Toolnoza

Engineering Tools

Explore electrical, hydraulic, ventilation, civil construction and mining tools by specialty.

Excavator Productivity CalculatorEstimate excavator cubic metres and tonnes per hour from bucket size, cycle time, fill factor and job efficiency.Haul Truck Fleet Sizing CalculatorEstimate the number of haul trucks needed to meet an hourly tonnage target using payload, cycle time and efficiency.Mulch CalculatorEstimate mulch volume in cubic yards, cubic feet or cubic meters from bed dimensions and depth, with waste and bag count.Paver CalculatorEstimate the number of pavers for a patio, walkway or driveway from project area, paver size and a waste allowance.Asphalt CalculatorEstimate hot-mix asphalt volume and weight in tons or tonnes from area, compacted thickness, density and waste allowance.Drywall CalculatorEstimate drywall sheets for walls and ceilings after subtracting openings and adding a configurable waste allowance.Transformer kVA CalculatorConvert volts and amps to transformer kVA for single-phase or three-phase systems, or convert kVA back to current.Water / Pump Horsepower CalculatorCalculate hydraulic water horsepower and required pump brake horsepower from flow, total head, specific gravity and pump efficiency.Paint CalculatorEstimate paint quantity from surface area, coats, coverage and waste.Tile CalculatorEstimate whole tiles for a floor or wall, including cutting and breakage allowance.Flooring CalculatorEstimate flooring area and whole packages from room size and package coverage, with a waste allowance.Square Footage CalculatorCalculate rectangular area in square feet and square metres from length and width.Fence CalculatorEstimate fence posts and panels from total length, maximum post spacing and panel width.Deck CalculatorEstimate deck area, decking boards and joists from dimensions, board size and spacing.Roofing CalculatorEstimate sloped roof area and roofing squares from footprint, pitch and number of roof planes.Solar Panel CalculatorEstimate annual solar generation, electricity value and simple payback using your local yield estimate.House Demolition Cost CalculatorEstimate house demolition cost with your local price per m² or square foot, debris removal, foundation removal and contingency.Mine Ventilation Pressure Drop CalculatorEstimate airway resistance, friction pressure loss and shock losses using the Atkinson equation.Belt Conveyor Capacity Calculator (TPH)Calculate belt throughput from material load cross-section, speed, bulk density and loading factor.Paste Backfill Solids & Binder CalculatorBalance dry tailings, binder, water and wet paste mass from solids concentration and binder dosage.Fill CalculatorEstimate compacted fill volume, loose delivery volume and order tonnage for a rectangular area.Self Leveling Concrete CalculatorCalculate self-leveling compound volume and whole bags using manufacturer coverage at a reference thickness.Voltage Drop CalculatorEstimate resistive voltage drop and receiving voltage for copper or aluminum DC, single-phase or three-phase circuits.Duct Size CalculatorSize round and rectangular air ducts from airflow and target velocity, with CFM or m³/h inputs.Cable Size CalculatorEstimate minimum metric cable cross-section for your voltage-drop limit, current, length and conductor temperature.Pipe Pressure Drop CalculatorCalculate pipe friction pressure loss and head loss using Darcy–Weisbach with a user-entered Darcy factor and fittings K.Conduit Fill CalculatorCalculate conduit fill percentage for multiple cable groups and the required internal diameter for your chosen limit.Lighting Lux CalculatorEstimate average lux, foot-candles and luminaire count from room area, lumens and utilization and maintenance factors.Water Pump NPSH CalculatorCalculate available pump NPSH from absolute pressure, vapor pressure, elevation and suction loss; compare with required NPSH.Kitchen Hood CFM CalculatorEstimate residential wall or island kitchen hood airflow in CFM and m³/h using HVI width-based guidance.Battery Runtime CalculatorEstimate how long a battery can power a load from usable capacity, depth of discharge and inverter efficiency.Solar Battery Size CalculatorEstimate the nominal battery capacity needed for daily energy use, backup days, usable depth of discharge and inverter losses.Air Compressor CFM CalculatorEstimate air compressor flow or receiver tank fill time from tank volume, pressure rise and delivered airflow.Well Pressure Tank Sizing CalculatorSize a bladder pressure tank from pump flow, minimum run time, switch pressures and precharge. Estimate required drawdown and nominal tank volume.Compressor Tank Fill Time CalculatorEstimate air tank filling time from volume, pressure rise and net free-air delivery.Air Receiver Tank Sizing CalculatorSize compressed-air storage for a temporary demand exceeding compressor delivery.Generator Fuel Consumption CalculatorEstimate liters, fuel cost and