Numbers behind every workout, body, and clinical decision.
Body comp, calorie targets, macro splits, cycle tracking, clinical risk — measured, not guessed.
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All 286 health & fitness calculators, A-Z
Filter by name, or open a topic to see what's inside. Every tool in this category is listed here.
Clinical · 190
Diet & Nutrition · 28
Fitness & Performance · 24
Mental Health · 9
Weight Loss · 23
Hand-picked starters.
Macros that match your goal.
Set a daily calorie target and dial in the carbs / protein / fat split — see grams update on a live radial doughnut.
Daily Calorie & Macro Target
Drag calories + macro percentages. Protein, carbs, and fat grams plus the doughnut chart update in real time.
Protein Intake
0.8–1.0 g/lb body-weight target for lean-mass retention or hypertrophy.
~150g175 lb · maintenanceEvery performance number — strength, cardio, body comp, and field tests.
TDEE, heart-rate zones, 1RM, and VO₂ max — pick the training intent and the math follows.
Fitness Profile
Score yourself on cardio, strength, mobility, endurance, and recovery. Radar maps your shape against the recommended baseline.
5-Zone HR Map
Max HR (220 − age) drives Z1 → Z5 training bands.
TDEE Calculator
Total daily energy expenditure from age, weight, and activity — compare Mifflin-St Jeor vs Katch-McArdle side by side.
Bigger than one calculator? Follow the flow.
Multi-step paths that string the right health tools together in the order most people actually use them — with your numbers carried from step to step.
Body comp, deficit, projection.
The classic energy-balance rule behind every deficit and projection number here.
BMI Calculator
Body Mass Index by height/weight with category bands — and a clear note on the metric's limitations for muscular builds.
Body Fat %
Navy tape-measure method estimates body-fat percentage from neck, waist, and height.
~18%athletic rangeA timeline for every trimester.
Conception, pregnancy weight, and labor readiness mapped by week — pick the stage and the right tools surface.
Cycle, conception, first trimester.
Map ovulation windows, calculate the official due date, and confirm conception math from your last period.
Growth curve & weight gain.
Track pregnancy-weight against IOM guidelines and follow week-by-week development milestones.
Confirmation & fertility planning.
Confirm early pregnancy with hCG doubling, time implantation, and plan IVF transfer dates.
Risk & lab interpretation.
Blood Pressure Stage
Systolic + diastolic in, AHA category + monitoring cadence out — Normal → Crisis on the same axis.
A1C → eAG
Convert A1C % to estimated average glucose and 3-month band.
5.7%eAG 117 · prediabetes lineCardiovascular risk, scored the way guidelines do it.
Validated cardiac and vascular instruments — risk equations, arrhythmia and bleeding scores, heart-failure and thrombosis stratification, and haemodynamic indices.
Turning a lab panel into a usable number.
Corrections, ratios and derived indices from routine chemistry, haematology, renal and hepatic panels — including clearance estimates, osmolality, anion gap and electrolyte adjustments.
Getting the dose and the rate right.
Weight- and surface-area-based dosing, infusion and drip rates, unit conversions between formulations, opioid and steroid equivalence, and renal dose adjustment.
Structured scoring for the rest of the clinical picture.
Severity, triage and screening instruments across respiratory, neurological, gastrointestinal, renal, obstetric, paediatric and critical-care settings.
Sleep, stress, mood & anxiety.
Sleep Cycle Calculator
Pick your wake time. Bedtimes for 4, 5, 6, and 7 cycles drop out (90 min each + 15 min fall-asleep buffer).
Sleep Debt
Accumulated deficit from your target hours per night, with recovery timeline.
~5 hrsweekly debt · 2 nights to recoverTwo good options? See the head-to-head.
The health vocabulary, decoded.
Every definition links to the calculator that puts the term to work. Browse the full glossary →
BMR = 10·kg + 6.25·cm − 5·age + sMifflin-St Jeor — the resting-burn equation behind most calorie targets (s = +5 for men, −161 for women).Max HR ≈ 208 − 0.7 × ageThe Tanaka estimate of maximum heart rate — the anchor every training zone is cut from.BMI = kg / m²Weight scaled to height squared — the screening index behind every weight-category chart.Frequently asked questions
Are these calculators medical advice?
No. Every health calculator on Calculover is educational. Reference ranges follow current guidelines (ACSM for fitness, ADA for A1C, ACC/AHA for blood pressure and cholesterol, ACOG for pregnancy), but interpreting a number against your actual health is something only your clinician can do. Use these to prepare for the conversation, not to replace it.
Which metric should I track for weight loss?
TDEE (your daily burn) plus a 300–500 kcal deficit is the lever; BMI is a screening tool, not a goal. Body fat % is more meaningful than weight alone if you're also training. The Weight Loss Science guide walks through which number to anchor when.
How current are the reference ranges?
Reference ranges are refreshed within 7 days of the relevant society's guideline update (e.g., ACC/AHA blood-pressure stages, ADA A1C diagnostic thresholds). Each calculator footer shows the year and last-verified date.
Are the formulas different for women, athletes, or older adults?
Yes — many calculators expose population-specific formulas. BMR has Mifflin–St Jeor (default) and Katch–McArdle (lean-mass-based, for athletes). Body fat has Navy, Jackson–Pollock, and DXA-derived options. Each calculator names the formula it's using and links to the source paper.
What if I'm pregnant or trying to conceive?
The Women's Health cluster has ovulation tracking, conception-date math, pregnancy due-date by LMP or conception date, and pregnancy-weight-gain targets. The Pregnancy Journey flow walks through which calculator to use at each trimester.
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