What is the weight of paint in 1 liter and its density, how to convert from kg to l
Most paint manufacturers list volume in liters and weight in kilograms on their labels. However, exceptions are not uncommon. When repairing, you will need a lot to correctly calculate the cost of materials. To solve the problem, you need to understand how the conversion from liters to kilograms is done. You can find out the weight of any paint in 1 liter thanks to the density.
Why do you need to know the mass of paint
A recalculation of the amount of paint in kilograms is necessary in cases where a technological need arises. For example, the substance will be in a non-standard container or in a tank.
Buyers or novice builders who have not yet faced such a problem are more often interested in the mass of the substance. Sometimes information can be found quickly on the Internet, but if it does not work out, the only way out of the situation is to do the math yourself.
How to calculate correctly
According to GOST, measurements are allowed only in kg / m3. Accordingly, such a value is not suitable for a solution, its volume is measured in liters, which means that a mass in kg / l is needed. This figure will be a thousand times lower than the approved one.
When you know how much a can of paint weighs, you can determine the total amount of the desired dye weight. If information about the mass and volume of the solution is obtained, this will allow a more detailed calculation of the flow rate. This approach can help save money.
Initial data required for translation
Besides the fact that the type of product affects the results of the calculation, the manufacturer is also of great importance. To perform a calculation yourself, you need the following initial data:
- density - an indicator of how much a substance is heavier than water of the same volume at a temperature of 4 degrees;
- additional substances in the composition - additives, modifiers;
- the density of the paint.
The required data can be found on the manufacturer's packaging.
Calculation formulas and error size
The least laborious way to calculate how much 1 liter of paint weighs is to take a formula from a physics class. It is known that the density can be calculated by knowing the volume and the mass. To get the mass, you must therefore transform the formula. The original version looks like this: p = m / V. In this formula:
- p is the density;
- m is the mass;
- V - volume.
Typically, in such substances, the density is between 1.2 and 1.6. This information is indicated on the fluid container.
Now you need to remember the math and redo the formula so that the desired mass becomes. It will look like this: m = V * p. This formula is simple to understand and allows you to quickly know the weight of the can. The density of the paint is an order of magnitude higher than that of water-based liquids. This suggests that the mass of a liter can will always be greater than 1 kg.
Since in home miscalculation all data may not be known, the miscalculation may not be 100% accurate. As a rule, the percentage of error does not exceed 5. If the paint is intended for household purposes, then this is not critical. For those who appreciate precision, it is better to use specialized equipment. It also gives a figure with an error, but much less, even with delicate and scrupulous work it will not make itself felt.
Example
You can use an example to determine how to calculate the weight of a solution. The first step is to find the density on the bank. It can be indicated in kg/m3 or in kg/l. In the example, a can of coating with a volume of 1 L and a density of 1.4 kg/L will be considered. It turns out that to calculate the weight you need 1l * 1.4kg / l = 1.4kg.
Sometimes you may have to miscalculate the inverse - the displacement, which contains 1 kilogram of coverage. To do this, you need: 1kg/1.4kg/l = 0.714l. To find out how many liters a kilogram of various dyes will contain, provided that the volume of the container is more than one liter, you need to use multiplication.
It is important to remember that for each coverage a separate calculation is required, taking into account the characteristics of a particular bank.
Approximate weight of different types of paints
Since the weight of the paint has already been calculated by people several times, there are indicative figures. The data also differs depending on the type of material. For convenience, the numbers are presented in the table:
| Kind of paint | Approximate weight in kilograms |
| pentaphthalic | 0,90-0,92 |
| water-based | 1,34-1,36 |
| Acrylic | 1,45-1,55 |
| Tikkurila | 1,3-1,6 |
| Primer | 1,49-1,52 |
In any case, an error of up to 5% is possible.
A mass of paint in 1 liter will be needed during construction work. There may be a little discrepancy in the calculations, but it is not critical for working from home. If we are talking about professional activities, for example, in laboratories, then it is better to choose another method of determining the mass - special equipment.