Engineering Calculators

Ac Tonnage Calculator

Calculate the AC tonnage you need for any room or building. Enter square footage, climate, and insulation to get the right cooling capacity.

Aluminum Weight Calculator

Calculate the weight of aluminum stock in seconds. Enter dimensions and alloy, get pounds and kilograms instantly for any shape.

Beam Deflection Calculator

Calculate beam deflection for simply supported beams under point loads. Enter beam length, load force, material properties, and get precise deflection results.

Beam Deflection Calculator

Calculate maximum beam deflection instantly. Supports simply supported and cantilever beams with point or distributed loads using standard structural formulas.

Beam Load Calculator

Calculate beam load capacity and deflection for structural beams. Enter beam dimensions, material properties, and loading conditions to determine safe load l...

Bearing Load Calculator

Calculate bearing static and dynamic loads for shaft design. Enter forces, angles, and safety factors to determine if your bearing can handle the load.

Bolt Torque Calculator

Calculate bolt torque values using diameter, thread pitch, yield strength, and safety factor. Get precise torque specifications for secure fastening.

Calculate My Roof Size

Calculate your roof size from footprint and pitch. Get total square footage, roofing squares, and material estimates in under a minute.

Carat Weight Calculator

Calculate the carat weight of a gemstone from its dimensions and shape. Get an instant estimate before buying, selling, or appraising.

Chip Load Calculator

Calculate chip load per tooth for CNC milling and routing. Enter feed rate, spindle RPM, and flute count to get the exact chip thickness.

Circuit Impedance Calculator

Calculate circuit impedance for AC circuits with resistance, inductance, and capacitance. Enter component values and frequency to find total impedance.

Commercial Load Calculation Sheet

Calculate total electrical load for commercial buildings. Enter floor area, lighting, equipment, and HVAC to get demand load in kW and amps.

Compressor Efficiency Calculator

Calculate compressor efficiency using inlet/outlet pressures and temperatures. Enter gas properties to see isentropic and polytropic efficiency values.

Concrete Block Calculator

Calculate how many concrete blocks you need for any wall. Enter dimensions and get an exact block count with mortar joints accounted for.

Concrete Estimate

Calculate how many cubic yards of concrete you need for a slab, footing, or column. Enter dimensions and get a ready-mix order quantity instantly.

Concrete Estimator Calculator

Calculate how many cubic yards or cubic meters of concrete you need for slabs, footings, and columns. Fast, accurate, free.

Concrete Weight Calculator

Calculate the weight of a concrete slab, wall, or column in seconds. Enter dimensions and mix type to get total weight in pounds or kilograms.

Concrete Yard

Calculate how many cubic yards of concrete you need for a slab, footing, or pour. Enter dimensions and get an instant quantity with waste allowance.

Conduit Fill Calculator

Calculate how many wires fit safely in electrical conduit. Enter wire gauge and conduit size to get maximum wire capacity per NEC code requirements.

Diamond Weight Calculator

Estimate a diamond's carat weight from its measurements. Works for round, princess, oval, pear, marquise, and emerald cuts.

Dimensional Weight Calculator

Calculate dimensional weight for shipments and compare it to actual weight to find your billable weight and estimated shipping cost.

Electrical Load Calculator

Calculate electrical load, current, power consumption, and circuit requirements. Free electrical load calculator for safe wiring design.

Electrical Power Calculator

Calculate electrical power using voltage, current, or resistance. Enter any two values to find power in watts, plus current and voltage calculations.

Electrical Power Calculator

Calculate electrical power in DC and AC circuits. Supports single-phase and three-phase AC with power factor.

Electricity Load Calculator In Kw For Home

Calculate your home's total electrical load in kW. Enter appliances, wattages, and usage hours to size your breaker panel or generator.

Eor Calculator

Calculate oil recovery efficiency with primary, secondary, and enhanced oil recovery (EOR) methods. Enter field data to determine total oil recovery percentage.

Estimate Concrete

Calculate how many cubic yards or cubic meters of concrete you need for a slab, footing, or column. Includes waste factor.

