Free online tools
Calculators, converters & text tools.
Find the tool for the task. Calculate and convert instantly, right in your browser.
Math
5Basic Calculator
One expression. Instant answer.
Percentage & Percentage Change Calculator
Find a percentage, ratio, or change.
Random Number Generator
Pick an integer within your range.
Ratio Calculator
Simplify a ratio and scale it.
Average Calculator
Mean, sum, range and count.
Text
3Word & Character Counter
Count letters, emoji, and bytes.
Case Converter
Change text capitalization.
Remove Duplicate Lines
Keep the first copy of each line.
Everyday
11Discount Calculator
Know the price before you pay.
Date Difference Calculator
How many days between two dates?
Unit Converter
Length, mass, and temperature.
Tip & Bill Split Calculator
Add a tip and split the bill.
Age Calculator
Age on any calendar date.
Centimeters to Inches
One value. An instant conversion.
Inches to Centimeters
One value. An instant conversion.
Kilograms to Pounds
One value. An instant conversion.
Pounds to Kilograms
One value. An instant conversion.
Fahrenheit to Celsius
One value. An instant conversion.
Celsius to Fahrenheit
One value. An instant conversion.
JSON Formatter & Validator
Readable JSON, with error checks.
URL Encoder & Decoder
Make text safe for a URL.
Base64 Encoder & Decoder
Encode and restore UTF-8 text.
Password Generator
Create a password on your device.
Number Base Converter
Convert integers without precision loss.
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