Calorie Calculator for Women Over 40: How Many Calories to Lose Weight

How many calories do you really need? After 40, the answer often changes. This free calorie calculator for women estimates your maintenance calories (also called TDEE), the calories your body burns at rest (BMR), and a safe calorie deficit if you want to lose weight.

Want to see your exact deficit and goal date? Try our calorie deficit calculator.

In perimenopause or past menopause? Try our menopause calorie calculator.

Enter your age, height, weight and activity level in US or metric units.

Calorie Calculator for Women Over 40: How Many Calories to Lose Weight

Estimate how many calories you burn each day, and how many to eat to maintain or lose weight.

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Please enter a realistic age, height and weight.

Uses the Mifflin-St Jeor equation for women, one of the most accurate everyday formulas. Real needs can differ by 10% or more from any estimate.

What Your Results Mean

  • Maintenance calories (TDEE): about how many calories you burn in a day, including activity. Eat this much to keep your weight steady.
  • Calorie deficit: eating about 250 calories below maintenance leads to roughly 0.5 lb of weight loss a week; about 500 calories below leads to roughly 1 lb a week. Real results vary.
  • BMR (basal metabolic rate): the calories your body uses at complete rest, just to keep you alive. Most women shouldn’t eat below this for long.

Example: Calories for a 5’4″, 160 lb Woman

AgeSedentaryLightly activeModerately active
401,6601,9002,140
501,6001,8302,060
601,5401,7601,990
701,4801,6901,910

These are maintenance calories. Notice how needs drop a little each decade and rise a lot with activity.

Why Calorie Needs Change After 40

  • Muscle loss: women gradually lose muscle with age, and muscle burns more calories than fat.
  • Menopause: changing hormones are linked with more weight around the waist and changes in how the body stores fat.
  • Less daily movement: many people simply move less as they get older, often without noticing.

The good news: strength training helps rebuild muscle, and daily walking adds up. Our walking calorie calculator shows how much.

How to Lose Weight Safely After 40

  1. Start with a small deficit of 250 to 500 calories a day.
  2. Eat enough protein to protect muscle. Use our protein calculator for women over 40.
  3. Strength train 2 or more days a week.
  4. Walk daily. Track it with our steps to miles calculator.
  5. Protect your sleep. Poor sleep affects hunger hormones. Try our sleep calculator.
  6. Check progress over weeks, not days. Weight naturally goes up and down day to day.

Don’t go too low.

Eating less than about 1,200 calories a day makes it hard for most women to get enough nutrients, and is usually only done with medical supervision.

How the Calculator Works

We use the Mifflin-St Jeor equation, which research has found to be one of the most accurate everyday formulas for estimating calorie needs:

BMR for women = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161

Your BMR is then multiplied by an activity factor (from 1.2 for sedentary to 1.725 for very active) to estimate your maintenance calories.

Frequently Asked Questions

How many calories should a woman over 40 eat?

It depends on size and activity. Many women over 40 need about 1,600 to 2,200 calories a day to maintain their weight. Use the calculator for your own estimate.

How many calories should I eat to lose weight?

Most women lose weight safely by eating 250 to 500 calories less than their maintenance number, without going below about 1,200 calories a day.

What is the difference between BMR and TDEE?

BMR is what your body burns at rest. TDEE (maintenance) adds the calories you burn moving and exercising.

Why am I not losing weight on a calorie deficit?

Estimates can be off by 10% or more, and it’s easy to underestimate food. Track honestly for 2 to 3 weeks and adjust. Talk to your doctor if your weight changes without explanation; thyroid problems and some medicines can play a role.

Does this calculator save my information?

No. Nothing is saved or sent anywhere.

Related Tools

This calculator is for general information only and is not medical advice. Talk to your doctor before starting a weight loss plan if you have a health condition. Read our Medical Disclaimer and Editorial Policy.

Sources

Health note: Content on this site is for general information only and is not medical advice. Always consult your doctor about health concerns.

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