Useful calculators. Clear answers.
Practical calculators for everyday tasks, construction projects, work, measurements and digital media — with instant results, formulas and useful explanations.
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Fast calculators for some of the most common everyday and project calculations.
Percentage Calculator
Calculate percentages quickly with clear formulas and results.
Open calculator →EverydayAge Calculator
Calculate your exact age from your date of birth.
Open calculator →Time & WorkTime Card Calculator
Calculate weekly work hours from daily clock-in and clock-out times.
Open calculator →ConstructionFence Calculator
Estimate fence panels and posts from your project dimensions.
Open calculator →ConstructionGravel Calculator
Estimate cubic yards and approximate tons of gravel required.
Open calculator →ConstructionConcrete Slab Calculator
Estimate cubic yards of concrete required for a slab.
Open calculator →Find the calculation you need
CalculatorSquare is organized into focused categories so related tools are easy to discover.
Everyday
Percentages, age, dates, tips and other useful daily calculations.
Explore category →2 calculatorsTime & Work
Work hours, time cards, shifts and practical time calculations.
Explore category →8 calculatorsConstruction & DIY
Materials, quantities, roofing, gravel, concrete, paint and more.
Explore category →1 calculatorDigital
Image, video, screen and digital-dimension calculators.
Explore category →Calculations should be useful, fast and easy to understand.
We build practical tools that give you the answer quickly while also showing how the calculation works.
Core calculations run directly on your device for fast results.
Important calculator pages explain the method behind the result.
Real-world examples help make results easier to understand.
Open a calculator, enter your values and get your result.
Explore all 15 calculators.
Browse every calculator currently available on CalculatorSquare.