Litres (water) to Kilograms (water) (L to kg)
1 L = 1 kg. Multiply litres (water) by 1; the box below does it both ways.
1.5 L = 1.5 kg · kilograms (water) to litres (water) page
How to convert litres (water) to kilograms (water)
- Take the value in litres (water).
- Multiply by 1 (because 1 L = 1 kg).
- Example: 1.5 L × 1 = 1.5 kg.
- Going back: divide by 1, or multiply by 1.
Where this comes up
One litre of water weighs 1 kg (0.998 at room temperature), which is the assumption here. Petrol is about 0.74 kg per litre, diesel 0.83, milk 1.03, so a 20 L jerry can of petrol weighs about 15 kg, not 20. Tanker and water-supply calculations (a 1000 L tank holds a tonne) are the usual reason.
| L | kg |
|---|---|
| 0.25 | 0.25 |
| 0.5 | 0.5 |
| 1 | 1 |
| 1.5 | 1.5 |
| 2 | 2 |
| 5 | 5 |
| 10 | 10 |
| 15 | 15 |
| 20 | 20 |
| 25 | 25 |
| 50 | 50 |
| 100 | 100 |
| 500 | 500 |
| 1,000 | 1,000 |
Questions people ask
How many kilograms (water) are in 1 litre of water?
1 L = 1 kg. To convert, multiply the litre of water value by 1.
What is 15 L in kg?
15 L is 15 kg.
How do I convert kilograms (water) back to litres (water)?
Divide by 1, or multiply by 1: 1 kg = 1 L.
Does this work for oil, milk or flour?
Only approximately. The page assumes the density of water (1 g per ml). Milk is 1.03, cooking oil 0.92, honey 1.42, scooped flour about 0.55, so for anything thick, oily or powdered, weigh it instead.
More volume to weight (water) conversions
Kilograms (water) to Litres (water) (kg to L) · ml to g · g to ml · all converters
Factors are the exact international definitions at the density of water; last checked 2026-10-10.