Calculators

Converts your ring size to different measurement systems, including US, UK, and diameter in millimeters.

Calculates the fuel needed for a trip and the estimated cost.

Converts a given number to its equivalent in millions.

Calculates the amount of concrete and cement needed for slabs and blocks, based on dimensions and mix ratios.

Calculates the weight of a steel plate based on its dimensions and the density of steel.

Calculates the dimensions of a spiral staircase, including the number of treads, tread width, and overall diameter.

Calculates the amount of sealant needed based on the length and width of the area to be sealed, and the sealant's bead size.

Calculates the mass percentage of a component in a mixture.

Calculates the molar mass of a gas using the ideal gas law (PV = nRT), where molar mass (M) = mass / moles. This calculator rearranges the ideal gas law to solve for molar mass: M = (mass * R * temperature) / (pressure * volume).

Displays the notes belonging to various musical scales (major, minor, modes, etc.).