---
title: "1 mg to g = 0.001 g"
description: "1 milligram is 0.001 grams. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/1-mg-to-grams/
site: "At One Place"
---

# 1 mg to g

**1 milligram in grams: 1 mg = 0.001 g**

g = mg × 0.001

1 milligram is 0.001 grams. To get there, multiply by 0.001.

## Values either side

*Milligrams near 1, converted to grams.*

| Milligrams | Grams |
| --- | --- |
| 0.5 mg | 0.0005 |
| 1 mg ← | 0.001 |
| 1.5 mg | 0.0015 |
| 2 mg | 0.002 |
| 2.5 mg | 0.0025 |
| 3 mg | 0.003 |

## How the conversion works

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

## Common questions

### What is 1 mg in grams?

1 mg is 0.001 g.

### How do you convert milligrams to grams?

Multiply by 0.001.

## Related pages

- [Milligrams to grams](https://atoneplace.net/convert/mg-to-grams/)
- [1 g to mg](https://atoneplace.net/convert/1-grams-to-mg/)
- [0.5 mg to g](https://atoneplace.net/convert/0-5-mg-to-grams/)
- [1.5 mg to g](https://atoneplace.net/convert/1-5-mg-to-grams/)
- [2 mg to g](https://atoneplace.net/convert/2-mg-to-grams/)
- [2.5 mg to g](https://atoneplace.net/convert/2-5-mg-to-grams/)
- [3 mg to g](https://atoneplace.net/convert/3-mg-to-grams/)

## 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/)