Convert 400 ct to g

How to convert carats to grams

1. Formula: grams = carats × 0.2
2. Put in the value: 400 carats.
3. Result: 80 grams.

Carats to grams table

Converting the other way: grams to carats

carats = grams × 5. So 80 grams is back to 400 carats; one gram is 5 carats. See the grams to carats table.

Quick estimate in your head

For a rough answer, multiply by about 0.2: 400 × 0.2 ≈ 80 g, against the exact 80 g (0.0% out). Good enough to check that a calculated result is sensible.

Common mistakes

The usual slip is using the factor the wrong way round. A carat is smaller than a gram, so the number of grams must come out smaller than the number of carats. If your answer goes the other way, divide instead of multiplying.

About the units

Carat (ct) and gram (g) are both units of mass. One carat equals 0.2 grams, and one gram equals 5 carats. Results on this page are rounded for display; the conversion itself uses the exact definitions.

Mass conversions come up in cooking and baking, shipping and luggage limits, body weight, medicine doses and buying food by weight.

400 carats in other units

The most readable unit for this amount is ounces (2.821917).

• 80,000 mg
• 80 g
• 0.08 kg
• 0.00008 t
• 2.821917 oz
• 0.17636981 lb
• 0.01259784 st
• 0.00008818 ton

How this answer was calculated

The result is worked out from the numbers in this page's address when the page is opened, using exact arithmetic wherever possible and rounding only for display. Nothing is copied from a printed table. If you think an answer is wrong, please tell us through the contact page and we will check it.

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