Engineering Tools
Engineering
75 toolsArea and Perimeter Calculator
Calculate area and perimeter for rectangle, circle, triangle, and trapezoid.
Volume and Surface Area Calculator
Calculate volume and surface area for cube, cuboid, cylinder, sphere, and cone.
Slope and Grade Calculator
Convert rise and run to slope ratio, grade percentage, and angle.
Concrete Volume Calculator
Estimate concrete volume for slabs, footings, columns, and beams.
Rebar Weight Calculator
Estimate steel rebar weight from diameter, bar length, and quantity.
Brick and Block Quantity Calculator
Estimate brick or block quantity using wall area, unit size, mortar, and wastage.
Paint Quantity Calculator
Estimate paint requirement from area, coats, coverage rate, and wastage.
Tile Quantity Calculator
Estimate floor tile count from floor dimensions, tile size, and wastage.
Beam Reaction Calculator
Calculate support reactions for simply supported beams with UDL and point load.
Earthwork Cut and Fill Calculator
Estimate cut/fill volume and earthmoving balance with swell and shrinkage factors.
Pipe Flow Velocity Calculator
Calculate internal flow velocity from pipe diameter and volumetric flow rate.
Pipe Pressure Drop Calculator
Estimate pressure loss with Darcy-Weisbach relation from line inputs.
Pump Power Calculator
Estimate hydraulic and shaft power from flow, head, density, and efficiency.
Voltage Drop Calculator
Estimate single-phase and three-phase voltage drop from cable and load inputs.
Cable Size Calculator
Suggest a practical copper cable size from current and installation factors.
Section Properties Calculator
Calculate area and second moments of area for common section shapes.
BOQ Estimator
Estimate bill-of-quantities totals from item lines with overhead and contingency.
Bearing and Azimuth Converter
Convert surveying bearings and azimuth angles in both directions.
Chainage and Stationing Calculator
Generate chainage stations from start, interval, and count.
Leveling Rise and Fall Calculator
Calculate rise, fall, and net level change from BS/FS observations.
Coordinate Area Calculator
Calculate polygon area and perimeter from coordinates using shoelace method.
Stress and Strain Calculator
Calculate stress, strain, and approximate modulus from force and deformation.
Factor of Safety Calculator
Calculate factor of safety from strength and working stress.
Column Slenderness Calculator
Calculate KL/r slenderness ratio from effective length and radius of gyration.
Beam Deflection Calculator
Estimate simply-supported beam deflection under UDL and point load.
Material Cost Estimator
Estimate material procurement cost with tax and transport.
Labor Cost Estimator
Estimate labor spending from crew size, wage, days, and overtime.
Construction Schedule Duration Calculator
Estimate task duration from quantity, crew size, productivity, and daily hours.
Break-even Calculator
Calculate break-even units and revenue from fixed and variable costs.
Soil Bearing Capacity Calculator
Estimate gross allowable and ultimate bearing capacity from net allowable pressure and footing geometry.
Retaining Wall Pressure Calculator
Estimate active lateral earth pressure and resultant force location using Rankine method.
Compaction Control Calculator
Calculate relative compaction and moisture deviation from Proctor reference values.
Manning Flow Calculator
Compute open-channel discharge and velocity using Manning equation inputs.
Weir Discharge Calculator
Estimate rectangular and V-notch weir discharge from crest head and coefficient.
Hazen-Williams Calculator
Estimate pipe head loss and pressure drop in water lines with Hazen-Williams equation.
Cooling Load Estimator
Estimate sensible cooling demand from envelope and internal gains.
Duct Velocity Calculator
Calculate air velocity from airflow and duct dimensions for rectangular or circular ducts.
Air Change Rate Calculator
Compute required airflow for target ACH and achieved ACH from supplied airflow.
Earned Value Calculator
Calculate CPI, SPI, variances, and EAC from planned, earned, and actual cost.
