AJ Design Software provides programs, freeware applications, tools, solutions and online calculators for engineering, design, science and education problems.

Miscellaneous
AC Circuit Design Calculator	Solve problems related to alternating current electricity, inductive reactance, capacitive inductance, capacitance, frequency and inductance.
Acoustic Flow Meter Design Calculator	Solve problems related to flow meters, average axial velocity of water flow, acoustic signal upstream and downstream travel time, acoustic path length between transducer faces and angle between acoustic path and the pipe's longitudinal axis.
Airplane Weight Shift Calculator	Solve problems related to weight shifts, weight moved, airplane weight, length center of gravity moves and length between arms.
Aluminum Pipe Design Calculator	Solve problems related to aluminum pipes, pressure rating, allowable stress, yield strength, wall thickness and outside pipe diameter.
Buried Corrugated Pipe Design Calculator	Solve problems related to underground aluminum and steel corrugated pipe, pipe design pressure, soil weight pressure, wheel load pressure, internal vacuum pressure, thrust in pipe and ring compression thrust.
Buried Plastic Pipe Design Calculator	Solve problems related to pipe pressure, wall crushing, soil weight pressure, thrust in pipe, outside diameter, wheel load pressure, ring compression thrust, required wall cross sectional area, allowable long term compressive stress and internal vacuum pressure.
Buried Spiral Rib Pipe Design Calculator	Solve problems related to underground aluminum and steel spiral ribbed pipe, metal pipe design pressure, soil weight pressure, wheel load pressure, internal vacuum pressure, thrust in pipe and ring compression thrust.
Capacitor Design Calculator	Solve problems related to capacitance, parallel plate capacitors, stored energy, cylindrical capacitors, permittivity, area, separation distance, conductors, length, diameter, electrical charge, potential difference, volt, energy storage, coulomb and farad.
Cat Age Calculator	Determine the age of your cat or kitten in equivalent human years. Determine your animal's age in human lifespan terms.
Cauchy Number Calculator	Solve problems related to Cauchy value, flow velocity, bulk modulus of elasticity and density.
Cavitation Number Calculator	Solve problems related to cavitation number, local pressure, fluid vapor pressure, fluid density and characteristic flow velocity.
Chezy Equation Calculator	Solve problems related to Chezy equation, flow velocity, Chezy coefficient, roughness coefficient, hydraulic radius and conduit slope.
Circle Equation Calculator	Solve problems related to circles, math, geometry, diameter, radius, circumference, area, arc, central angle, segment, chord length midpoint and sector.
Cloud Base Calculator	Solve problems related to cloud bases, surface temperature and dewpoint.
Colebrook Equation Calculator	Solve problems related to Colebrook equation, turbulent flow, Darcy friction factor, absolute roughness and Reynolds number.
Compounding and Discount Factors Calculator	Solve problems related to economics, cash flow factors and symbols, discrete compounding, capital recovery, single payment compound amount, single payment present worth, uniform gradient future worth, uniform gradient present worth, inform gradient uniform series, inform series compound amount, uniform series present worth and uniform series sinking fund.
Computer Memory Size Conversion Calculator	Calculator for converting computer memory size. Devices which use memory are hard drives, RAM, flash and stick drives, CPU and processor cache, video cards and files.
Darcy's Law Equations Calculator	Solve problems related to flow rate, hydraulic conductivity, hydraulic gradient, solids volume, saturated soil phase diagram, flow cross sectional area, darcy velocity or flux, seepage velocity, voids effective cross sectional area, flow gross cross sectional area, pressure head, solids, porosity, void ratio and length of column.
Density Equations Calculator	Solve for any variable in density equation. Variables include density, mass and volume.
Depreciation Calculator	Solve problems related to depreciation basis, salvage value at end of depreciation period, number of years, asset purchase price, constant percentage method, depreciation fraction and straight line method.
Dog Age Calculator	Determine the age of your dog or puppy in equivalent human years. See if your pet is old or young in human terms.
Doppler Effect Equations Calculator	Solve problems related to doppler effects wavelength behind and in front of source, doppler radar, wave velocity, source velocity, source frequency, approaching and receding source and receiver.
Ductile Iron Pipe Design Calculator	Solve problems related to ductile iron pipes, net pipe wall thickness, internal pressure, outside pipe diameter, working pressure, maximum surge pressure and yield strength.
Dry Adiabatic Lapse Rate Calculator	Solve problems related to dry adiabatic lapse rates, temperature, altitude, elevation.
Dynamic Viscosity Unit Converter	Convert between various dynamic viscosity units.
Earned Value Management Calculator	Solve problems related to earned value management, project management, cost performance index, budgeted cost of work performed, actual cost of work performed, schedule performance index, cost variance, schedule variance, variance at completion, budget at completion, estimate at completion and budgeted cost of work scheduled.
Earthquake Seismometer Calculator	Solve problems in relation to Richter scale, earth quake magnitude, amplitude, distance correction factor, seismic moment, rock rigidity, fault area, slip distance and seismograph.
Eckert Number Calculator	Solve problems in related to Eckert number dimensionless value, specific heat, characteristic flow velocity, dissipation and change in temperature.
Einstein Equation Calculator	Solve problems in related to Einstein's equation, nuclear engineering, mass, speed of light in a vacuum, atomic theory and energy.
Electrostatic Precipitator Design Calculator	Solve problems related to electrostatic precipitators, collection efficiency, electrodes collecting surface area, gas flow rate and particle drift velocity.
Euler Number Calculator	Solve problems related to Euler number dimensionless value, fluid dynamics, pressure change, density and characteristic flow velocity.
Federal Income Tax Rate Calculator	Solve problems related to 2005, 2006 and 2007 income taxes, income range, tax brackets, schedules, single, married filing jointly and file separately, head of household, taxable income and actual tax rate.
Fluorescent Light Bulb versus Regular Incandescent Analysis Calculator	Solve problems related to compact fluorescent and incandescent light bulbs, electricity and replacement costs, pollution, greenhouse gasses, bulb life comparison and carbon dioxide.
Note:	This online software site provides a resource for solving math, algebra, chemistry, geometry, trigonometry, physics and science problems. Covers problems and solutions at the grade school, middle school, high school, university and college course levels. Students, teachers, instructors, professors, educators, and tutors feel free to use charts, images, diagrams, formulas, answers, pictures, graphs, plots, code, figures and equations in your school lesson plans, assignments, tutorials, help or review sessions, examples, class room presentations, lectures, research trials, lab experiments, instruction manuals, jobs, papers, helper worksheets, tests, exams, quizzes, projects, essays, how to guides and homework.
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