Free calculators

Fitness & health tools

Add your details once at the top — BMI, calories, macros, fiber, micronutrient references, hydration, and session burn all update automatically. Estimates only; not medical advice.

Your details

Used for every calculator on this page. Switch units anytime — we convert internally.

For math below: 70.0 kg · 175 cm

BMI

From your profile weight and height (adult screening ranges).

Result

22.9

Category: Normal range

BMR & TDEE

Mifflin–St Jeor using your profile (sex, age, weight, height, activity).

BMR

1,649 kcal/day

TDEE (maintenance)

2,556 kcal/day

Rough deficit targets: −250 kcal/day ≈ mild loss · −500 kcal/day ≈ ~0.5 kg/week trend for many adults (individual results vary).

Protein, carbs, fat & fiber

Maintenance-style targets from your TDEE and weight: ~1.6 g protein/kg, ~28% calories from fat, remainder carbs. Fiber from sex + calorie heuristic.

Protein

112 g

~448 kcal

Carbohydrates

348 g

~1392 kcal

Fat

80 g

~716 kcal

Totals align to your TDEE (~2,556 kcal). Adjust protein up if you are cutting or training hard; talk to a dietitian for medical needs.

Fiber (daily target)

Higher of general adequate intake for your sex or ~14 g per 1000 kcal from your TDEE.

38 g / day

Micronutrients — typical adult reference amounts

Based on common 19–50 adult RDAs / adequate intakes (US-style). Your sex from the profile selects iron and a few gender-specific rows; not a personalised prescription.

NutrientDaily target (general)
Protein (RDA minimum)56 ghigher if training
Vitamin A900 µg RAE
Vitamin C90 mg
Vitamin D15 µg (600 IU)many adults need more; check labs
Vitamin E15 mg
Vitamin K120 µg
Thiamin (B1)1.2 mg
Riboflavin (B2)1.3 mg
Niacin (B3)16 mg NE
Vitamin B61.3 mg
Folate400 µg DFE
Vitamin B122.4 µg
Calcium1000 mg1300 mg for women 51+ / men 71+
Iron8 mgpremenopausal women higher need
Magnesium400 mg
Zinc11 mg
Potassium3400 mg
Sodium< 2300 mgupper limit; lower if hypertension

Calories burned (session)

MET × your profile body weight × duration.

Body weight: 70.0 kg

Estimated burn

291 kcal

Daily water (guideline)

~35 ml per kg of body weight from your profile. Adjust for heat and training.

Target (approx.)

2,450 ml / day

10.4 US cups (8 fl oz)

One-rep max (estimate)

Epley formula from a submax set (reps 1–15). Enter the weight you lifted, not your body weight from above.

Estimated 1RM

70.0 kg

154.3 lb

Disclaimer: These tools provide general estimates only. They are not medical advice. For health conditions, pregnancy, or personalised nutrition, speak with a qualified professional.