Convert carats to tonnes
1 ct = 0.0000002 t — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.000 000 2t
As a fraction: 1/5000000
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1 ct = 0.0000002 t
Show this value in all 34 weight & mass units
- Megagrams Mg 0.000 000 2
- Kilograms kg 0.0002
- Hectograms hg 0.002
- Decagrams dag 0.02
- Grams g 0.2
- Decigrams dg 2
- Centigrams cg 20
- Milligrams mg 200
- Micrograms µg 200 000
- Nanograms ng 200 000 000
- Picograms pg 200 000 000 000
- Tonnes t 0.000 000 2
- Kilotonnes kt 2e-10
- Megatonnes Mt 2e-13
- Quintals q 0.000 002
- Carats ct 1
- Pounds lb 0.000 440 924 524 37
- Ounces oz 0.007 054 792 389 92
- Drams dr 0.112 876 678 239
- Grains gr 3.086 471 670 59
- Stones st 0.000 031 494 608 883 6
- Hundredweight (US)s cwt (US) 0.000 004 409 245 243 7
- Hundredweight (UK)s cwt (UK) 0.000 003 936 826 110 44
- Short ton (US)s tn 0.000 000 220 462 262 185
- Long ton (UK)s LT 0.000 000 196 841 305 522
- Troy ounces ozt 0.006 430 149 313 73
- Troy pounds lbt 0.000 535 845 776 144
- Pennyweights dwt 0.128 602 986 275
- Slugs slug 0.000 013 704 353 171 4
- Atomic mass units u 1.20442815073e+23
- Electron masss mₑ 2.19553820852e+26
- Planck masss mₚ 9189.343 669 51
- Earth masss M🜨 3.34884967014e-29
- Solar masss M☉ 1.00557086258e-34
Every row is Carat (ct) converted through the kilogram, in exact rational arithmetic.
How to convert carats to tonnes
Multiply the number of carats by 0.0000002 to get tonnes.
The exact factor is 0.0000002 — as a fraction, 1/5000000.
Carat: The metric carat: exactly 200 mg.
Carat to Tonne conversion table
| Carats (ct) | Tonnes (t) |
|---|---|
| 1 ct | 0.000 000 2 |
| 2 ct | 0.000 000 4 |
| 3 ct | 0.000 000 6 |
| 5 ct | 0.000 001 |
| 10 ct | 0.000 002 |
| 20 ct | 0.000 004 |
| 25 ct | 0.000 005 |
| 50 ct | 0.000 01 |
| 100 ct | 0.000 02 |
| 250 ct | 0.000 05 |
| 500 ct | 0.0001 |
| 1000 ct | 0.0002 |
Tonne to Carat conversion table
| Tonnes (t) | Carats (ct) |
|---|---|
| 1 t | 5 000 000 |
| 2 t | 10 000 000 |
| 3 t | 15 000 000 |
| 5 t | 25 000 000 |
| 10 t | 50 000 000 |
| 20 t | 100 000 000 |
| 25 t | 125 000 000 |
| 50 t | 250 000 000 |
| 100 t | 500 000 000 |
| 250 t | 1 250 000 000 |
| 500 t | 2 500 000 000 |
| 1000 t | 5 000 000 000 |
Frequently asked
How many tonnes are in a carat?
One carat equals 0.0000002 tonnes (ct → t). That figure is exact, not rounded.
How do you convert carats to tonnes?
Multiply the number of carats by 0.0000002 to get tonnes.
What is 1 t in carats?
One tonne is 5000000 carats.
What is 10 ct in t?
10 ct = 0.000 002 t.
What exactly is a carat?
The metric carat: exactly 200 mg.