runtime from the manufacturer’s fuel rate at your load.Fan Law CalculatorCalculate airflow, pressure and shaft power after a fan speed change.Rainwater Harvesting CalculatorEstimate collected rainwater from rainfall, horizontal roof area and collection efficiency.Fence Post Spacing CalculatorFind evenly spaced fence bays and post counts for one straight open fence run.Welding Heat Input CalculatorCalculate arc energy and efficiency-adjusted heat input in kJ/mm and kJ/in.Compressed Air Leak Cost CalculatorEstimate annual air leakage energy and electricity cost from measured free-air flow.Compressor Duty Cycle CalculatorCalculate compressor running percentage from on/off times and compare it with the manufacturer’s rating.Rebar Development Length CalculatorCalculate basic straight-bar anchorage length from bar diameter, design steel stress and design bond strength.Pump Affinity Laws CalculatorEstimate centrifugal pump flow, head and shaft power after a speed change at fixed impeller diameter.Hydraulic Cylinder Force CalculatorCalculate extension and retraction forces with rod diameter, backpressure and efficiency.Pneumatic Cylinder Force CalculatorCalculate extension and retraction forces with rod diameter, backpressure and efficiency.Hydraulic Cylinder Speed CalculatorCalculate extension and retraction speed, oil volumes and full stroke times.Pneumatic Cylinder Air Consumption CalculatorEstimate free air per full double-acting cycle and per minute, including the rod area.Compressed Air Pipe Size CalculatorEstimate minimum internal pipe diameter from free-air flow, line pressure, temperature and target velocity.Compressed Air Pressure Drop CalculatorEstimate low-loss pipe pressure drop, velocity and Reynolds number using Darcy–Weisbach.Compressor Power CalculatorEstimate ideal isentropic power, shaft power and electrical input for single-stage air compression.Hydraulic Motor Torque CalculatorCalculate theoretical and available torque from pressure difference, displacement and mechanical efficiency.Orifice Flow Calculator — LiquidsEstimate incompressible liquid discharge through a small orifice from diameter and pressure difference.V-Belt Length CalculatorEstimate open-belt pitch length and small-pulley wrap angle from pulley pitch diameters and center distance.Pulley Speed CalculatorCalculate driven pulley RPM, transmission ratio and driver belt speed with an optional slip allowance.Shaft Torque CalculatorCalculate torque from tangential force and lever arm, plus nominal shear stress in a solid circular shaft.Motor Torque CalculatorConvert mechanical shaft power and RPM to running torque in N·m and lb·ft.Gear Ratio RPM CalculatorCalculate output RPM and torque for one external gear pair from tooth counts and efficiency.Bearing Life Calculator — Basic L10Estimate basic L10 bearing fatigue life in million revolutions and hours for ball or roller bearings.Circulating Load CalculatorCalculate grinding-circuit circulating load, total mill feed and the recycled share from dry-solids flow rates.Mill Critical Speed CalculatorEstimate theoretical mill critical speed and operating RPM from internal diameter, grinding-ball size and selected critical-speed percentage.Hydrocyclone Cut Size CalculatorFind d50 or corrected d50c by log-size interpolation between measured hydrocyclone partition points.Slurry Density CalculatorCalculate slurry density and solids volume concentration from mass concentration and material densities.Crusher Reduction Ratio CalculatorCalculate F80/P80 reduction ratio and particle-size reduction from consistent feed and product size measures.Welding Wire Consumption CalculatorEstimate deposited weld mass, solid-wire consumption and purchase mass from weld area, length and deposition efficiency.Welding Travel Speed CalculatorCalculate welding travel speed in mm/min and inches/min from weld distance and arc-on time.Hydraulic Accumulator Sizing CalculatorEstimate gas accumulator nominal volume for a required fluid delivery between minimum and maximum pressure.VFD Energy Savings CalculatorEstimate centrifugal fan or pump electricity savings using speed ratio, drive efficiency, operating hours and tariff.Motor Starting Current CalculatorEstimate balanced three-phase motor running current, starting current and starting apparent power with a supplied current multiplier.Concrete Slab CalculatorEstimate slab concrete volume with a waste allowance in metric or imperial units.Roof Pitch CalculatorConvert roof rise and horizontal run to angle, percent slope and pitch per 12.Pipe Volume CalculatorCalculate the internal capacity of a full cylindrical pipe in liters and gallons.Air Changes per Hour CalculatorCalculate air changes per hour from airflow in CFM and room dimensions in feet.Board Feet to Square Feet CalculatorConvert lumber board feet into square feet using board thickness.Concrete Block Fill CalculatorEstimate grout volume from block count, manufacturer core volume and