Free Online Calculators
Powerful, accurate calculators for all your needs. From financial planning to health tracking and construction projects, get instant results with our free tools.
Everyday Math
Quick and easy calculators for daily calculations
Financial Calculators
Make informed financial decisions with our accurate calculators
Health Calculators
Track your health metrics and achieve your fitness goals
BMI Calculator
Calculate your Body Mass Index and health status
BMR Calculator
Calculate your Basal Metabolic Rate
Body Fat Calculator
Estimate your body fat percentage
Pregnancy Calculator
Calculate due date, conception date, and pregnancy week
Height Predictor
Predict child's adult height from parents' heights and current data
Construction Calculators
Essential calculators for construction and home improvement projects
Concrete Calculator
Calculate cubic yards and bags needed for slabs, footings, and more
Flooring Calculator
Calculate square footage, tiles, and materials for any flooring type
Paint Calculator
Calculate gallons needed for walls and ceilings with primer estimates
Roofing Calculator
Calculate roofing squares, bundles, and materials based on pitch and type
Stair Calculator
Calculate rise, run, stringers and check building code compliance
Why Choose AllCalcs?
Fast & Accurate
Get instant, precise calculations with our optimized algorithms
100% Free
All our calculators are completely free with no hidden fees
Mobile Friendly
Works perfectly on all devices - desktop, tablet, and mobile