Resource Allocation Calculator
Estimate team size requirements from work content, duration, and daily capacity.
Project Cash Flow Calculator
Estimate monthly net cash profile with retention and mobilization assumptions.
NPSH Available Calculator
Estimate NPSH available from pressure head, static head, and suction losses.
Pipe Friction Loss Calculator
Calculate Darcy-Weisbach friction loss from flow, pipe size, and fluid properties.
Reynolds Number Calculator
Calculate Reynolds number and determine laminar or turbulent flow regime.
Heat Exchanger LMTD Calculator
Compute logarithmic mean temperature difference for parallel and counterflow exchangers.
Psychrometric Air Properties
Estimate humidity ratio, dew point, and moist air enthalpy from dry-bulb and RH.
Compressor Power Estimator
Estimate compressor shaft power from flow, pressure ratio, and efficiency.
Infinite Slope Stability Calculator
Estimate infinite-slope factor of safety using friction angle, cohesion, and pore pressure.
Cantilever Beam Multiple Loads Calculator
Estimate fixed-end reactions and tip deflection for cantilever beam with multiple loads.
Concrete Mix Ratio Calculator
Estimate cement, sand, and aggregate quantities from nominal concrete mix ratio.
RCC Beam Design Helper
Estimate tensile steel demand for rectangular RCC beam sections from factored moment.
Slab Reinforcement Estimator
Estimate slab bar count, total bar length, and steel weight from slab dimensions and spacing.
Footing Sizing Estimator
Estimate footing area and dimensions using service load and allowable bearing pressure.
Steel Section Selector
Estimate required section modulus and indicative inertia for preliminary steel member sizing.
Wind Load Estimator
Estimate wind pressure and lateral force from speed factors, coefficients, and projected area.
Seismic Base Shear Estimator
Estimate seismic base shear using design spectral acceleration, response factor, and seismic weight.
Pump Affinity Laws Calculator
Use affinity laws to estimate flow, head, and power changes with speed or impeller diameter adjustments.
Water Hammer Pressure Estimator
Estimate surge pressure from abrupt velocity changes using Joukowsky relation inputs.
Pipe Network Headloss Calculator
Estimate headloss in a pipe run using Hazen-Williams or Darcy-Weisbach with practical unit support.
Tank Fill Drain Time Calculator
Estimate time required to fill or drain tanks from flow rate and volume values.
Orifice Flow Calculator
Estimate discharge through sharp-edged orifices from head, diameter, and coefficient of discharge.
Detention Basin Sizing Calculator
Estimate required detention storage volume using inflow, outflow, and storm duration assumptions.
Psychrometric Process Plot Helper
Compare two psychrometric states and estimate sensible and latent process components.
Chiller Tonnage Estimator
Estimate refrigeration tons from cooling load or chilled-water flow and temperature difference.
Duct Friction Rate Calculator
Estimate duct friction rate using airflow, diameter, and roughness.
Fan Static Pressure Estimator
Estimate required fan static pressure from duct and component pressure losses.
Heating Load Estimator
Estimate heating load from envelope losses, ventilation, and internal gains.
Cooling Tower Approach Range Calculator
Compute cooling tower approach, range, effectiveness, and heat rejection.
Retaining Wall Stability Check
Check overturning and sliding factors of safety for simplified cantilever retaining walls.
Bar Bending Schedule Calculator
Generate simplified rebar cut-length and weight totals by diameter and quantity.
Staircase Design Calculator
Estimate riser, tread, and stair geometry from floor height and run constraints.
Beam Shear Moment Diagram Generator
Compute support reactions and generate simplified shear and moment diagram tables.
Rainwater Harvesting Tank Sizing
Estimate storage tank size from roof area, rainfall, runoff coefficient, and demand.
Pipe Size from Flow Velocity Calculator
Calculate required internal diameter from target flow rate and design velocity.
Critical Path CPM Calculator
Compute earliest/latest times, float, and critical activities for simple CPM networks.