Kilogram to Gram Converter
Weight · unit-converter
Convert Kilogram to Gram with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use gram-based factors (international avoirdupois pound and metric definitions). The full Weight Converter also includes carat, grain, and US/UK hundredweight.
Calculator
From: Kilogram (kg)
To: Gram (g)
About Kilogram
The kilogram is the SI base unit of mass (defined via fundamental constants). Everyday metric weights and science use kilograms and grams.
About Gram
The gram is one thousandth of a kilogram. Recipes, lab work, and small masses typically use grams.
How to convert kilograms to grams
1 kilogram is equal to 1000 gram:
1 kg = (1000 g ÷ 1 g) g = 1000 g
Each kilogram is defined as 1000 g and each gram as 1 g, so one kg equals 1000 ÷ 1 g = 1000 g.
Let w(kg) be the numeric value of the same mass measured in Kilogram (kg), and w(g) the value in Gram (g). Then:
w(g) = w(kg) × (1000 / 1)
Equivalently, divide by how many kg fit into one g (grams per g divided by grams per kg):
w(g) = w(kg) ÷ 0.001
Or: gram = kilogram ÷ 0.001
Examples
Example #1: Convert 20 kg to gram
20 kg = 20 kg × (1000/1) g = 20000 g
20 kg = 20 kg ÷ 0.001 = 20000 g
Example #2: Convert 50 kg to gram
50 kg = 50 kg × (1000/1) g = 50000 g
50 kg = 50 kg ÷ 0.001 = 50000 g
Summary
To convert Kilogram to Gram, multiply the value in kg by the ratio of grams per kg divided by grams per g. Equivalently: value_g = value_kg × (1000 / 1). Numerically, 1 kg equals 1000 g.
Relationship context
Both units are metric (SI) and tied to the gram via the kilogram. Conversions use exact ratios from their gram definitions. The factor from Kilogram to Gram is 1.000000e+3 (1 kg = 1000 g).
Conversion tables
| Kilogram (kg) | Gram (g) |
|---|---|
| 0.1 | 100 |
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 6 | 6,000 |
| 7 | 7,000 |
| 8 | 8,000 |
| 9 | 9,000 |
| Kilogram (kg) | Gram (g) |
|---|---|
| 10 | 10,000 |
| 20 | 20,000 |
| 30 | 30,000 |
| 40 | 40,000 |
| 50 | 50,000 |
| 60 | 60,000 |
| 70 | 70,000 |
| 80 | 80,000 |
| 90 | 90,000 |
| 100 | 100,000 |