Convert 400 g to ct

How to convert grams to carats

1. Formula: carats = grams × 5
2. Put in the value: 400 grams.
3. Result: 2,000 carats.

Grams to carats table

Converting the other way: carats to grams

grams = carats × 0.2. So 2,000 carats is back to 400 grams; one carat is 0.2 grams. See the carats to grams table.

Quick estimate in your head

For a rough answer, multiply by about 5: 400 × 5 ≈ 2,000 ct, against the exact 2,000 ct (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 gram is bigger than a carat, so the number of carats must come out larger than the number of grams. If your answer goes the other way, divide instead of multiplying.

About the units

Gram (g) and carat (ct) are both units of mass. One gram equals 5 carats, and one carat equals 0.2 grams. 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 grams in other units

The most readable unit for this amount is ounces (14.109585).

• 400,000 mg
• 0.4 kg
• 0.0004 t
• 14.109585 oz
• 0.88184905 lb
• 0.06298922 st
• 0.00044092 ton
• 2,000 ct