Most Popular Fitness & Exercise Calculators
Max Heart Rate Calculator by Age – Free MHR Estimator
Free max heart rate calculator — estimate MHR by age with Tanaka, Fox, and Gulat...
Sprint Calculator: Pace, Speed, Time & Split Converter
Free sprint calculator to find pace, speed, and splits for 60m, 100m, 200m, and ...
Walking Calorie Calculator — Incline & Flat Ground Burn
Free walking calorie calculator with incline for treadmill or hills. Enter weigh...
Treadmill Calorie Calculator
Free treadmill calorie calculator with speed, incline, and duration. See calorie...
Heart Rate Zone Calculator – Heart Rate Zones Calculator
Get Zone 1–5 targets from Max HR or lactate threshold. This heart rate zone calc...
Bench Press Calculator — 1RM Max, Sets & Plate Math
Use our bench press calculator to estimate your 1RM from reps and weight, auto‑b...
All Fitness & Exercise Calculators
5K Pace Calculator — Splits, Finish Time & Pace Zones
Train smarter with the 5K pace calculator: convert goal time to precise per-km a...
Agility Calculator for T‑Test and Pro Agility (5‑10‑5)
Use our agility calculator to time T‑Test and pro agility shuttles, compare atte...
Speed, Agility & Power — Athletic Performance Calculator
Analyze running pace, race predictions, strength 1RM, and jump power in one athl...
Bench Press Calculator — 1RM, Strength Level & Training
Free bench press calculator to estimate your one-rep max (1RM), compare strength...
Bench Press Calculator — 1RM Max, Sets & Plate Math
Use our bench press calculator to estimate your 1RM from reps and weight, auto‑b...
Calorie Burn Calculator for Exercise and Activities
Estimate calories with the calorie burn calculator (calories burned calculator)....
Deadlift Calculator — 1RM, Working Sets & Plate Math
Use our deadlift calculator to estimate your one‑rep max (1RM), build accurate w...
Endurance Calculator – Pace, Time, and Distance Planner
Plan aerobic training with our endurance calculator. Solve pace, time, or distan...
Half Marathon Pace Calculator – Race Splits & Time
Plan your 21.1 km race with the half marathon pace calculator: convert goal time...
Heart Rate Calculator: Target Zones & Max HR Guide
Use our heart rate calculator to estimate max HR, heart rate reserve, and smart ...
Heart Rate Zone Calculator – Heart Rate Zones Calculator
Get Zone 1–5 targets from Max HR or lactate threshold. This heart rate zone calc...
Injury Recovery Calculator: Plan Timelines & Milestones
Use our injury recovery calculator to estimate timelines, plan milestones, and s...
Marathon Pace Calculator – Race Splits & Finish Time
Use our marathon pace calculator to set a 42.195 km goal with precise per‑km and...
Max Heart Rate Calculator by Age – Free MHR Estimator
Free max heart rate calculator — estimate MHR by age with Tanaka, Fox, and Gulat...
Mile Pace Calculator – Accurate Pace per Mile & Splits
Enter distance and time to see your pace per mile, per kilometer, and speed in m...
MPH Calculator: Speed and Pace Converter for Runners
Use our mph calculator to convert speed and pace in seconds. Instantly switch be...
Muscle Recovery Calculator: Estimate Time to Rebuild
Estimate recovery time with the muscle recovery calculator. It blends sets, inte...
One Rep Max Calculator — 1RM, Sets, RPE & Plate Math
Estimate strength fast with our one rep max calculator (1RM). Enter weight and r...
Pace Converter Calculator: Min/Mile to Min/Km & MPH
Free pace converter calculator to convert running pace between min/mile, min/km,...
Post‑Workout Recovery Calculator: Cooldown & Refuel
Use the post workout recovery calculator for a cooldown, hydration, protein and ...
Race Pace Calculator: Finish Time, Splits & Speed Guide
Enter any distance to get precise target splits. This race pace calculator produ...
Recovery Calculator: Readiness Score & Rest Time Guide
Use our recovery calculator to turn sleep, soreness, stress, RPE, and heart data...
