Ideal Weight for a 170 cm (5'7") Woman
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For a 170 cm (5'7") woman, the ideal weight is approximately 58–63 kg (128–139 lbs) according to medical formulas. The healthy BMI range gives a wider span: 53.5–72 kg (118–159 lbs). Most women at this height feel comfortable and healthy at 58–68 kg (128–150 lbs).
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For a 170 cm (5'7") woman, the ideal weight is approximately 58–63 kg (128–139 l 💪 — calculated at snapbodycalc.com
Ideal Weight Formulas for 170 cm Women
Multiple medical formulas estimate ideal body weight for women at 170 cm (5'7"). Devine formula: 61.4 kg (135 lbs) — the most commonly used in healthcare settings. Robinson formula: 60.9 kg (134 lbs) — slightly lower, validated in diverse populations. Miller formula: 61.5 kg (136 lbs) — consistent with Devine. Hamwi formula: 61.4 kg (135 lbs) — originally developed for diabetes management. These formulas cluster around 61 kg (135 lbs), but they represent a statistical average for a medium-framed woman. Your individual ideal weight depends on your frame size, muscle mass, age, and overall body composition. The healthy BMI range for 170 cm is 53.5–72.2 kg (118–159 lbs), providing a much wider band.
Real-World Weight at 170 cm for Women
Formula weights and real-world healthy weights often differ. Many women at 170 cm (5'7") are perfectly healthy at weights that formula purists might consider 'high.' A woman who does yoga and light cardio might feel great at 60 kg (132 lbs) with 24% body fat. A woman who lifts weights 4x per week might be optimally healthy at 68 kg (150 lbs) with 22% body fat — heavier than the formula suggests but with superior body composition. An athletic woman (CrossFit, competitive sports) might excel at 72+ kg (159 lbs) with 18–20% body fat. The 'ideal' weight is the one where you have abundant energy, healthy bloodwork, regular menstrual cycles, good sleep, and sustainable eating habits — not the number a formula produces.
Weight by Age for 170 cm Women
A 170 cm woman's optimal weight shifts across life stages. Ages 18–25: BMI 19–23 = 54.9–66.5 kg (121–147 lbs). Metabolism is typically highest and body naturally tends toward leanness. Ages 25–40: BMI 20–24 = 57.8–69.4 kg (127–153 lbs). Metabolism begins slowing, but this is offset by potential increases in muscle if exercising. Ages 40–55 (perimenopause): BMI 21–25 = 60.7–72.2 kg (134–159 lbs). Hormonal changes redistribute fat and may increase weight by 2–4 kg (4–9 lbs) even without dietary changes. Ages 55+ (post-menopause): BMI 22–26 = 63.6–75.1 kg (140–166 lbs). Slightly higher weight supports bone density and provides reserves during illness. These ranges reflect biological reality, not aesthetic ideals.
Body Composition: More Important Than Weight
Two women at 170 cm and 65 kg (143 lbs) can look and feel completely different. Woman A: 65 kg with 22% body fat, regular strength training, visible muscle tone, waist circumference 71 cm (28 in). Woman B: 65 kg with 32% body fat, sedentary, soft physique, waist circumference 82 cm (32 in). Same weight, same height, dramatically different health profiles. Woman A has substantially lower disease risk despite identical BMI. This is why body fat percentage and waist circumference are better health indicators for women than weight alone. Use our body fat calculator for a measurement, and aim for 18–28% body fat for optimal health — the range that supports hormonal function, fertility, bone density, and metabolic health.
Hormones, Cycles, and Weight Fluctuations
Women's weight naturally fluctuates 1–3 kg (2–7 lbs) across the menstrual cycle, which can cause unnecessary anxiety when tracking scale weight. During the luteal phase (after ovulation, before menstruation), progesterone increases water retention, and many women experience a temporary weight gain of 1–2.5 kg (2–5 lbs). This is not fat gain — it resolves within days of menstruation. To get an accurate picture of your 'true' weight, compare the same point in your cycle month-to-month (for example, always weigh on day 7 of your cycle). Alternatively, track a 28-day rolling average that smooths out cyclical fluctuations. Hormonal contraceptives can also affect weight by 1–3 kg (2–7 lbs), primarily through water retention rather than fat gain.
Practical Steps to Reach Your Target Weight
If you're a 170 cm woman aiming for your healthy weight range, start by calculating your TDEE with our calculator. For weight loss: create a 300–400 calorie deficit (approximately 0.3–0.4 kg / 0.7–0.9 lbs per week). Prioritize protein at 1.6–2.0 g per kg (0.73–0.91 g per lb) of body weight to preserve lean tissue. Include resistance training 2–3 times per week — this prevents the 'skinny but soft' outcome of cardio-only weight loss. For weight gain (underweight): add 200–300 calories above TDEE with an emphasis on strength training and protein. Monitor progress with waist circumference and how clothes fit rather than obsessing over scale weight. And remember: the range of healthy weights at 170 cm is wide (54–72 kg / 118–159 lbs), so there's no single 'right' number to chase.