Fitness Calculators
Free fitness calculators to help you plan, estimate, and budget.
Back to all calculators.
Related Calculator Hubs
Specialist calculators for Hebrew birthday planning, current Copart fees, and Marine Corps PFT score aggregation.
Calculators for training and performance — running pace, heart rate zones, one-rep max, and bowling handicap.
Fitness Calculators
- VDOT Running CalculatorCalculate your VDOT running fitness score from a recent race result, using the Jack Daniels formula.
- Marine Corps PFT CalculatorTotal three official USMC PFT event scores, classify the result, and apply the 2026 combat-arms 210-point requirement.
- Productivity CalculatorCalculate labor productivity — output per hour worked — and efficiency against a target.
- Bowling Handicap CalculatorCalculate your bowling handicap from your average, basis score, and league percentage.
- Running Record CalculatorCalculate reading accuracy, error rate, and self-correction rate from a running record.
- Therapy Productivity CalculatorCalculate your therapy productivity percentage — billable minutes over paid minutes.
- Target Heart Rate CalculatorCalculate your target heart rate training zone from your age.
- Running Pace CalculatorCalculate your running pace per mile.
- Smolov Jr CalculatorGenerate a three-week Smolov Jr training table from a one-repetition maximum, training-max percentage, weekly increments and rounding interval.
- One Rep Max CalculatorEstimate your one-rep max (1RM) from a submaximal set, using the Epley formula.
Related Guides
- How to Use the Smolov Jr Calculator: The Powerlifting Peaking Program
Learn how the Smolov Jr program works — the 3-week intensity-building cycle for squat or bench press peaking — and how to use the calculator to find your working weights.
- How the Marine Corps PFT Is Scored
Learn how three PFT event scores combine to 300 points and what the 2026 combat-arms policy changes.
- How One-Rep Max Is Calculated: Formulas, Accuracy & Examples
Calculate your 1RM from submaximal lifts using Epley, Brzycki, and Lander formulas. Understand which formula is most accurate, and how to use 1RM percentages for training intensity.
- How Running Pace Is Calculated: Pace, Speed & Race Time Explained
Understand how running pace is calculated from speed, how to convert minutes-per-mile to mph, and how to predict race finish times at any distance from 5K to marathon.
- How Heart Rate Zones Work: A Beginner's Guide to Training Smarter
Understand the 5 heart rate training zones, how to calculate your max heart rate, and how each zone benefits different fitness goals — from fat burning to VO2 max improvement.