All online calculators

How many days are there between two dates?

This is simple day calculator which determines number of days between two dates.


Days between two dates

  • Hill cipher

    This calculator uses Hill cipher to encrypt/decrypt a block of text

  • Hip roof calculator

    This calculator will help you estimate hip roof parameters, including rafters and roof area

  • Histogram

    Histogram generation according to input data. The number of groups is determined by the Sturgess formula, other formulas or set manually

  • Histogram group number

    Sturges formula and other methods of determining the number of groups in histogram generation

  • How many circles of radius r fit in bigger circle of radius R

    This calculator estimates how many circles of radius r can be placed inside another circle of radius R.

Imperial to Metric and Metric to Imperial measures of length converter


Metric to Imperial measures of length