In order to get an accurate reading when weighing anything with scales it is important that the scale is zeroed correctly and that it is weighing what is on the scale correctly as well. If you have a feeling that your scale is not giving an accurate reading because it is giving different readings every time it is important to calibrate your weighing scales in order to get a reading that is more accurate and consistent.

In order to calibrate your scale it is important that the scale is always on a flat even surface. If the scale is on an uneven surface it will give an inaccurate reading. Find the flattest place that you can to put your scale so that it will be closer to giving an accurate reading. It is also important to make sure that the scale is not sitting on a rug or mat because that could also give an inaccurate reading of weight.

Once the scale is on a flat and firm surface you need to zero the scale so that the needle is not too far above or too far under the zero. There is usually a dial that can be turned so that the needle rests on the zero marker or if you are using a digital scale it is very handy if there is a zero button that will set the digital scale back to zero. Many scales also come with a guide and an instruction manual that will tell you how to set your scale back to zero in the appropriate manner for the scale.

Once the scale is set back to zero find an item in your home that you know the weight of. Do not use something that has a varying weight like a jug of milk because the weight will change as the liquid in the bottle decreases. Using a dumb bell is a good idea because the weight of this item is known and it stays constant. Using something like a five pound dumb bell will give you an accurate reading. Place the dumb bell on the zeroed scale and write down the reading that it gives you. You should weigh the dumb bell two or three more times and average out the weights of the readings. It is always wise to seek out a professional when you are trying to accurately calibrate your scales.