Carats to Tonnes Converter
Enter a weight in carats and instantly see the equivalent in tonnes (metric tons).
Enter Weight
Result
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Enter a value to see the result
Conversion Formula
1 ct = 0.0000002 t
1 t = 5,000,000 ct
tonnes = carats × 2×10−7
Quick Reference
| Carats (ct) | Tonnes (t) |
|---|---|
| 1 | 0.0000002 |
| 100 | 0.00002 |
| 1,000 | 0.0002 |
| 10,000 | 0.002 |
| 100,000 | 0.02 |
| 1,000,000 | 0.2 |
| 5,000,000 | 1 |
Summary
Enter a weight in carats and instantly see the equivalent in tonnes (metric tons).
How it works
- Enter the weight value in carats into the input field.
- The converter applies the exact factor: 1 ct = 0.0000002 tonnes.
- The result is displayed instantly in tonnes with up to 15 significant digits.
- Copy the result with one click for use in spreadsheets or reports.
- Switch direction using the Swap button to convert tonnes back to carats.
Use cases
- Convert rough diamond or gemstone inventory weights to metric tonnes for shipping manifests.
- Reconcile jewelry store stock weights with customs declarations that use metric tonnes.
- Calculate the tonne equivalent of large gemstone parcels for insurance valuation.
- Cross-check mine production figures reported in carats against tonnage export data.
- Academic exercises or homework problems involving unit conversion in chemistry or geology.
- Commodity traders tracking precious stone volumes across markets using different weight units.
Frequently Asked Questions
Last updated: 2026-06-09 ·
Reviewed by Nham Vu