Weight Cut Calculator
Find the daily rate needed to make a target weight class, with a safety flag for overly aggressive cuts.
Weight to lose
Making weight safely
This calculator shows the average daily and weekly rate required to reach a target weight class by a given date. Rates under roughly 1% of bodyweight per week can generally come from genuine fat loss with disciplined nutrition; faster rates increasingly depend on water manipulation, which carries real performance and health risk if taken too far.
Aggressive same-week water cuts are a separate practice from the longer-term weight management shown here, and are best handled with an experienced coach, especially close to competition.
Where these numbers come from
The formulas and default values in this calculator are based on:
- General combat sports weight-management guidance recommending gradual weight loss (under ~1.5% of bodyweight per week) over rapid, water-based cutting
These are planning estimates for training purposes. Check with a coach, trainer, or physician before starting a new program or maxing out.
Frequently asked questions
Is a fast weight cut dangerous?
Aggressive, especially water-based, cuts close to competition carry real risks including dehydration, impaired cognitive function, and reduced performance if not managed carefully by an experienced team.
Should I try to make weight from fat loss alone?
It's the safer, more sustainable approach when there's enough time, generally producing better performance on competition day than a large last-minute water cut.
What if I need to lose more than this calculator suggests is safe?
Consider moving up a weight class, extending your preparation timeline, or working directly with an experienced coach or sports medicine professional rather than pushing an unsafe rate.
Explore the whole Calcs family here.
Not happy with our calculations or how it works? Let us know.
Have a suggestion for a calculator you don't see here? Let us know.
All AthleteCalcs tools
Strength
One-Rep Max Calculator Bench Press Calculator Squat Max Calculator Deadlift Max Calculator Overhead Press Max Calculator RPE Calculator Plate Calculator Weekly Training Volume Calculator Wilks / DOTS Calculator Strength Standards Calculator 1RM Percentage Chart kg to lbs ConverterRunning
Pace Calculator 5K Pace Calculator 10K Pace Calculator Half Marathon Pace Calculator Marathon Pace Calculator Race Time Predictor Treadmill Pace ConverterCardio & Endurance
Heart Rate Zone Calculator Zone 2 Heart Rate Calculator Max Heart Rate Calculator Target Heart Rate Calculator Calories Burned Calculator Walking Calories Calculator VO2 Max Calculator Steps to Miles Calculator Miles to Steps Calculator Cycling FTP Calculator Swim Pace Calculator Rowing Split Calculator Vertical Jump Calculator Sweat Rate Calculator Steps to Calories CalculatorMilitary Fitness Tests
Army Fitness Test (AFT) Calculator AFT Event Score Lookup Army Body Fat Calculator Army Height and Weight Standards Air Force PT Test Calculator Marine Corps PFT Calculator Marine Corps CFT Calculator Navy PRT Calculator Military Fitness Test ComparisonBody & Nutrition
BMI Calculator TDEE Calculator Calorie Calculator Calorie Deficit Calculator Calorie Surplus Calculator BMR Calculator Macro Calculator Protein Calculator Weight Loss Calculator Body Fat Calculator Lean Body Mass Calculator Ideal Body Weight Calculator Water Intake Calculator FFMI Calculator Waist-to-Hip Ratio Calculator Waist-to-Height Ratio Calculator Bulking Calculator Cutting Calculator Keto Calculator Carb Calculator Carb Loading Calculator Weight Cut Calculator (Combat Sports) Height Converter (cm to ft/in) Body Shape CalculatorNo calculators match your search.