---
title: "Milligrams to Micrograms — mg to µg converter"
description: "1 milligram = 1,000 micrograms. Convert milligrams to micrograms with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/mg-to-micrograms/
site: "At One Place"
---

# Milligrams to micrograms

**1 milligram in micrograms: 1 mg = 1,000 µg**

µg = mg × 1,000

To convert milligrams to micrograms, multiply by 1,000. The table below gives the values people look up most often, and the converter works for any number.

## Milligrams to micrograms table

*Common milligram values converted to micrograms.*

| Milligrams | Micrograms |
| --- | --- |
| 1 mg | 1,000 |
| 2 mg | 2,000 |
| 3 mg | 3,000 |
| 4 mg | 4,000 |
| 5 mg | 5,000 |
| 10 mg | 10,000 |
| 15 mg | 15,000 |
| 20 mg | 20,000 |
| 25 mg | 25,000 |
| 30 mg | 30,000 |
| 40 mg | 40,000 |
| 50 mg | 50,000 |
| 75 mg | 75,000 |
| 100 mg | 100,000 |
| 250 mg | 250,000 |
| 500 mg | 500,000 |
| 1,000 mg | 1,000,000 |

## How the conversion works

The relationship is µg = mg × 1,000. Both units measure mass, so the conversion is a fixed factor that never changes.

## Common questions

### How many micrograms are in one milligram?

One milligram equals 1,000 micrograms. µg = mg × 1,000.

### How do you convert milligrams to micrograms?

Use µg = mg × 1,000. So 10 mg is 10,000 µg.

### How many milligrams are in one microgram?

One microgram equals 0.001 milligrams, which is the reverse of the conversion above.

## Related pages

- [Micrograms to Milligrams](https://atoneplace.net/convert/micrograms-to-mg/)
- [Milligrams to Kilograms](https://atoneplace.net/convert/mg-to-kg/)
- [Milligrams to Grams](https://atoneplace.net/convert/mg-to-grams/)
- [Milligrams to Tonnes](https://atoneplace.net/convert/mg-to-tonnes/)
- [Milligrams to Pounds](https://atoneplace.net/convert/mg-to-lbs/)
- [Milligrams to Ounces](https://atoneplace.net/convert/mg-to-oz/)
- [Milligrams to Stone](https://atoneplace.net/convert/mg-to-stone/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)