Rep Max Calculator – Rep Calculator for 1–12RM Training
Use our rep calculator to turn a set’s weight and reps into predicted maxes from...
Rest Day Calculator: Find Your Ideal Recovery Days
Use the rest day calculator to plan recovery with training load, soreness, sleep...
Rest Time Calculator: Set & Interval Plans for Workouts
Use the rest time calculator to set recovery between sets and intervals. Choose ...
RPE Calculator: Set Training Intensity & Load Accurately
Use our RPE calculator to turn effort into clear training targets. Plan the righ...
Running Calorie Calculator: Calories by Pace & Time
Use the running calorie calculator to estimate calories by pace and time. Enter ...
Running Pace Calculator: Speed, Splits, and Finish Time
Convert time, distance, and pace instantly with the running pace calculator. Get...
Sprint Calculator: Pace, Speed, Time & Split Converter
Free sprint calculator to find pace, speed, and splits for 60m, 100m, 200m, and ...
Free Squat Calculator — 1RM, Strength Standards & Training
Free squat calculator to estimate your one-rep max, compare your strength-to-bod...
Squat Max Calculator – 1RM Squat – Quick Results Today
Estimate your 1RM squat accurately with the squat max calculator and get percent...
Strength Level Calculator — Benchmark Lifts by Bodyweight
Use our strength level calculator to rank your squat, bench, deadlift and overhe...
Superset Calculator: Plan Pairings, Rest, Time & Volume
Use our superset calculator to pair A-B exercises, set reps, weight, tempo and r...
Target Heart Rate Calculator
Use our target heart rate calculator to set safe, effective zones for fat burn, ...
Training Volume Calculator: Sets × Reps × Load Tracker
Use our training volume calculator to total sets × reps × load per exercise, ses...
Treadmill Calorie Calculator
Free treadmill calorie calculator with speed, incline, and duration. See calorie...
VDOT Calculator – Daniels Training Paces – Get Quick Results
VDOT calculator: get your VDOT score and Daniels training paces. Enter a race ti...
Estimate Jump Height & Power — Vertical Jump Calculator
Use our vertical jump calculator to estimate jump height from reach difference o...
VO2 Max Calculator — Estimate Fitness Level Online, Free
Use our VO2 max calculator to estimate aerobic capacity from a 12‑minute run, a ...
Walking Calorie Calculator — Incline & Flat Ground Burn
Free walking calorie calculator with incline for treadmill or hills. Enter weigh...
Wilks Score Calculator
Free wilks score calculator to compare powerlifting strength across body weights...
Workout Calculator: Build Training Plans that Progress
Use our workout calculator to plan sessions, pick exercises, set reps and sets, ...
Zone 2 Heart Rate Calculator – Aerobic Training Zone
Use our zone 2 heart rate calculator to find your aerobic training range by HRma...
Total Tools
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Why Use Our Fitness & Exercise Calculators?
Our fitness and exercise calculator collection features 43 tools for calculating max heart rate, heart rate training zones, sprint pace, bench press one-rep max (1RM), walking and treadmill calories burned, and running performance metrics. These calculators use established exercise science formulas — including the Tanaka and Karvonen equations — to help you train smarter and track progress accurately.
Who Are These Calculators For?
Runners, cyclists, weightlifters, and anyone following a structured training program. Coaches and personal trainers use our heart rate zone and 1RM calculators for programming, while recreational athletes use the calorie burn and pace calculators to track workout intensity.
How Our Calculators Work
Enter your age, weight, workout duration, or lift numbers, and get instant results calibrated to your fitness level. Heart rate calculators use the Tanaka formula (208 - 0.7 x age) for max heart rate and Karvonen method for training zones. Strength calculators use the Epley and Brzycki formulas for 1RM estimation.
Key Benefits
- Medical-grade accuracy based on WHO and CDC guidelines
- Instant results with detailed explanations and recommendations
- 100% private — all calculations run locally in your browser
- No registration, no personal data collected
Frequently Asked Questions
How do I calculate my maximum heart rate?
What are heart rate training zones?
How many calories does walking burn?
How do I calculate my bench press one-rep max?
How accurate are treadmill calorie counters?
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