BODY UP - BM2521 Track your body composition with total ease
Follow your body composition easily with the Tefal Body Up Body Fat Scale. With so much more than just weight tracking, keep tabs on your fat mass and BMI with a convenient and reliable tool that couldn't be easier to use: a large crystal-clear LCD display, storage capacity of up to 8 profiles with automatic user recognition, and a sleek glass weight platform with a modern aesthetic. Measure the evolution of your weight and BMI to perfectly monitor your body and health.

Reference: BM2521V0

  • Weight, fat mass and BMI indicator

    By using bioelectrical impedance analysis, keep close tabs on your body composition (fat mass in percentage). More than just weight—enjoy all the benefits of this smart analysis tool for your weight and BMI evolution.

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    Large display

    A large screen makes this scale practical and easy to use, to keep tabs on your health day after day with total ease.

  • Track the whole family

    Store up to 8 profiles, to allow health and weight tracking for the whole family, with automatic user recognition for convenience and ease-of-use.

  • High capacity

    Weigh limits up to 150 kg (330 lbs).

  • Precise results

    Enjoy total accuracy down to the last detail, with measurements in 100 g (0.2 lbs) graduations for reliable results.

  • Ready to use right out of the box

    For immediate use, a high-performance CR3032 lithium battery is included inside the scale, to put you on the path toward total weight and health tracking in no time.

Fat mass measure in Kg    
Sensitive key board    
Memories 8  
Capacity 150  kg
Graduation 100  g
Weighing platform Tempered glass  
Colours Black  
Battery type CR 2032  
Batteries included    
Unit battery weight 3  g
Instructions & Manual
Frequent questions
This function allows an immediate weight display. It is not necessary to wait for the "0" to display - the weight calculation begins immediately.
Most of the recent bathroom scales have a switch on the battery location if not, look at the instruction manual.
To be fully satisfied with this appliance, measuring and weighing must always be conducted under the same conditions:
• Always weigh yourself in bare feet. Your feet must be dry and properly positioned on the electrodes. Beware that if your feet have too much hard skin the measurement may be affected.
• preferably once a week first thing in the morning,
• 1/4 of an hour after waking up, so that the water in your body is distributed in the lower limbs.
It is also important to ensure that there is no contact between the legs (thighs, knees, calves) or between the feet. If necessary, slip a sheet of paper between your legs.
It depends on which type of scale you use:
- Diagnostic scale: the measure will be distorted.
- Other bathroom scale: no impact on the measurement.
Always keep your scale flat and do not place any objects on the platter.
If you will not be using the scale for a long time, remove the batteries.

If the scale is stored vertically with one or more feet in the air or if objects are left on the scale, the first measurement will be incorrect.
You may see an "ERR" message and a long beep at the end of the weighing operation. You will need to weigh yourself again.
To ensure correct measurements, you should place your scale on a hard, flat surface and not on a soft floor such as a rug or carpet.
For accurate and consistent results, we recommend that you use your scale under the same conditions and at the same time. Ideally, you should weigh yourself on an empty stomach 15 minutes after getting up, so that the water in your body is distributed to your lower limbs.

Avoid weighing yourself:
• During or just after heavy physical activity.
• Immediately after a shower, bath or sauna session.
• When you have consumed alcohol.
• When you have a fever.

To ensure proper monitoring of body composition, it is recommended to weigh yourself regularly, ideally once a week.
We recommend always using new alkaline batteries (LR03 batteries), and never using saline batteries (R03 batteries) or rechargeable batteries (HR03 batteries).
When changing the batteries, always replace all batteries with new alkaline batteries.
This does not apply to scales using CR2032 button batteries or lithium batteries.
You can clean your scale with a lint-free cloth lightly dampened with water.
Do not use a metal sponge or scouring powder. Never immerse the device in water.
It is normal for the "8888" message to be displayed when batteries are inserted. The product is in the initialisation phase. Place it on a flat surface and wait for the message to clear. Moving or stepping on it while “8888” is displayed will restart initialisation. Initialisation can take from 5 to 30 seconds.
The scales have detected an anomaly whilst weighing and are recalibrating. You will need to step off the scales and wait for "0.0" to be displayed before stepping on again.
The virtual keyboard is only activated once weighing is complete.
Here are the rules to follow:
• Step off the product once weighing is complete,
• The product must remain on the ground when tapping the keys,
• Only tap the keys with one finger,
• Only use a finger to tap the keys (no objects).
If, after following the instructions in the user manual, your scale still does not work, do not attempt to disassemble or repair it yourself and take it to an authorised service centre.
Yes, a diagnostic scale measures the lean body mass and by deducting it from the total body mass, gives the overall body fat regardless of where it is located.
During the bathroom scale manufacturing calibration some variations could appeared from one scale to another. Some differences coming from these variations could appear if you compare your weight on two different bathroom scales.
Essential to the proper functioning of your body, measuring it allows you to be alerted in case of too low hydration.
Composed of body water, organs, bones and muscles, its role is not negligible on the daily energy expenditure.
Essential to your body, it is an energy reserve to watch.
The BMI is an international index, defined by the WHO in 1997.
The BMI indicates your level of corpulence and thus the risk of being overweight. It is measured as follows:

The BMI is very global and not very personalized. It does not determine the value of fat mass or muscle mass.
Our scales use bioelectrical impedance, also known as bio-impedance.

A sinusoidal current of low intensity is sent in your body, this current easily crosses the tissues rich in water (lean mass: muscle, skin...), on the contrary, it meets more resistance at the level of the tissues poor in water (fat mass).

The resistance thus obtained, coupled with equations taking into account your profile, allows us to calculate your lean mass.

The fat mass is obtained by subtracting the lean mass from your total weight.
Your appliance contains valuable materials which can be recovered or recycled. Leave it at a local civic waste collection point.
Please go to the “Accessories” section of the website to easily find whatever you need for your product.
Find more detailed information in the Guarantee section of this website.
If you believe that one part is missing, please call Consumer Services Center and we will help you find a suitable solution.
Yes, the weight of the clothes is added to the body fat. For this reason, it is recommended to weigh yourself with as little clothing as possible.
The scale is designed to be suitable for most people. However, you should not use the scale if you have a pacemaker or other medical device. This is because the scale sends a small electrical current through your body to measure your body fat, which can harm or interfere with a pacemaker (or other medical device).
As a precaution, the use of the scale is contraindicated during pregnancy due to the bio-impedance device. However, you can use the scale as long as you keep your socks on. In this way, no current will flow through your body. You will then be able to obtain your weight but none of the other indicators of your body composition.