Not your average calculator site. While Calculate This! does provide standard calculators, there are even more calculators that you probably didn't know you even needed.

Calculate The Area Of A Parallelogram

To calculate the area of a Parallelogram, use the following formula:

multiply the width with the height (width * height)

Calculate The Area Of A Triangle

To calculate the area of a triangle:

multiply the base with the height (base * height)
divide the result in half ((base * height) / 2)

Calculate The Area Of A Trapezium

To calculate the area of a trapezium, which is essentially a rectangle with triangles on either side:

add together the top and bottom (top + bottom)
multiply the result with the height ((top + bottom) *... more

Calculate The Discount Percentage Between Two Numbers

Want to know what percentage you are saving or how much a price has actually been reduced? This calculator will take the new price and determine the percentage discount based on the old price or value. It's a handy... more

How Much Pasta To Cook Per Person Calculator

This calculator will calculate the amount of dry pasta you will need per person/serving. The calculations are based on Barilla's recommendations, which are roughly 2 ounces of dry pasta per person. Two ounces of dry... more

This calculator will convert your annual income into your hourly salary. Just enter your yearly salary and the number of hours you work per week and the calculator will let you know how much you are actually earning on... more

This calculator will convert your hourly pay into your annual or yearly salary. Just enter your hourly pay rate and the number of hours you work per week and the calculator will let you know how much you would be earning... more

Grams To Ounces

Convert Ounces (oz) to grams (gm) using this conversion calculator for metric weight conversions. 1 Ounce equals 28.3495 Grams. The formula to convert ounces to grams is to multiply ounces by 28.3495.

Convert Hours And Minutes To Decimal Time

This handy time conversion calculator will convert hours and minutes into a decimal time.

Convert Decimal Time To Hours And Minutes

This handy time conversion calculator will convert a decimal time into hours and minutes.

We would prefer to call this calculator the "Why We Love Indoor Cats Calculator" because we love cats, but we also love wildlife. This calculator estimates the number of wildlife kills that occur both weekly and annually... more

Weight of bones

This little calculator will help you determine how much the bones in your body weigh based on a percentage of your weight in pounds.

Blood Volume

This little calculator will help you determine how much blood is in your body based on your weight in pounds.

We would prefer to call this calculator the "Why We Love Indoor Cats Calculator" because we love cats, but we also love wildlife. This calculator estimates the number of wildlife kills that occur both weekly and annually... more

This widget will display the current estimated World Population from the US Census.

This widget will display the current estimated US Population from the US Census.

This calculator takes the most current (hourly) US population estimate from the US Census and calculates the current number of households that are pet owners based on statistical pet ownership data. It provides a further... more

No matter how you do the math, there are too many cats/kittens and too few homes. This calculator attempts to (loosely) apply math calculations to scientific principles as they relate to cat reproduction. Taken into... more

Pounds To Ounces

Convert Pounds (lb) to Ounces (oz) using this conversion calculator for metric weight conversions. 1 Pound = 16 Ounces. The formula to convert pounds to ounces is to multiply by 16.

Pounds To Kilograms

Convert Pounds (lb) to Kilograms (kg) using this conversion calculator for metric weight conversions. 1 Pound equals 0.453592 Kilograms. The formula to convert pounds to kilograms is to multiply pounds by 0.453592.

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