---
title: "Micrograms to Milligrams — µg to mg converter"
description: "1 microgram = 0.001 milligrams. Convert micrograms to milligrams with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/micrograms-to-mg/
site: "At One Place"
---

# Micrograms to milligrams

**1 microgram in milligrams: 1 µg = 0.001 mg**

mg = µg × 0.001

To convert micrograms to milligrams, multiply by 0.001. The table below gives the values people look up most often, and the converter works for any number.

## Micrograms to milligrams table

*Common microgram values converted to milligrams.*

| Micrograms | Milligrams |
| --- | --- |
| 1 µg | 0.001 |
| 2 µg | 0.002 |
| 3 µg | 0.003 |
| 4 µg | 0.004 |
| 5 µg | 0.005 |
| 10 µg | 0.01 |
| 15 µg | 0.015 |
| 20 µg | 0.02 |
| 25 µg | 0.025 |
| 30 µg | 0.03 |
| 40 µg | 0.04 |
| 50 µg | 0.05 |
| 75 µg | 0.075 |
| 100 µg | 0.1 |
| 250 µg | 0.25 |
| 500 µg | 0.5 |
| 1,000 µg | 1 |

## How the conversion works

The relationship is mg = µg × 0.001. Both units measure mass, so the conversion is a fixed factor that never changes.

## Common questions

### How many milligrams are in one microgram?

One microgram equals 0.001 milligrams. mg = µg × 0.001.

### How do you convert micrograms to milligrams?

Use mg = µg × 0.001. So 10 µg is 0.01 mg.

### How many micrograms are in one milligram?

One milligram equals 1,000 micrograms, which is the reverse of the conversion above.

## Related pages

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