Utility
Utility Calculators
Solve everyday math and scheduling problems with free utility calculators. Work out percentages, calculate days between dates and durations, and find future or past dates — fast and accurate.
Frequently Asked Questions
How do I calculate a percentage?
Use the percentage calculator to find X% of a number, what percent one number is of another, or the percentage change between two values.
How do I find a date a number of days from today?
Use the date calculator to add or subtract days, weeks, months, or years from a start date and see the resulting date.
What is the difference between calendar days and business days?
Calendar days include every day, while business days count only weekdays and exclude weekends (and sometimes holidays).
Are utility calculators free to use?
Yes. They are free and work on desktop, tablet, and mobile.