All tools
Calorie, TDEE & body composition calculators
19 specialized calculators for fat loss, muscle gain, body recomposition, macros, exercise calorie burn, and nutrition planning. Each is built on the same Mifflin–St Jeor + Navy Method math as the main calculator — just framed for a specific goal.
Activity-level TDEE calculators
- Sedentary TDEE calculator Maintenance calories for desk workers and low-activity adults. The 1.2 activity multiplier in action.
- Moderately active TDEE calculator Daily calorie burn for adults training 3–5 days a week. The 1.55 multiplier in action.
- Athlete calorie calculator Daily calorie needs for athletes training 6–14 hours per week. The 1.725–1.9 multipliers in action.
Body fat percentage tools
- Body fat calculator for men Navy method body fat estimation for men with healthy ranges, visual references, and goal-based targets.
- Body fat calculator for women Navy method body fat estimation for women with healthy ranges, hormonal context, and goal-based targets.
- Body fat for visible abs What body fat percentage actually shows abs — for men, women, and across body types.
Goal-based calorie calculators
- Calorie deficit calculator Daily calorie target sized off your TDEE for sustainable fat loss without losing muscle.
- Calorie surplus calculator Modest surplus above TDEE for steady muscle gain — without the dirty-bulk fat pile.
- Maintenance calorie calculator The calorie intake that keeps your weight stable. Everything else — cuts and bulks — is just an offset from this number.
Macro calculators
- Macro calculator for weight loss Macro targets for a 400–500 kcal cut: high protein, moderate carbs, lower fat.
- Macro calculator for muscle gain Macro targets for lean bulks: solid protein, higher carbs, moderate fat.
- High-protein macro calculator Daily protein targets from 1.6 to 2.4 g/kg with food examples and meal distribution.
Nutrition calculators
Exercise calorie burn
Demographic TDEE calculators
- TDEE calculator for teenagers Calorie estimation for teenagers 13–19, factoring growth, puberty, and activity.
- TDEE calculator for seniors Calorie estimation for adults 60+, factoring sarcopenia, lower activity, and protein needs.
- Bodybuilder TDEE calculator Phase-specific calorie targets for natural bodybuilders — bulk, maintain, and cut with macros tied to lean mass.
Browse by topic cluster
Topic-focused groups for deep-dive learning.
Muscle Building
Metabolism
Weight Loss
Or just open the main calculator
Skip the topic pages and run your numbers directly — TDEE, body fat, macros, and goal calorie targets in one screen.
More from Varyense
More free calculators from Varyense
Beyond fitness — calculators for finance, energy, home, vehicles, and everyday math.
-
Fitness
Free Calorie & Macro Calculator
Calculate daily calorie targets and personalized macronutrient splits for fat loss, maintenance, or muscle gain.
Calculate Now Opens Calorie and Macro Calculator in a new tab -
Cooking
Free Air Fryer Time & Temperature Converter
Convert oven recipes to air-fryer cooking times and temperatures in seconds.
Calculate Now Opens Air Fryer Conversion Calculator in a new tab -
Math
Online Percentage Calculator
Calculate percentage increase, decrease, and ratios instantly — useful for sales, tax, tips, and quick math.
Calculate Now Opens Percentage Calculator in a new tab -
Finance
Mortgage Loan & EMI Calculator
Estimate monthly mortgage payments, interest costs, and amortization schedules for any loan term.
Calculate Now Opens Mortgage Loan Calculator in a new tab -
Energy
Appliance Energy Consumption Calculator
Estimate the kWh and dollar cost of running any household appliance daily, monthly, or yearly.
Calculate Now Opens Appliance Energy Calculator in a new tab -
Energy
Electricity Bill & Cost Calculator
Calculate the cost of running any device by wattage, hours used, and your local kWh rate.
Calculate Now Opens Electricity Cost Calculator in a new tab -
Health
Pregnancy Due Date Estimator
Estimate your due date, trimester milestones, and weekly pregnancy progress from your last cycle.
Calculate Now Opens Pregnancy Due Date Calculator in a new tab -
Finance
Retirement Corpus Planning Calculator
Project the retirement corpus you need based on lifestyle, inflation, and expected returns.
Calculate Now Opens Retirement Corpus Calculator in a new tab -
Home & DIY
Square Footage & Area Calculator
Calculate square footage for rooms, flooring, paint, or land — supports rectangles, triangles, and irregular shapes.
Calculate Now Opens Square Footage Calculator in a new tab -
Vehicle
Tire Size Comparison Calculator
Compare tire sizes, diameter changes, and speedometer impact for vehicle upgrades.
Calculate Now Opens Tire Size Calculator in a new tab -
Home & DIY
Concrete Slab Volume & Cost Calculator
Calculate concrete volume, bag count, and material cost for slabs, footings, and driveways.
Calculate Now Opens Concrete Slab Calculator in a new tab -
Weather
Snow Day Probability Predictor
Estimate the chance of school closing tomorrow based on temperature, snowfall, and region.
Calculate Now Opens Snow Day Prediction Calculator in a new tab -
Tech
AI API Token Cost Calculator
Estimate OpenAI, Claude, and Gemini API costs per request, per day, and per month for any prompt length.
Calculate Now Opens AI Token Cost Calculator in a new tab -
Energy
Household Energy Usage Calculator
Track monthly household energy usage and identify which appliances drive the highest bills.
Calculate Now Opens Energy Usage Calculator in a new tab -
Energy
Solar Panel Savings Calculator
Project solar panel payback period, monthly savings, and 25-year return on installation.
Calculate Now Opens Solar Savings Calculator in a new tab -
Energy
Personal Carbon Footprint Calculator
Estimate your annual CO₂ emissions from travel, electricity, food, and lifestyle choices.
Calculate Now Opens Carbon Footprint Calculator in a new tab
All tools are free, browser-based, and built by Varyense.