Convert Milligrams to Megatons
Convert Milligrams (mg) to Megatons (Mt) instantly and accurately.
Conversion Formula
Mt = mg × 1.000000000e-15
About Milligrams
A milligram (mg) is one thousandth of a gram (10⁻³ g). It is the primary unit for pharmaceutical dosing: aspirin tablets are typically 500 mg, ibuprofen 200-400 mg, and melatonin supplements 0.5-10 mg. Precious metal assay results and alloy compositions are specified in milligrams per kilogram (mg/kg = ppm). Nutritional labels worldwide list mineral content in milligrams - the recommended daily intake of iron is 8-18 mg, calcium 1000 mg, and sodium under 2300 mg. A grain of rice weighs about 25-30 mg, and a medium eyelash approximately 0.1 mg.
About Megatons
A megaton (Mt) equals one million metric tonnes (10⁹ kg). Nuclear weapon yields are measured in megatons of TNT equivalent: the largest weapon ever detonated, the Soviet Tsar Bomba tested in 1961, had a yield of approximately 50 Mt TNT and produced a fireball 8 km in diameter. Annual global CO₂ emissions are reported in gigatons (Gt), but regional emissions data and specific industrial sectors are quoted in megatons. The Chicxulub asteroid impact that caused the Cretaceous-Paleogene mass extinction released energy equivalent to roughly 100 million Mt of TNT.
Quick Reference Table
| Milligrams (mg) | Megatons (Mt) |
|---|---|
| 1 mg | 1 × 10-15 Mt |
| 2 mg | 2 × 10-15 Mt |
| 5 mg | 5 × 10-15 Mt |
| 10 mg | 1 × 10-14 Mt |
| 25 mg | 2.5 × 10-14 Mt |
| 50 mg | 5 × 10-14 Mt |
| 100 mg | 1 × 10-13 Mt |