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Basalmetabolism (BMR) kalkylator

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At a glance

  • Your Basal Metabolic Rate (BMR) is how many calories your body uses for basic functions at rest.

  • BMR is influenced by factors like your age, sex, weight, height, and muscle mass.

  • It is estimated using a formula based on your physical characteristics.

  • Knowing your BMR can help you manage your weight or understand your metabolism.

  • Online calculators provide an estimate, but individual metabolism varies.

  • For tailored advice, speak with a GP, dietitian, or nutrition professional.

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Vad är basalmetabolisk hastighet?

Din basala ämnesomsättningshastighet (BMR) är antalet kalorier din kropp använder för att upprätthålla grundläggande funktioner som andning, cirkulation och cellreparation - även när du inte gör någonting alls. Det är grunden för ditt dagliga energibehov och ett viktigt första steg i att hantera din vikt, planera din kost eller förstå din ämnesomsättning.

Allas BMR är olika. Det påverkas av faktorer som ålder, kön, vikt, längd och kroppssammansättning. Att känna till din BMR kan hjälpa dig att förstå hur många kalorier din kropp behöver för att fungera och är särskilt användbart om du försöker gå ner i vikt, behålla vikten eller gå upp i vikt på ett hälsosamt sätt.

BMR is typically estimated using a scientific formula. The most widely accepted method is the Mifflin-St Jeor-ekvationen, vilket ger en tillförlitlig uppskattning baserat på dina fysiska egenskaper.

För män:
BMR = (10 × vikt i kg) + (6.25 × längd i cm) – (5 × ålder i år) + 5

För kvinnor:
BMR = (10 × vikt i kg) + (6.25 × längd i cm) – (5 × ålder i år) – 161

This formula gives you the number of calories your body needs to function at rest. It does inte include calories burned through physical activity, which is why BMR is often used as a starting point for calculating your Total daglig energiförbrukning (TDEE), the full picture of how many calories you burn each day.

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Flera faktorer påverkar din BMR, och att förstå dem kan hjälpa dig att bättre hantera ditt energiintag och dina hälsomål:

  • Ålder – BMR decreases as you get older, due to a natural loss of muscle mass and slower metabolism

  • Kön – Men generally have a higher BMR than women, largely because of differences in muscle mass and hormone levels

  • Vikt och längd – Larger individuals tend to have a higher BMR, as their bodies require more energy to function

  • Muskelmassa – Muscle tissue burns more calories at rest than fat tissue, so individuals with more muscle typically have a higher BMR

  • Genetik – Some people are naturally predisposed to have a faster or slower metabolism

  • Hormonella tillstånd – Thyroid function and other hormonal imbalances can significantly affect metabolic rate

  • Temperatur och miljö – Being in cold climates or experiencing fever may increase your BMR as the body works harder to maintain its core temperature

BMR calculators use well-established formulas to provide en nära uppskattning of your resting calorie needs. However, no online calculator can be perfectly accurate because individual metabolism is influenced by many factors, some of which are difficult to measure without medical testing.

För att förbättra noggrannheten:

  • Use your nuvarande vikt och längd

  • Choose the formula appropriate for your kön

  • Beräkna om din BMR när din kropp förändras

  • Treat the result as a utgångspunkt, inte ett fast antal

If you're managing a medical condition, or looking for tailored advice about weight loss or nutrition, it's best to speak with a qualified Allmänläkare, dietist eller näringsspecialist. De kan hjälpa till att tolka din BMR i samband med din allmänna hälsa och livsstil.

Need weight loss treatment?
Complete a simple online consultation through Patient.info, available 24/7
All consultations are reviewed by UK registered clinicians, powered by Evaro - a UK regulated healthcare service supporting over 2 million patients. Treatments can often be delivered next day.

Vanliga frågor

What is the difference between Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE)?

Your BMR is the number of calories your body needs to perform essential functions when you are at rest, such as breathing and circulation. TDEE, on the other hand, is the total number of calories you burn each day, which includes your BMR plus the calories expended through physical activity and exercise.

Do I need to recalculate my BMR if my body changes?

Yes, it is recommended to recalculate your BMR if your body changes. As BMR is influenced by factors like weight, height, and muscle mass, changes in these areas will affect your BMR. Regularly updating your BMR calculation helps ensure it remains a useful estimate for your energy needs.

Does being in a cold environment affect my BMR?

Yes, being in cold climates can increase your BMR. Your body has to work harder to maintain its core temperature, which requires more energy and thus raises your basal metabolic rate.

Why do men generally have a higher BMR than women?

Men typically have a higher BMR than women. This is largely due to differences in muscle mass and hormone levels between sexes, as muscle tissue burns more calories at rest than fat tissue.

Can hormonal issues impact my BMR?

Yes, hormonal conditions can significantly affect your metabolic rate. For example, thyroid function and other hormonal imbalances are known to influence how many calories your body uses.

If I have more muscle, will my BMR be higher?

Yes, if you have more muscle mass, your BMR will generally be higher. This is because muscle tissue burns more calories at rest compared to fat tissue, meaning individuals with more muscle require more energy to function.

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Patientinformatikteamet

The Patient.info Informatics Team ensures our medical content and tools are accurate, evidence-based, and aligned with trusted NHS and NICE guidance.

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Patientinformatikteamet

The Patient.info Informatics Team ensures our medical content and tools are accurate, evidence-based, and aligned with trusted NHS and NICE guidance.

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