Fan Affinity Law Calculator

Calculate fan performance changes when speed or diameter changes. Enter current fan specs and new parameters to find new flow rate, pressure, and power requi...

Fluid Pressure Calculator

Calculate fluid pressure at any depth using density and height. Enter fluid type and depth to get pressure in pascals, psi, or bar instantly.

Free Roof Calculator

Calculate roof area, shingle quantities, and material costs instantly. Enter your roof dimensions and pitch to get an accurate estimate.

Gear Ratio Calculator

Calculate gear ratios for mechanical advantage, speed reduction, or torque multiplication. Enter gear teeth or diameters to find the exact ratio for your pro...

Gear Ratio Calculator

Calculate gear ratios instantly. Enter driver and driven gear teeth counts to find speed reduction, mechanical advantage, and output speed.

Glass Weight Calculator

Calculate the weight of any glass panel by entering dimensions and glass type. Instant result for planning, installation, and structural load decisions.

Heat Transfer Calculator

Calculate heat transfer rate through conduction, convection, and radiation. Enter surface area, temperature difference, and material properties to find therm...

Load Calcs

Calculate total structural load on a beam or floor system. Enter dead load, live load, and tributary area to get factored design load instantly.

Load Factor Calculator

Calculate electrical load factor from peak demand and average load. Optimize energy efficiency and reduce utility costs with accurate load factor analysis.

Log Weight Calculator

Calculate the weight of a log by species, dimensions, and moisture content. Get an accurate estimate in seconds for hauling, structural, or milling decisions.

Lumber Weight Calculator

Calculate the weight of lumber by species, dimensions, and moisture content. Get accurate load estimates for structural planning and transport.

Measure My Roof Online

Calculate your roof area, pitch, and material quantities from ground-level measurements. Get shingle counts and waste factor in under a minute.

Metal Roof Calculator

Calculate metal roofing material, cost, and panel count for your project. Enter roof dimensions and get an instant estimate in under a minute.

Metal Roof Estimate Calculator

Estimate metal roofing cost by square footage, pitch, panel type, and waste factor. Get a realistic budget before calling contractors.

Metal Weight Calculator

Calculate the weight of metal pieces by shape, material, and dimensions. Get instant results for bars, plates, tubes, and more in seconds.

Moment Of Inertia Calculator

Calculate moment of inertia for common shapes like rods, discs, spheres, and rectangles. Enter dimensions and mass to get rotational inertia values.

Money Weight Calculator

Calculate the exact weight of any amount of US currency in coins or bills. Find out how much cash physically weighs before transport or storage.

Motor Efficiency Calculator

Calculate motor efficiency by entering input and output power. See efficiency percentage and power losses for electric motors, pumps, and generators.

Ohm's Law Calculator

Calculate voltage, current, resistance, and power using Ohm's Law. Enter any two values to find the missing electrical quantities instantly.

Ohm's Law Calculator

Calculate voltage, current, resistance, or power using Ohm's Law. Enter any two values to find the missing electrical parameters instantly.

Ohm's Law Power Calculator

Calculate electrical power, voltage, current, and resistance using Ohm's Law. Enter any two values to find the other two. Essential for electrical engineerin...

Online Concrete Calculator

Calculate how many cubic yards or bags of concrete you need for any slab, footing, or column. Enter dimensions and get an instant quantity.

Paper Weight Calculator

Calculate paper weight in grams per sheet, pounds per ream, or GSM from sheet size and basis weight. Fast results for print and packaging decisions.

Pipe Flow Calculator

Calculate pipe flow rate, velocity, and pressure drop. Enter pipe diameter, length, and fluid properties to determine flow characteristics for engineering ap...

Plate Weight Calculator

Calculate the weight of a metal or material plate by entering dimensions and material. Instant result for steel, aluminum, and more.

Pressure Converter

Convert pressure between PSI, bar, kPa, mmHg, atm, and more. Enter any pressure value and instantly see equivalent measurements in all major units.

Pressure Drop Calculator

Calculate pressure drop in pipes using flow rate, diameter, length, and fluid properties. Get results in PSI, bar, or kPa for water, oil, and gas systems.

