Welcome to Online Calculator! We have a range of free, easy to use calculators, conversion tools, and much more!
Our tools are designed to help you perform a wide range of calculations and conversions quickly and accurately, whether you're at home, at work, or on the go.

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Home Page - Go Back to the Home Page... :-)
Full Screen Calculator - The Online Calculator that can be used free and full screen
Scientific Calculator - A great Scientific Calculator. Clear and Free!
Simple Calculator - A nice Simple Free Online Calculator. Easy to use and read.
Online Abacus - An Online Abacus! Teach numbers from 1 to 50 :-)
Darts Calculator - Forget the maths, and play Darts!
Maths Calculator - This Online Maths Calculator show the history of your sums. Very helpful!
BMI Calculator - Work out your BMI / Body Mass Index
Patio Calculator - How many slabs for that patio?
Ring Size Converter - What size ring do you need? Know the differences
Length Converter - Convert Lengths! CM, Feet, and more!
Percentage Calculator - Work out all the percentages you need!
Volume Converter - Find the Volume of a cube!
Weight Converter - Convert between weights
Length Conversions - A collection of Length conversion tools
Speed Conversions - A collection of Speed conversion tools
Temperature Conversions - A collection of Temperature conversion tools
Time Conversions - A collection of Time conversion tools
Weight Conversions - A collection of Weight conversion tools

Stopwatch - Online Stopwatch, FULL SCREEN Stopwatch. Great for meetings, classrooms, conferences, schools, anywhere really... :-)
Random Name Pickers - Random Name Picker Wheel and More Random Generators!
Distance Converter - Convert Distances! Miles, KM, and more!
Temperature Converter - Too Hot/ Too Cold? / Just Right!
Circle Tools - Circle Radius, Circle Diameter, or Circle Circumference

Featured Tools:

These are some of the most popular calculators and tools on the site!

Our Darts Calculator helps players calculate scores and checkouts quickly and accurately, making the game more enjoyable and competitive!

Our BMI Calculator quickly calculates Body Mass Index to help users understand their weight status and make informed health decisions.

Our Online Abacus is a virtual version of the traditional counting tool, designed to help children learn and practice basic math skills.

Our Scientific Calculator is a powerful tool that performs complex mathematical calculations and functions.

Our weight conversion tools are accurate, easy to use, and offer a wide range of units.

Get precise and hassle-free length conversions with our user-friendly and comprehensive length conversion calculators.

Our temperature conversion calculators are accurate, simple to use, and covers various temperature units.

Loads of other easy to use conversion tools!

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