Free online tools

Calculators, converters and file tools that work in your browser. No sign-up. What you type and the files you pick stay on your device.

Calculators

Percentage Calculator Work out a percent of a number, what percent one number is of another, or the total from a part. Answers update as you type.
Percentage Increase Calculator Add or take off a percentage from any number, such as a salary raise, a price increase or a markdown, and see the new amount.
Percentage Change Calculator Find the percent increase or decrease between an old number and a new one, for prices, sales, grades, weight or anything else.
Discount Calculator See the sale price and how much you save from any percent off, including a second "extra % off" stacked on top.
Age Calculator Find your exact age in years, months and days from your date of birth, plus your age in total months and days and how long until your next birthday.
Date Calculator Count the days, weeks and weekdays between two dates, or add and take away days from a date to find a deadline.
Hours Calculator Work out the hours between two times, minus breaks, in hours and minutes and as a decimal for timesheets. Handles shifts that go past midnight.
Loan Calculator Find the monthly payment on a loan, plus the total you pay back and the total interest, from the amount, the yearly rate and the term.
Compound Interest Calculator See how savings grow with compound interest and monthly deposits, and how much of the final balance is interest you earned.
BMI Calculator Work out your body mass index from your weight and height in metric or imperial units, with the WHO category and the healthy weight range for your height.
GPA and GWA Calculator Work out your GPA or general weighted average (GWA) from each subject's units and grade. Works with the Philippine 1.0 to 5.0 scale, the 4.0 scale and percentages.
Grade Calculator Turn a test score into a percentage grade, and find the score you need on the final exam to reach the grade you want.
Salary to Hourly Calculator Turn a monthly or yearly salary into an hourly, daily and weekly rate, or the other way round, for your own working hours and days.

Converters

Text

Generators

PDF

Image

Compress Image Make JPG, PNG and WebP photos smaller for email, forms and websites. Choose the quality and size, and compress many at once, without uploading them.