Pump Power Calculator

Calculate pump power requirements from flow rate, head pressure, and efficiency. Determine hydraulic, shaft, and electrical power for centrifugal pumps.

Roof Area Calculator

Calculate your roof area and material quantities fast. Enter your footprint and pitch to get total square footage, shingles needed, and waste factor.

Roof Area Estimator

Calculate your roof's actual surface area from footprint dimensions and pitch. Get shingle quantities and material estimates in under a minute.

Roof Calculator App

Calculate roof area, material quantities, and estimated costs for any roof pitch. Get shingle counts, underlayment, and waste factor in under a minute.

Roof Dimension Calculator

Calculate roof area, rafter length, and material quantities from footprint and pitch. Get accurate numbers before ordering shingles or scheduling a contractor.

Roof Estimator Calculator

Estimate roofing material quantities and project cost by entering your roof dimensions, pitch, and material type. Get square footage and shingle counts fast.

Roof M2 Calculator

Calculate roof area in square metres from footprint and pitch. Get material quantities instantly for tiles, felt, and insulation.

Roof Measurement Calculator

Calculate roof area, pitch angle, and material quantities for any roof shape. Get accurate measurements before ordering shingles or roofing materials.

Roof Size Estimator

Estimate your roof area from floor plan dimensions and pitch. Get material quantities for shingles, underlayment, and more in under a minute.

Roof Square Foot Estimator

Calculate your roof's actual square footage from footprint dimensions and pitch. Get material quantities and roofing squares instantly.

Roofing Calculator App Free

Calculate roofing materials, shingles, and cost estimates for any roof size. Get squares, bundles, and waste factor in under a minute.

Safety Factor Calculator

Calculate safety factors for engineering designs. Enter material strength and applied stress to determine if your design meets safety requirements.

Size to Weight Rectangular Cuboid Calculator

Calculate the weight of a rectangular cuboid from its dimensions and material density. Instant results for metals, wood, plastics, and custom materials.

Spring Constant Calculator

Calculate spring constant (k) from force and displacement using Hooke's Law. Enter force in newtons and displacement in meters to find spring stiffness.

Steel Calculation

Calculate the weight, volume, and cost of steel sections by shape, dimensions, and material grade. Fast results for engineers and fabricators.

Steel Plate Weight Calculator

Calculate the weight of a steel plate instantly. Enter dimensions and grade to get exact weight in pounds or kilograms for procurement and load planning.

Steel Weight Calculator

Calculate the weight of steel by shape, dimensions, and length. Get results in pounds and kilograms instantly for any structural section.

Stress Strain Calculator

Calculate stress, strain, and Young's modulus for materials under load. Enter force, area, length change, and original length for engineering analysis.

Structural Load Calculator

Calculate structural loads on beams and columns. Enter load type, weight, and dimensions to determine total load, distributed load per unit length, and safet...

Thermal Expansion Calculator

Calculate thermal expansion of materials with temperature changes. Enter initial length, temperature difference, and material type. Get precise expansion mea...

Tonnage Calculator

Calculate press tonnage required for metal stamping and forming operations. Enter material, thickness, and perimeter to get the force needed.

Torque Calculator

Calculate torque from force and distance. Enter applied force, lever arm length, and angle to get torque in Newton-meters or foot-pounds.

Transformer Ratio Calculator

Calculate transformer turns ratio and voltage/current relationships. Enter primary and secondary values to determine step-up or step-down ratios.

Voltage Divider Calculator

Calculate voltage drop across resistors in a voltage divider circuit. Enter input voltage and resistor values to find output voltage and current flow.

Weighted Blanket Calculator

Find the right weighted blanket weight for your body weight, age, and sleep preferences. Get a personalized recommendation in seconds.

Wire Gauge Calculator

Calculate wire diameter, cross-sectional area, and resistance for AWG and metric wire gauges. Enter gauge number to see diameter in mm and inches plus electr...

Wire Resistance Calculator

Calculate electrical wire resistance instantly. Enter wire material, length, and diameter. See resistance in ohms for any conductor configuration.