heavier than titanium, black zirconium, 9ct gold and palladium but lighter than platinum.
- 2mm band
- 2.6g
- 4mm band
- 5.1g
- 6mm band
- 7.7g
- 8mm band
- 10.2g
Size N, 1.6mm wall, court profile. Updated .
18ct gold ring weight by width and size
Find your size across the top and your width down the side. Every figure is a plain court band with a 1.6mm wall, the shape most wedding rings are.
| Width | H | J | L | N | P | R | T | V | X |
|---|---|---|---|---|---|---|---|---|---|
| 2mm | 2.2 | 2.3 | 2.5 | 2.6 | 2.7 | 2.8 | 2.9 | 3.0 | 3.1 |
| 3mm | 3.3 | 3.5 | 3.7 | 3.8 | 4.0 | 4.2 | 4.3 | 4.5 | 4.6 |
| 4mm | 4.5 | 4.7 | 4.9 | 5.1 | 5.3 | 5.5 | 5.8 | 6.0 | 6.2 |
| 5mm | 5.6 | 5.9 | 6.1 | 6.4 | 6.6 | 6.9 | 7.2 | 7.4 | 7.7 |
| 6mm | 6.7 | 7.0 | 7.4 | 7.7 | 8.0 | 8.3 | 8.6 | 8.9 | 9.2 |
| 8mm | 8.9 | 9.4 | 9.8 | 10.2 | 10.6 | 11.1 | 11.5 | 11.9 | 12.3 |
| 10mm | 11.1 | 11.7 | 12.3 | 12.8 | 13.3 | 13.9 | 14.4 | 14.9 | 15.4 |
Columns are UK sizes. Each one links to that size's page, with its US, EU and millimetre equivalents.
18ct gold against other metals
The same 6mm band in size N in every metal we make rings in, lightest first.
| Metal | Density | 6mm band | Against 18ct gold |
|---|---|---|---|
| Titanium | 4.5 g/cm³ | 2.2g | 29% of the weight |
| Black zirconium | 6.5 g/cm³ | 3.2g | 41% of the weight |
| 9ct gold | 11.4 g/cm³ | 5.6g | 73% of the weight |
| Palladium | 12 g/cm³ | 5.9g | 76% of the weight |
| 18ct gold | 15.7 g/cm³ | 7.7g | This page |
| Platinum | 20.1 g/cm³ | 9.8g | 1.3 times the weight |
How the wall changes the weight
Width is how far the ring runs along your finger; the wall is how thick the metal is from inside to out. Two 18ct gold rings sold as 6mm can weigh quite differently if one has a heavier wall.
| Wall | 4mm wide | 6mm wide | 8mm wide |
|---|---|---|---|
| 1.2mm | 3.8g | 5.6g | 7.5g |
| 1.6mm | 5.1g | 7.7g | 10.2g |
| 2.0mm | 6.5g | 9.8g | 13.1g |
18ct gold rings we make
18ct gold: the traditional choice. It rates Mohs 3 for surface hardness and it is hallmarked in the UK.
Every ring is made to order in your size and shows its own weight on its page.
Gold ringsAbout 18ct goldWhat is 18ct gold?Ring weight calculatorWidth guide6mm wedding rings
In 18ct gold
Rings to look at
Rings in 18ct gold, each with its own weight, price and widths on its page.
Slim band
Two millimetres of solid gold, narrow enough to sit close to an engagement ring.
Soft ridge
The face rises to a gentle ridge, so the light runs along the finger.
Rounded court
Rounded outside and rounded inside, which is the comfortable one.
18ct gold ring weight questions
- How much does a gold ring weigh?
- A plain gold wedding band in UK size N weighs about 3.7g at 4mm and 5.6g at 6mm in 9ct gold, against 5.1g and 7.7g in 18ct. 18ct is about 1.4 times the weight of 9ct, because three quarters of it is gold against three eighths. The table above gives 18ct at every width and size; the 9ct page does the same for 9ct.
- How many grams of gold are in an 18ct gold ring?
- An 18ct gold band is hallmarked 750, which means 750 parts in every thousand by weight are pure gold. A 6mm band in size N weighs about 7.7g, so it holds about 5.8g of pure gold; a 4mm band about 3.8g of the 5.1g.
- How much does an 18ct gold ring weigh in grams?
- A plain 18ct gold court band in UK size N weighs about 2.6g at 2mm wide, 5.1g at 4mm, 7.7g at 6mm and 10.2g at 8mm, with a standard 1.6mm wall. Width matters most: double the width and the weight doubles.
- How much does a wide 18ct gold wedding band weigh?
- An 8mm 18ct gold band weighs about 10.2g in size N and 11.5g in size T; a 10mm band about 12.8g and 14.4g. Wide bands in larger sizes are the heaviest rings in any metal.
- How heavy is 18ct gold?
- 18ct gold weighs 15.7 grams per cubic centimetre, so a plain 4mm band in UK size N comes to about 5.1g and a 6mm band about 7.7g.
- Is 18ct gold heavy for a ring?
- 18ct gold is heavier than titanium, black zirconium, 9ct gold and palladium but lighter than platinum, at 15.7 g/cm³. Size for size, an 18ct gold band is 3.5 times the weight of titanium.
- Does an 18ct gold ring weigh more in a bigger size?
- A little. A 6mm band weighs about 6.7g in size H, 7.7g in size N and 8.9g in size V, because a larger ring is longer all the way round. Width changes the weight far more than size does.
- How thick is an 18ct gold wedding ring?
- These weights use a standard 1.6mm wall. A 6mm band in size N comes to about 5.6g with a lighter 1.2mm wall and 9.8g with a heavy 2mm wall, so two rings of the same width can feel quite different.
- Can an 18ct gold ring be resized?
- Yes. A plain 18ct gold band can be made larger or smaller by a jeweller, the way wedding rings have always been resized. The exception is a band set with stones all the way round, where there is nowhere to cut without disturbing a stone, so on those the size is settled when you order.