Metric Tons to Daltons (t to Da)
1 metric ton equals 6.022140754×10²⁹ daltons (rounded).
How to convert metric tons to daltons
To convert metric tons to daltons, multiply the number of metric tons by 6.022140754×10²⁹. The factor is rounded to 10 significant digits. To go the other way, multiply daltons by 1.660539069×10⁻³⁰ (rounded).
daltons = metric tons × 6.022140754×10²⁹
Example: 10 metric tons = 6.022140754×10³⁰ daltons.
Approximate value. Standards for the dalton varied by place and period, so this converter uses the most commonly cited value. Treat results as estimates, not exact figures.
About these units
Metric Ton (t)
1,000 kilograms (about 2,204.6 lb), also spelled tonne. Used for cargo, grain and vehicle weights outside the US.
Barrels gave the tonne its name. The word goes back to a Germanic root for a large cask, the tun, and a full tun could easily weigh around a tonne. In English this became ton; the spelling tonne has been used in France since 1842, where it replaced the older tonneau, and pre-metric French tonnes were 2,000 livres, about 979 kg. Once the metric system took hold, the tonne was fixed at 1,000 kilograms, which is the mass of roughly a cubic metre of water.
The unit is accepted for use with the SI, and its symbol is a lowercase t with no period. Because it sits close to the old English ton, the two get confused: the short ton used in the US is about 10 percent lighter than a tonne, while the long ton differs by less than 2 percent. NIST calls the unit the metric ton, and the spelling tonne is rare in the US. Very large quantities are stated in prefixed forms such as the megatonne, which equals a teragram. In explosives, a tonne of TNT is taken as about 4.2 gigajoules.
1 metric ton = 1,000 kilograms (exactly).
Sources: Wikipedia: Tonne; Wikipedia: Ton; NIST Guide to the SI, Appendix B.8 (mass conversions)
Dalton (Da)
About 1.66054×10⁻²⁷ kg, one twelfth of the mass of a carbon-12 atom. Used for atoms, molecules and proteins.
Chemists and biologists quote the mass of a protein as so many kilodaltons, a habit that goes back to John Dalton, who in 1803 suggested taking the lightest atom, hydrogen, as the natural yardstick for atomic weights. The unit itself took other forms for a long time. Around 1903 chemists settled on one sixteenth of an oxygen atom, and in 1960 and 1961 the physics and chemistry unions replaced that with a carbon-12 standard, calling it the unified atomic mass unit with the symbol u.
The name dalton, symbol Da, was proposed by IUPAC in 1993 and endorsed by IUPAP in 2005. It is the same unit as u and is defined as one twelfth of the mass of a free carbon-12 atom at rest in its ground state. The 2022 CODATA value, listed by NIST and in Wikipedia, is 1.66053906892 x 10^-27 kg, with a small uncertainty in the final digits. A helium-4 atom weighs about 4.0026 Da, and the giant protein titin about 3 to 3.7 MDa. The BIPM accepts the unit for use with the SI, and the 2019 redefinition of the kilogram left its definition unchanged.
1 dalton = 1.660539069×10⁻²⁷ kilograms (approximately).
Sources: Wikipedia: Dalton (unit); NIST CODATA: unified atomic mass unit
Related conversions
- Daltons to metric tons (reverse)
- Metric tons to kilograms
- Metric tons to grams
- Metric tons to pounds
- Metric tons to ounces
- Metric tons to milligrams
- Metric tons to micrograms
- Metric tons to carats
- Metric tons to stone
- Metric tons to short tons
- Metric tons to long tons
- Metric tons to troy ounces
- Metric tons to Earth masses
- Kilograms to daltons
- Grams to daltons
- Pounds to daltons
- Ounces to daltons
See all weight & mass units.