15 free calculators — no sign-up required, instant results
Age Calculator
Calculate exact age in years, months, and days.
Use Calculator →Concrete Calculator
Cubic yards of concrete for slabs, footings, and columns.
Use Calculator →Days Between Dates
Count exact days, weeks, and months between any two dates.
Use Calculator →Discount Calculator
Sale price, savings amount, and discount percentage.
Use Calculator →GPA Calculator
Weighted and unweighted GPA with grade conversion table.
Use Calculator →Grade Calculator
Final grade needed, weighted grades, and exam score required.
Use Calculator →Hourly to Annual Salary
Convert hourly wage to annual, monthly, and weekly salary.
Use Calculator →Mulch Calculator
Cubic yards of mulch needed by area and depth.
Use Calculator →Pay Raise Calculator
New salary after raise, or what percentage increase you got.
Use Calculator →Percentage Calculator
Find percentage of a number, increase/decrease, and more.
Use Calculator →Sales Tax Calculator
Add or remove sales tax for all 50 US states instantly.
Use Calculator →Square Footage Calculator
Calculate square footage for flooring, painting, or tiling.
Use Calculator →Time Card Calculator
Calculate hours worked for payroll with lunch deductions.
Use Calculator →Tip Calculator
Split bills and calculate tips for any group size.
Use Calculator →Unit Converter
Convert length, weight, temperature, volume, and more.
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