ml to kg Converter
1000 ml of water weighs 1 kg, while 1000 ml of honey weighs about 1.42 kg. This ml to kg converter switches between milliliters and kilograms using liquid density. Pick water, milk, cooking oil, or honey, or enter a custom kg/L value when you need a different liquid.
Quick answer
kg = ml x density (kg/L) / 1000.
Water is 1 kg/L, milk is 1.03 kg/L, cooking oil is 0.92 kg/L, and honey is 1.42 kg/L. Use custom when you have a product label or spec sheet.
Result
1 kg
Density used
Water: 1 kg/L
Calculation
kg = ml x density / 1000
What this tells you
- •kg = ml x density (kg/L) / 1000.
- •ml = kg x 1000 / density (kg/L).
- •Water is 1 kg/L, so 250 ml of water is 0.25 kg.
- •The same volume can weigh more or less depending on the liquid.
How to Use
- 1Enter the amount you want to convert.
- 2Choose the direction, ml to kg or kg to ml.
- 3Pick a liquid preset or choose custom density.
- 4If you choose custom, enter density in kg/L.
- 5Read the converted amount below.
How It Works
Formula
kg = ml x density (kg/L) / 1000Milliliters measure volume and kilograms measure mass, so density connects the two. First convert milliliters to liters by dividing by 1000, then multiply by density in kg/L to get kilograms. To go the other way, divide kilograms by density and multiply by 1000 to get milliliters.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
Convert 500 ml of water to kg
500 ml is 0.5 liters. At 1 kg/L for water, 0.5 x 1 = 0.5 kg.
Convert 2 kg of cooking oil to ml
Cooking oil is about 0.92 kg/L, so 2 / 0.92 = 2.173913 liters, which is 2173.913 ml.
How 1000 ml Converts by Liquid
Common preset densities at a 1 liter volume.
| Liquid | Density (kg/L) | 1000 ml in kg |
|---|---|---|
| Water | 1.00 | 1.00 kg |
| Milk | 1.03 | 1.03 kg |
| Cooking oil | 0.92 | 0.92 kg |
| Honey | 1.42 | 1.42 kg |
Preset densities are typical room-temperature estimates. Real products can vary.
Common mistakes
- Assuming 1000 ml always equals 1 kg. That is only true for water and liquids with a similar density.
- Mixing density units. This tool expects kg/L, although g/ml has the same numeric value.
- Using a generic preset when the product label or spec sheet gives you a better density value.