Calorie Calculator for Women
Estimate how many calories a woman needs each day, adjusted for age and activity. The Mifflin-St Jeor equation already uses a female-specific formula, so your result reflects female physiology.
Your details
How your number is built
Resting vs total burn
Women generally need fewer daily calories than men of the same age and height because women carry a higher proportion of body fat and less lean muscle, and muscle burns more energy at rest. This calculator uses the female version of the Mifflin-St Jeor equation, which subtracts 161 from the base formula, so the number you see is tuned to female metabolism rather than a one-size-fits-all figure.
Does the menstrual cycle change how many calories you burn?
Only slightly. Resting energy expenditure rises a little in the luteal phase, the roughly two weeks after ovulation, typically by about 2.5 to 10 percent. In practical terms that is often under 100 calories a day, which is well within the margin of any calculator estimate. It is usually not worth manually adjusting your target for it.
Appetite and cravings tend to increase premenstrually, which matters more than the small metabolic bump. If you track intake, expect hungrier days near your period and plan satisfying, protein-rich meals rather than trying to override the hunger.
Calorie needs after 50 and during menopause
Calorie needs decline with age for everyone, and the drop is steeper for many women around menopause. Falling estrogen is linked with a loss of muscle mass and a shift of fat toward the abdomen, both of which lower the number of calories the body burns at rest. A woman who maintained on 2,000 calories at 35 may maintain on closer to 1,700 to 1,800 at 60 at the same activity level.
The most effective response is resistance training two to three times a week to preserve muscle, plus adequate protein, rather than simply eating less. Recalculate your target every few years, and whenever your weight or activity changes noticeably, so it keeps pace with your body.
Pregnancy and breastfeeding are different
This calculator is for non-pregnant, non-breastfeeding women. Pregnancy adds roughly 340 calories a day in the second trimester and 450 in the third, and breastfeeding adds around 330 to 400, but those needs should be guided by your clinician. If that applies to you, use our pregnancy calorie calculator and speak with your healthcare provider.
Frequently Asked Questions
Most adult women maintain their weight on roughly 1,600 to 2,400 calories a day, according to U.S. dietary guidance, with active and younger women at the higher end. Your personal maintenance number is your TDEE, shown above once you enter your age, height, weight, and activity.
Set the goal to lose and the calculator subtracts 500 calories from your maintenance level, which supports about one pound of loss per week. It will not drop your target below 1,200 calories a day, the safety floor for women, without a note, because eating less than that is hard to sustain and risks muscle loss.
On average women have less lean muscle and more body fat than men of the same weight, and muscle is more metabolically active. The female Mifflin-St Jeor formula reflects this by subtracting 161 calories from the male baseline, which is why a woman and a man with identical stats get different results.
Fewer than in her 20s and 30s. A sedentary woman over 50 often maintains on about 1,600 calories, while an active woman of the same age may need closer to 2,000 to 2,200. Muscle loss and hormonal changes around menopause lower resting burn, so recalculate as you age.
You do not have to, but many women feel hungrier in the days before their period. The small rise in metabolism is usually under 100 calories a day. Rather than forcing a set number, honor genuine hunger with filling, protein-rich foods and let intake even out across the month.
1,200 is the lowest this tool will recommend, and it suits only shorter or very sedentary women pursuing weight loss. Most women feel better and lose weight more sustainably on more than that. If your calculated deficit falls below 1,200, choose a smaller deficit or speak with a dietitian.
These results are estimates for general educational purposes only and are not medical or nutritional advice. Individual needs vary. Consult a qualified healthcare professional or registered dietitian before making significant changes to your diet, especially if you are pregnant, breastfeeding, under 18, or have a medical condition.