Calculators Tools
Fast, accurate calculators for daily life and work.
Popular
BMI Calculator
Calculate Body Mass Index and category.
Tip Calculator
Split the bill and calculate the tip per person.
Average Calculator
Find mean, median, mode and sum of numbers.
Date Difference
Calculate the number of days between two dates.
Scientific Calculator
A full scientific calculator in your browser.
Are these Calculators tools free?
Yes — every Calculators tool on OmniTools is 100% free with no watermarks, no limits and no account required.
Do I need to sign up or install anything?
No. All 5 Calculators tools run in your browser — nothing to download, install or register for.
Are my files and data private?
Most tools process your data entirely on-device in your browser, so nothing is uploaded. Where a file must be processed on the server, it is sent over HTTPS and deleted right after.