Milligrams to Tons
Convert milligrams (mg) to tons (t). Both measure mass and weight, and the conversion comes up in cooking, shipping, fitness work.
The Formula
``
tons = milligrams × 1e-9
milligrams = tons × 1000000000
`
One milligram is 1.0000e-9 tons, and one ton is 1,000,000,000 milligrams.
Conversion Table
| Milligrams | Tons |
|---|---|
| 1 mg | 1.0000e-9 t |
| 2 mg | 2.0000e-9 t |
| 5 mg | 5.0000e-9 t |
| 10 mg | 1.0000e-8 t |
| 25 mg | 2.5000e-8 t |
| 50 mg | 5.0000e-8 t |
| 100 mg | 1.0000e-7 t |
| 500 mg | 5.0000e-7 t |
| 1,000 mg | 1.0000e-6 t |
The Other Direction
| Tons | Milligrams |
|---|---|
| 1 t | 1,000,000,000 mg |
| 2 t | 2,000,000,000 mg |
| 5 t | 5,000,000,000 mg |
| 10 t | 10,000,000,000 mg |
| 25 t | 25,000,000,000 mg |
| 50 t | 50,000,000,000 mg |
| 100 t | 100,000,000,000 mg |
| 500 t | 500,000,000,000 mg |
| 1,000 t | 1,000,000,000,000 mg |
What Each Unit Is
Milligrams (mg) — one thousandth of a gram. The metric unit for doses and trace quantities.
Tons (t) — here the metric tonne: exactly 1,000 kilograms. From the tun, a large wine cask, whose weight became a trade standard.
A Sense of Scale
A grain of sand is about 1 mg- An aspirin tablet is 300–500 mg
- Nutrition labels use mg for sodium
- A small car is about 1.5 t
- A cubic metre of water is 1 t
- Shipping freight is priced per tonne
Precision
The factor 1e-9 is rounded. For engineering work carry more digits than the table above, and round only at the end — rounding at each step compounds.
Watch Out For
- Three different tons exist: metric (1,000 kg), US short (907 kg) and UK long (1,016 kg). This converter uses the metric tonne.
In Code
`javascript
const milligramToTon = (value) => value * 1e-9;
``
Where This Conversion Comes Up
- Cooking
- Shipping
- Fitness
- Medicine
- Manufacturing
How Many Decimals Do You Need?
Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 mg with the factor truncated at each decimal place:
| Decimals kept | Factor | 137 mg becomes | Error |
|---|---|---|---|
| 0 | 0 | 0 | 100.0000% |
| 1 | 0 | 0 | 100.0000% |
| 2 | 0 | 0 | 100.0000% |
| 3 | 0 | 0 | 100.0000% |
| 4 | 0 | 0 | 100.0000% |
The right number of significant figures is set by your input, not by the converter. If you measured milligrams to three significant figures, the answer in tons is only good to three — writing more digits claims precision the measurement never had.