Sports Probability, Running Pace, Cycling FTP & Strength Calculators
Accurate calculators for marathon splits, Zone 2 heart rate, cycling Watts/kg, powerlifting 1RM & DOTS scores, nutrition macros, and fair-odds probability.
BMI (Body Mass Index) & Healthy Weight Range Calculator
Calculate your Body Mass Index (BMI), BMI Prime ratio, and healthy target weight range for your height.
TDEE (Total Daily Energy Expenditure) & Calorie Deficit Calculator
Calculate your Basal Metabolic Rate (BMR), maintenance TDEE calories, and 500-calorie fat loss target.
Daily Macro Calculator (Protein, Carbs & Fat Grams)
Convert your daily calorie target into exact grams of protein (4 kcal/g), carbohydrates (4 kcal/g), and healthy fats (9 kcal/g).
Daily Water Intake & Workout Hydration Calculator (Oz & Liters)
Calculate optimal daily water intake in fluid ounces, liters, and 8-oz glasses based on body weight and exercise duration.
One-Rep Max (1RM) Bench Press, Squat & Deadlift Calculator
Calculate your estimated 1-Rep Max (1RM) and training percentages (85%, 75%) using the Epley and Brzycki strength formulas.
Running Pace Calculator (5K, 10K, Half & Full Marathon Time)
Calculate your running pace per kilometer and per mile, average speed (mph/kmh), and projected race finish times.
Intermittent Fasting (16:8, 18:6, 20:4) Eating Window Calculator
Calculate your exact daily eating window and fat-burning ketosis milestone hours for 16:8, 18:6, or 20:4 intermittent fasting.
90-Minute REM Sleep Cycle & Optimal Bedtime Calculator
Find the best bedtime to wake up refreshed between 90-minute REM sleep cycles (allowing 15 minutes to fall asleep).
Concrete Slab Cubic Yards & 80-lb Premix Bags Calculator
Calculate cubic yards of ready-mix concrete and number of 60-lb or 80-lb concrete bags needed for slabs, patios, and driveways.
Wall Paint Gallons & Primer Coverage Calculator
Calculate exact gallons of interior or exterior wall paint needed based on room perimeter, ceiling height, and coats.
Flooring, Hardwood & Tile Square Footage + Waste Calculator
Calculate total flooring square footage, waste overage (10%), boxes needed, and total material + installation cost.
Air Conditioner BTU & Tonnage Room Size Calculator
Calculate the exact cooling capacity in BTUs/hr and HVAC tons needed for any room or house square footage.
Home Solar Panel System Size (kW) & ROI Payback Calculator
Calculate required solar system size (kW), number of 400W panels, 30% tax credit savings, and payback period.
Appliance Electricity kWh Usage & Monthly Bill Calculator
Calculate daily, monthly, and yearly electricity consumption (kWh) and utility bill cost for any home appliance.
Road Trip Gas Cost, Gallons Needed & Passenger Split Calculator
Calculate total fuel cost, gallons of gas required, and cost per passenger for any driving trip distance and vehicle MPG.
EV Home Charging Cost vs. Gasoline Annual Savings Calculator
Calculate cost to charge an electric vehicle (kWh) and compare annual EV driving cost vs a gas car.
Restaurant Tip & Group Bill Splitter Calculator
Calculate tip amount, total restaurant bill with tip, and exact split per person for any group size.
Chronological Age in Years, Months, Weeks, Days & Hours Calculator
Convert your age in years and months into total months, weeks, days, hours, minutes, and approximate heartbeats lived.
Final Exam Grade Needed Calculator (Weighted Course Average)
Calculate the exact score you need on your final exam to achieve your target overall course grade.
Dog & Cat Age in Human Years Calculator (Size-Adjusted)
Convert your dog or cat's age into accurate human years accounting for rapid early maturity and breed weight class.
