Daily Calorie Calculator for United Kingdom
Estimate maintenance calories and moderate goal ranges from age, body size and activity. The calculator uses the Mifflin-St Jeor BMR equation plus standard activity multipliers.
Enter your details to estimate maintenance calories and moderate planning ranges.
What This Calorie Calculator Estimates
Your body needs energy for basic functions such as breathing, circulation and temperature regulation, and it uses additional energy for movement, work, exercise and digestion. This calculator first estimates your Basal Metabolic Rate (BMR) with the Mifflin-St Jeor equation, then multiplies it by an activity factor to estimate Total Daily Energy Expenditure (TDEE).
The maintenance number is the approximate daily intake that may keep body weight relatively stable if the activity estimate is close to your real routine. Because calorie needs vary from person to person, the result should be treated as a starting estimate rather than a prescription.
Why activity level matters
Activity is usually the least precise part of an online calorie calculator. Two people with similar height and weight can have very different daily movement. Choose the option that reflects your average week, not your busiest day. If your real-world weight trend does not match the estimate over several weeks, your true maintenance need may be different.
Moderate planning ranges
The result includes modest percentage-based ranges below and above estimated maintenance. These are intentionally conservative reference values. People with diabetes, pregnancy, chronic illness, a history of eating disorders, or clinical nutrition needs should not use a generic calculator as a substitute for personalised care.
Calorie Calculator United Kingdom: FAQs
How many calories do I need per day?
There is no single number for everyone. Daily needs depend on age, body size, sex-specific equation constants and activity. Use the calculator above for an estimate, then treat your real-world body-weight trend and professional advice as more important than a calculator alone.
What is the difference between BMR and calories per day?
BMR estimates energy use at rest. Daily calorie needs include BMR plus movement and activity, which is why maintenance calories are normally higher than BMR.
Is this the same as TDEE?
The maintenance result is an estimate of TDEE. If you want a page focused specifically on total daily energy expenditure and activity multipliers, use the TDEE Calculator United Kingdom.
Can I use United Kingdom foods with this result?
Yes. Calories are units of energy regardless of cuisine. The challenge is portion estimation. Foods such as roti, rice, daal, curries, oils, ghee, milk, tea and snacks can vary widely depending on serving size and preparation.