waste.Pump Head / TDH CalculatorCalculate pump total dynamic head from elevation, pressure difference and losses.Gravel Driveway CalculatorEstimate driveway gravel volume and mass from dimensions, density and waste.Rebar Weight CalculatorEstimate steel reinforcing bar weight from diameter, length and quantity.Water Tank Fill Time CalculatorCalculate tank filling time from remaining capacity and net inflow.Board Foot CalculatorCalculate lumber board feet from thickness, width, length and board quantity.Slope Percentage CalculatorCalculate grade percentage and angle from vertical rise and horizontal run.Screen PPI CalculatorCalculate pixels per inch and compare the pixel density of two displays.Mine Ventilation Air Quantity Calculator — m³/s & CFMCalculate mine airflow from airway area and velocity. Compare configurable personnel and diesel-power criteria in m³/s, m³/min and CFM.Concrete Block CalculatorEstimate concrete blocks for a wall from net area, nominal block dimensions and a waste allowance. Includes an optional block purchase cost.Electric Bill Calculator — kWh & CostEstimate an electric bill from kWh and your price per kWh, or convert appliance watts and operating time to energy and cost.Concrete CalculatorEstimate slab concrete volume and ordering allowance.Gravel CalculatorEstimate gravel volume and mass from area, depth and bulk density.Powder Factor Calculator — Recorded ConsumptionReport recorded explosive consumption per surveyed tonne.Explosive Quantity — Inventory ReconciliationReconcile recorded opening stock, receipts, returns and closing stock.Blast Tonnage Calculator — Surveyed VolumeConvert surveyed in-situ rock volume to reported tonnes.Burden & Spacing — Measured Pattern AreaSummarise the nominal footprint of an already measured rectangular drill pattern.Drill Hole Volume CalculatorCalculate geometric cylindrical borehole volume from measured dimensions.Mining Dilution CalculatorCalculate external dilution using ore and added waste tonnes.Ore Recovery CalculatorCalculate mining recovery from extracted and available ore tonnes.Mine Production CalculatorCompare actual monthly tonnes with a target and operating days.Truck Cycle Time CalculatorSum measured loading, travel, dumping, return and delay times.Rock Tonnage & Volume CalculatorConvert rock volume to mass with an explicitly chosen density.Ohms to Kiloohms ConverterConvert electrical resistance from ohms (Ω) to kiloohms (kΩ), or back, with an exact decimal result.Drill & Blast Calculator — Drilling QuantitiesCalculate drilled metres, surveyed rock tonnage, productive drilling hours and specific drilling from measured production data.Well Pump Size CalculatorEstimate well pump total dynamic head, shaft power and electrical input from flow, pumping water level, pressure and losses.Coordinate ConverterConvert WGS84 latitude and longitude to UTM coordinates and back.Monitor Size CalculatorCalculate screen width, height, area and pixel density from diagonal size and resolution.

Practical guides: Engineering Tools

Convert Square Metres, Hectares and AcresConvert a known area without confusing square units with length, using land-area examples and sensible rounding.Excavator Productivity Calculator — Calculation guideEstimate excavator cubic metres and tonnes per hour from bucket size, cycle time, fill factor and job efficiency.Equipment Availability Calculator — Calculation guideCalculate equipment availability, operating hours, MTBF and MTTR from scheduled time, downtime and failure counts.UPS Runtime Calculator — Calculation guideEstimate UPS battery backup hours and minutes from battery voltage, amp-hours, count, usable capacity, efficiency and load.Solar Panel Tilt Angle Calculator — Calculation guideEstimate a simple fixed solar panel tilt from latitude and an optional seasonal adjustment.Haul Truck Fleet Sizing Calculator — Calculation guideEstimate the number of haul trucks needed to meet an hourly tonnage target using payload, cycle time and efficiency.How to Calculate Circulating Load: Formula & ExampleCalculate grinding-circuit circulating load, total mill feed and the recycled share from dry-solids flow rates.How to Calculate Mill Critical Speed: Formula & ExampleEstimate theoretical mill critical speed and operating RPM from internal diameter, grinding-ball size and selected critical-speed percentage.How to Calculate Hydrocyclone Cut Size: Formula & ExampleFind d50 or corrected d50c by log-size interpolation between measured hydrocyclone partition points.How to Calculate Slurry Density: Formula & ExampleCalculate slurry density and solids volume concentration from mass concentration and material densities.How to Calculate Crusher Reduction Ratio: Formula & ExampleCalculate F80/P80 reduction ratio and particle-size reduction from consistent feed and product size measures.How to Calculate Welding Wire Consumption: Formula & ExampleEstimate deposited weld mass, solid-wire consumption and