Calculate the surface area of a sphere

Calculate the volume of all common geometrical shapes, such as cubes, spheres, pyramids, cones etc.

Calculate the area of all common geometrical shapes, such as circles, triangles etc.

Calculate the volume of a sphere (such as the earth, a marble) using many different dimensions for both input and output.

Calculate the volume of a cube or brick (such as a dice or an iPhone) using plenty of different input measurements and get the volume in any dimension you want.

Calculate the volume of a pyramid with a four-sided bases (such as, well, the pyramids!) using several different dimensions for both input and output.

Calculate the volume of a cone (such as an ice cream cone), it allows multiple different types of inputs and outputs - depending on your need.

Calculate the volume of a cylinder (such as a beer can or a hose) using many different dimensions for both input and output.

The surface area is the surface part of a three-dimensional object. You can use these calculations to determine that here.

Use this calculation to calculate the area of a square or a rectangle.

This calculation will calculate the area of a circle using either the diameter, the radius or the circumference as input.

Calculate the area of a (right-angled) triangle with this calculation.

How much space do we have to live on, on planet Earth? Calculate this and many other things in this calculation for surface area for spheres.

With this calculation you can calculate the surface area of a cone.

Use this calculation to calculate the surface area of cubes and bricks.

Ever wondered how much you would have to paint if you were to repaint the pyramids? No? Well, you can calculate surface areas of pyramids (with four-sided bases) here if you ever find the need.

If you would unfold a cylinder it would become a rectangle. Calculate the surface area of a cylinder (i.e. that rectangle) here.

This calculation will calculated how much time you save (or lose) per hour, by increasing or decreasing the speed of your vehicle.

So, you have paid all your bills and perhaps spent a bit more. Now, calculate how much you have left to spend per day considering how much money you have left from your pay check.

A commonly used conversion is the conversion between miles per gallon and liters per kilometer (the most common conversions for fuel consumption). These are covered in the Converter but since it is so popular it is converted separately here as well.

Even though these conversions are covered in the Converter on this website, they are so common that they have their own converter. You can convert between miles per hour, meters per second and kilomoters per hour.

Calculate how many days there are left until a certain date, or how many days ago there was since a certain date.