Sports Betting Odds Converter (American, Decimal & Implied Probability)
Convert American moneyline odds (-110, +150) and Decimal odds into exact net profit payout, total return, and implied win %.
No-Vig Fair Odds & Sportsbook Juice / Hold Percentage Calculator
Calculate bookmaker overround (vig/juice %) and strip the vig to reveal true fair win probabilities for both sides.
Parlay / Accumulator Payout & Multi-Leg Odds Calculator
Calculate combined parlay multiplier, total payout, and true parlay hit probability for 2-leg to 10-leg parlays.
Kelly Criterion Optimal Bet Sizing & +EV Edge Calculator
Calculate your Expected Value (+EV %) and optimal Full, Half, and Quarter Kelly bankroll stake size.
Sports Betting Arbitrage (Surebet) & Hedge Profit Calculator
Calculate exact stake splits across two sportsbooks to lock in a guaranteed risk-free arbitrage or live hedge profit.
VO2 Max Calculator (12-Minute Cooper Run & Race Predictor)
Estimate your aerobic VO2 Max (mL/kg/min) from your 12-minute Cooper run distance or resting heart rate.
Cycling FTP (Functional Threshold Power) & Watts/kg Calculator
Calculate your Functional Threshold Power (FTP = 95% of 20-min power), power-to-weight ratio (W/kg), and Coggan zones.
Zone 2 Heart Rate & Karvonen Aerobic Training Zones Calculator
Calculate your exact Zone 2 fat-burning aerobic heart rate and Max HR using the Karvonen Heart Rate Reserve (HRR) formula.
Powerlifting DOTS & Total Relative Strength Score Calculator
Calculate your combined Squat + Bench + Deadlift powerlifting total, pound-for-pound ratio, and DOTS strength score.
Barbell Plate Calculator (45-lb Olympic Bar Weight Per Side)
Instantly see which 45, 35, 25, 10, 5, and 2.5 lb plates to load on each side of a standard 45-lb Olympic barbell.
Pickleball DUPR & Tennis Skill Rating Win-Loss Calculator
Calculate expected point margin and DUPR skill rating movement based on your rating vs opponent team average rating.
Golf Handicap Score Differential & Net Course Strokes Calculator
Calculate your World Handicap System (WHS) 18-hole Score Differential and Course Handicap from Slope and Course Rating.
Basketball True Shooting % (TS%) & Effective FG% (eFG%) Calculator
Calculate advanced NBA basketball shooting efficiency: True Shooting Percentage (TS%) and Effective Field Goal % (eFG%).
Baseball Pitcher ERA, WHIP & Innings Pitched Stat Calculator
Calculate Earned Run Average (ERA), Walks + Hits per Inning Pitched (WHIP), and K/9 strikeout rate for baseball/softball.
Soccer / Football Season Points Pace & Goal Difference Projector
Project a football club's final 38-match league table points, Points Per Game (PPG), and title/relegation pace.
Swimming Pace per 100m & Triathlon Open-Water Finish Calculator
Calculate your swimming CSS pace per 100m and projected finish times for Sprint (750m), Olympic (1500m), and Ironman (3.8km).
Concept2 Indoor Rowing 500m Split to Watts & 2K Erg Calculator
Convert your Concept2 rowing machine 500m split time into exact mechanical Watts and projected 2,000m (2K) erg race time.
Vertical Jump Peak Power (Watts) & Dunk Reach Calculator
Calculate your explosive lower-body Sayers Peak Power (Watts) and how many inches you need to dunk a basketball on a 10-foot rim.
Athlete Daily Protein Intake Calculator for Muscle Gain & Fat Loss
Calculate optimal daily protein intake (1.6g to 2.2g per kg) and per-meal leucine synthesis targets for strength athletes.
Creatine Monohydrate Loading & Daily Maintenance Dosage Calculator
Calculate weight-adjusted creatine monohydrate saturation loading dose (0.3g/kg) and daily maintenance dose (0.03g/kg).