PRACTICAL CRANE CALCULATIONS
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30 calculators · 6 categoriesCrane planning
Loads, units, movement and workshop space.
01Total Lifting LoadAdd the payload, attachment and rigging to define everything carried below the hook.02Crane Unit ConverterConvert mass, force, length and speed while keeping metric, US and UK units clearly identified.03Hoist Lifting TimeEstimate upward and optional downward travel time, then add your measured handling time.04Available Lifting HeightCheck how far a load can rise within a proposed roof, crane and rigging arrangement.05Crane Hook CoverageCompare the rectangular hook coverage with your workshop floor area.
Loads & rigging
Material mass, balance and lifting forces.
06Steel and Material WeightEstimate solid plate, round bar, tube or rectangular hollow-section mass from measured dimensions.07Combined Centre of GravityLocate the combined horizontal centre of gravity of up to three known mass groups.08Two-Leg Sling Angle and TensionCalculate ideal static leg tension for a centred load and two equal, symmetric sling legs.09Two Lifting Point Load DistributionCalculate vertical lifting-point reactions from the load mass and centre-of-gravity position.10Hoist Reeving Line PullEstimate the rope line pull for a specified suspended mass, supporting rope parts and reeving efficiency.
Beams & sections
Cross-sections, beam response and elastic stability.
11Beam Section PropertiesCalculate area, centroid, second moments of area and elastic section moduli for common symmetric sections.12Simply Supported Beam AnalysisAnalyse one downward point load plus a full-span uniform load on a constant-section beam.13Two-Wheel Moving Load BeamEstimate maximum beam actions as two fixed-spacing downward wheel forces cross a simple span.14Projected Bearing StressCalculate nominal compression over a specified rectangular projected bearing area.15Ideal Beam Elastic Critical MomentCalculate the classical elastic lateral–torsional buckling moment for a narrowly defined ideal I-beam case.
Hoisting & travel
Power, rope capacity, speed and stopping.
16Hoisting PowerEstimate steady lifting power from the suspended mass, lifting speed and total drive efficiency.17Crane Travel PowerEstimate the traction force and drive power for an entered rolling resistance, slope and acceleration.18Wire Rope Drum CapacityEstimate rope storage and usable payout from drum dimensions, winding pitch, layers and retained wraps.19Gear Ratio & Travel SpeedConvert motor speed, total reduction ratio and effective wheel or drum diameter into line speed.20Crane Stopping DistanceEstimate travel during control delay, constant-deceleration stopping distance and translational braking energy.
Site & supports
Reactions, base pressures, wind and temperature.
21Bridge Crane Wheel LoadEstimate ideal static runway reactions and equally shared wheel loads for an entered trolley position.22Gantry Overturning MomentCompare entered restoring and overturning actions about one explicitly selected tipping edge.23Rectangular Foundation PressureCalculate a rigid rectangular base pressure distribution under axial force and biaxial moments.24Crane Wind ForceEstimate wind force and its moment from entered speed, air density, projected area and drag coefficient.25Rail & Structure Thermal ExpansionEstimate free thermal expansion or contraction for an entered length, temperature change and material coefficient.
Power & duty
Cable drop, energy, load history and service time.
26Cable Voltage DropEstimate resistive voltage drop using cable length, conductor area, load current and conductor temperature.27Crane Cycle Energy & Operating CostEstimate electricity use and USD operating cost from entered electrical power, stage times and annual usage.28Cubic Load Spectrum IndicatorSummarize four entered load bands as a cycle-weighted cubic load indicator relative to a reference load.29Mechanism Service-Duty AnalysisEstimate mechanism operating hours and cubic full-load equivalent hours over an entered service period.30Miner Fatigue DamageSum linear fatigue damage for entered cycle counts and corresponding allowable cycles from your selected fatigue model.
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