How many calories do I need per day?

It depends on your age, sex, weight, height, and activity level. The average adult needs 2,000–2,500 calories. Use this calculator for your personalised figure.

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health

Calorie Calculator

Calculate your Total Daily Energy Expenditure (TDEE) and find exactly how many calories you need to lose weight, maintain, or gain muscle.

Calorie CalculatorFree · No signup

Weight (kg)

Height (cm)

Age

Sex

Activity Level

Goal

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Find out exactly how much water you should drink daily based on your weight, activity level, and climate.

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About This Calculator

Our Calorie Calculator is designed specifically for UK businesses and individuals. All calculations use current 2025/26 rates and follow UK guidelines.

This tool is completely free to use with no signup required. You can use it as many times as you like. The results are instant and calculated in your browser — no data is sent to our servers.

Also known as

calorie calculatorTDEE calculatordaily calorie needs calculatorhow many calories should I eatcalorie deficit calculatorweight loss calculator

Frequently Asked Questions

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⚕️BMI→😴Sleep→💧Water Intake→

Last updated: 1 April 2026 · Rates for 2025/26 tax year