Acoustical
You can use these calculators to calculate crossover design, decibels, super sonic flow, wavelength, speed of sound, and more..

Aquatic
You can use these calculators to calculate beach fill, seawater properties, sand transport, waves, and more..

Chemical
You can use these calculators to calculate molecular weight, molar mass, specific gravity, dilution, nuclear decay, and more..

Civil
You can use these calculators to calculate discharge of fluid section, peak runoff, average intensity, and more..

Computer
You can use these calculators to calculate DPI and PPI, domain, IP, hostname, etc. Also convert between data storage and transfer, resolution, and more..

Design
You can use these calculators to calculate band pass filter, crystal load sensitivity, network impedance, parallel capacitance, and more..

Electrical
You can use these calculators to calculate call minutes, blocking, traffic and number of lines, how many lines for a trunk group, area codes, and more..

Electronics
You can use these calculators to calculate attenuator loss and impedance, resistor divider network, bias voltage, battery life, and more..

Hydraulic
You can use these calculators to calculate flowrate, cylinder PUSH/PULL, speed, diameter, and more..

Materials
You can use these calculators to calculate sheet, plate, tube, bar, inertia, and more..

Mechanical
You can use these calculators to calculate cativation number, continuity, terminal fall, settling velocity, wind power, differential pressure, and more..

Process
You can use these calculators to calculate concentration, conversion factors, diffusivity, enthalpy, entropy, heat capacity, and more..

Structural
You can use these calculators to calculate column and beam strength, bending, buckling, curve fitting, and more..

Telecommunications
You can use these calculators to calculate call minutes, Carrier to noise, lines, transmission, and more..