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Base 64 encoding and decoding
The calculators encode string to base64 string and decode back to original string. Special characters (+/) , generally produced by base64 algorithm, can be replaced by the data provided in additional parameter.
Area Converter
This online calculator is designed to convert between different units of area.
The Rectangle Area Calculator with Perimeter Condition
The Rectangle Area Calculator with Perimeter Condition is a helpful tool designed for solving math problems that involve calculating the area of a rectangle under specific perimeter conditions.
MPG to L/100 km Conversion Calculator
This online calculator converts miles per gallon to liters per 100 kilometers
Hack
Hack the three-digit code
The waves and the wind. Calculation of wave characteristics
Calculation of wave characteristics
The waves and the wind. Wave height statistical forecasting
Predicting the height of the waves depending on the wind strength
Participant Placement Calculator
The Participant Placement Calculator generates a list of routes for participants given the number of starting positions and participants.
Gamma function
Calculation of the Gamma function using Lanczos approximation
Volume of body given the buoyant force
This calculator computes the volume of body given the buoyant force and density of the body, assuming that the buoyant force equals gravity force.
Square Door Tank Volume
Use this calculator to determine tank volume if you've modified the tank for square doors.
Circular Intake/Exhaust Calculator
Used to calculate opening area when a circular cover is pivoted over a circular opening.
Cylindrical Tank Volume Calculator
Use this calculator to determine your cylindrical tank volume in cubic inches and gallons even if one or both ends are rounded. Especially useful if you've cut the tank in length. If you've got a flat end just leave it blank or enter 0.
Throat Calculator for Overlapping Cylindrical Tanks
Use this calculator to determine the throat cut-out when using two cylindrical tanks of the same or different diameter. The cut-out width will always be the same for both tanks. Enter the tank's diameter and the throat area from the Pit Calculator.
Throat Calculator for Cylindrical Tanks
Use this calculator to lay out the throat opening on a cylindrical tank, using the throat area from the Pit Calc.
Oval Tank Volume Calculator
Find the volume of oval tanks in cubic inches and gallons.
Butterfly Damper Calculator
Use this calculator to determine opening area of the damper.
Trapezoid - Shaped Throat Opening
Use this calculator to lay out a trapezoidal shaped throat cut-out. Enter the throat area from the PitCalc, your tank's diameter and dam height.
Atbash cipher
This calculator allows you to encrypt and decrypt text with Atbash method
Evaluating expressions
This online calculator substitutes a specific value for each variable, and performs the operations, evaluating the given expression.
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