purchase mass from weld area, length and deposition efficiency.How to Calculate Welding Travel Speed: Formula & ExampleCalculate welding travel speed in mm/min and inches/min from weld distance and arc-on time.How to Calculate Hydraulic Accumulator Sizing: Formula & ExampleEstimate gas accumulator nominal volume for a required fluid delivery between minimum and maximum pressure.How to Calculate VFD Energy Savings: Formula & ExampleEstimate centrifugal fan or pump electricity savings using speed ratio, drive efficiency, operating hours and tariff.How to Calculate Motor Starting Current: Formula & ExampleEstimate balanced three-phase motor running current, starting current and starting apparent power with a supplied current multiplier.How Much Mulch Do I Need? Mulch Calculator, Formula & ExamplesCalculate how much mulch you need in cubic yards, cubic feet or cubic meters. Learn the area × depth formula, bag conversion, waste allowance and a worked example.How Many Pavers Do I Need? Paver Calculator & FormulaEstimate how many patio or walkway pavers you need from project area, paver dimensions and waste. Includes square-foot formula and example.How Much Asphalt Do I Need? Asphalt Tonnage Calculator & FormulaCalculate asphalt volume and tons from length, width, compacted thickness and density. Includes Asphalt Institute density guidance and a worked example.How Many Drywall Sheets Do I Need? Drywall Calculator & ExampleEstimate drywall sheets for walls and ceilings from square footage, openings, sheet size and waste. Includes 4×8 example and practical limits.Transformer kVA Calculation: Single-Phase & Three-Phase FormulaConvert volts and amps to transformer kVA for single-phase and three-phase circuits, or calculate amps from kVA. Includes formulas and examples.Pump Horsepower Calculation: Water HP, Brake HP, GPM & HeadCalculate water horsepower and pump brake horsepower from flow, total dynamic head, specific gravity and efficiency. Includes DOE formula and example.WGS84 Latitude/Longitude to UTM: Zones, Hemispheres and AccuracyWGS84 Latitude/Longitude to UTM: Zones, Hemispheres and Accuracy — Practical steps, examples, common mistakes and FAQs on Toolnoza.How to Calculate Voltage Drop: Formula and Worked ExampleLearn the voltage drop formula for copper and aluminum circuits, account for conductor temperature, and check a worked DC and three-phase example.Cable Size Calculation: Find the Cross-Section for Voltage DropCalculate minimum cable cross-section in mm² from current, length and voltage-drop limit, then understand why ampacity needs a separate check.Duct Size Calculation: Convert CFM or m³/h to Duct DimensionsSize a round or rectangular air duct from airflow and target velocity. Follow CFM conversions, a worked example and practical sizing limits.Pipe Pressure Drop Calculation: Darcy–Weisbach Worked ExampleCalculate pipe friction pressure drop and head loss using flow, internal diameter, Darcy friction factor and fittings, with a complete water example.NPSH Calculation: Available vs Required Pump Suction HeadCalculate NPSH available from absolute pressure, vapor pressure, elevation and suction losses, then compare it with required NPSH and an entered margin.House Demolition Cost: Estimate a Budget per Square Foot or m²Learn how to estimate the cost to demolish a house, separate debris and foundation costs, add contingency and compare contractor quotes.How to Calculate Air Tank Fill Time: Formula and ExampleCalculate compressed air tank fill time from receiver volume, pressure rise and delivered airflow. Follow a worked example and use the free calculator.Well Pressure Tank Sizing: Drawdown Formula and Worked ExampleLearn how to size a well pressure tank from pump flow, minimum run time, pressure-switch settings and precharge, then verify the result against a manufacturer chart.Slope Percentage Calculator: Formula, Rise, Run and DegreesCalculate grade percentage and angle from vertical rise and horizontal run, with a worked example and the difference from roof pitch notation.Board Foot Calculator: How to Measure Lumber VolumeCalculate board feet from thickness, width, length and quantity, convert the result to cubic inches and avoid nominal-size errors.Rebar Weight Calculator: Formula by Bar Diameter and LengthEstimate reinforcing-bar mass from diameter, length and quantity using steel density, with an example and practical ordering limits.Water Tank Fill Time Calculator: Formula and Flow Rate ExampleEstimate tank fill time from capacity, current volume and net inflow, including an outflow, with assumptions and unit checks.Concrete Block Fill Calculator: Estimate Grout for Block CoresEstimate grout volume from the number of blocks, manufacturer core-fill volume and a waste allowance, with a worked example.Mine Ventilation Airflow: Calculate Q = Area × VelocityCalculate airflow in m³/s, m³/min and CFM, compare personnel and diesel criteria, and account for leakage assumptions.