AJ Design Software provides programs, freeware applications, tools, solutions and online calculators for engineering, design, science and education problems.
|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,
gauges and sensors, 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
||Solve problems related to adjusted basis,
original basis or purchase price, capital additions,
sales cost, cumulative real estate depreciation and
cumulative capital improvements depreciation.
|Activated Sludge Calculator
||Solve problems related to wastewater, sludge volume index, settling volume and suspended solids concentration.
|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.
|Atmospheric Dispersion Model Calculator
||Solve problems related to atmosphere dispersion modeling, plume contaminant concentration at a point in space, ground level concentration, centerline concentration, emission
source, effective and physical stack height, plume rise, gas exit speed and heat emission rate, stability parameter conditions, weather station wind speed and elevation, superadiabatic,
neutral condition, subadiabatic, downwind direction, standard deviation, measured and average wind speed, gaseous diffusion, and Gaussian model.
Infant Growth Charts Percentile Calculator
||Solve problems related to infant, baby,
growth charts, plots and graphs, weight, age, sample
and birth date.
||Solve problems related to bank discount,
note maturity value, annual bank discount rate, time
in years and band proceeds.
|Battery Life Calculator
||Solve problems related to how long a battery will last, discharge time, current, draw rate, electronics, rechargeable and Peukert number.
|Bernoulli Theorem Calculator
||Online script for solving any variable in the Bernoulli
Theorem equation. Solve for head loss, static head,
elevation, pressure energy, velocity energy, density
and acceleration of gravity. Assists in the computations
for leak discharge, pipe networks, tanks, sensors, sluice
gates, weirs, pilot tubes, nozzles and open channel
flow. The flow is assumed to be streamline, steady state,
inviscid and incompressible.
|Biochemical Oxygen Demand Calculator
||Solve problems related to BOD, ultimate, seeded and unseeded BOD, deoxygenation rate constant and time.
|Boyle's Law Calculator
||Solve problems related to Boyle's gas law, pressure, thermodynamics, constants and volume.
|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.
Even Ratio Calculator
||Solve problems related to break even ratio,
debt service, operating expenses and gross operating
|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.
Depth of Field Calculator
||Solve problems related to film and digital
single lens reflex DSLR cameras, DOF, f-stop, photographs,
pictures, bokeh, blur, near and far limiting distance,
aperture, art, zoom and prime lenses, sharpness, image
sensor size, circle of confusion, lens focal length,
subject or focus distance and hyperfocal distance.
Hand Held Shutter Speed Calculator
||Determine the slowest hand held or holdable
shutter speed using lens focal length and camera crop
factor. The site is related to image stabilization,
vibration reduction, stops, camera shake, blurred images
|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.
||Solves financial problems related to capitalization
rate, gross operating income, value, land, building,
cost and residential, industrial and commercial investment
on Cash Rate Calculator
||Solves financial problems related to cash
on cash rate, annual cash flow, equity dividend rate
and cash invested.
|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.
Growth Charts Percentile Calculator
||Solve problems related to child, toddler
and teen growth charts, percentile plots and graphs,
weight, age, sample and birth date.
|Circle Equation Calculator
||Solve problems related to circles, math, geometry, diameter, radius, circumference, area, arc, central angle, segment, chord length midpoint and sector.
|Circular Motion Calculator
||Solve problems related to centripetal acceleration, velocity, radius, period, orbits and satellites.
|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.
||Solve problems related to color conversion,
red, green, blue, RBG, web colors, graphics design,
image processing and color picker.
||Financial calculator for comparing or
analyzing two loans or mortgages. The calculator is
for fixed rate loans based on Annual Percentage Rate
(APR). Analysis includes monthly and total payment,
interest and principal paid, balance versus time and
amortization table calculations. The tool give visual
representation of the data using charts, graphs, plots
|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
|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.
||Solve for flow rate, area and velocity in the continuity equation.
||Solve problems involving cyclone inlet and radial velocity, particle density, air or gas density, radial distance, rotational velocity, particle diameter, pressure drop, gas
flow rate, absolute pressure, temperature, proportionality factor, settling velocity, separation factor, approximate effective turns, inlet height and width, cylinder length, cone
length, cut diameter and air gas viscosity.
|Darcy Weisbach Calculator
||Online solver for any variable in the Darcy-Weisbach equation. Solve for head loss, friction factor, pipe diameter, pipe length, flow velocity and acceleration of gravity
|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.
Coverage Ratio Calculator
||Solve for problems related to debt coverage ratio,
annual net operating income and annual debt service.
|Density Equations Calculator
||Solve for any variable in density equation. Variables include density, mass and volume.
||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, ultrasound, siren, horn, 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
|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.
|Electrodialysis Membrane Design Calculator
||Solve problems related to electrodialysis membranes, filtration, purification, current, Faraday's constant, flow rate, solution normality, number of cells, power, voltage, resistance,
removal efficiency and current efficiency.
|Electrostatic Precipitator Design Calculator
||Solve problems related to electrostatic precipitators, collection efficiency, electrodes collecting surface area, gas flow rate and particle drift velocity.
|Engine Displacement Calculator
||Solve problems related to engine displacement, piston surface area and diameter, single cylinder volume and engine stroke.
|Engine Equations Calculator
||Solve problems related to volumetric efficiency , cubic in displacement , air flow rate, compression ratio, piston decks, stroke length, cylinders, head gasket thickness and
volume, compression ratio, fuel system injector size and combustion chamber volume.
|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.
||Solve problems associated with flocculators, velocity gradient, input and dissipated power, drag coefficient, paddle area, water density, relative paddle velocity, dynamic viscosity
and tank volume.
|Fluid Pressure Calculator
||Solve for different variables related to force, area, bulk modulus, compressibility, change in volume, fluid column top and bottom pressure, density, acceleration of gravity,
depth, height, absolute, atmospheric and gauge pressure.
|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.
||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,
careers, work, papers, helper worksheets, tests, exams,
quizzes, projects, essays, how to guides and homework.