• Effective Projected Area Calculator

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    Effective Projected Area Calculator Object Type: Rectangular ObjectCircular ObjectElliptical ObjectSphereCylinderConeVehicle/AircraftBuilding/StructureCustom Shape Length (L): Width (W): Diameter (D): Major Axis (a): Minor Axis (b): Diameter (D): Diameter (D): Height (H): Base Diameter (D): Height (H): Front Area (m²): Drag Coefficient (Cd): Width (W): Height (H): Shape Factor: Rectangular (1.0)Rounded corners (0.85)Cylindrical (0.75)Streamlined (0.6) Actual Area (A):…

  • Polar Area Calculator

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    Polar Area Calculator Calculation Type: Polar Function r = f(θ)Polar SectorPolar Annulus (Ring)CardioidRose CurveLimaçon Function Type: r = constantr = aθ + br = aθ² + bθ + cCustom (Manual Integration) Radius Function (r): θ Start (radians): θ End (radians): Radius (r): Central Angle (θ in radians): Or enter angle in degrees: Outer Radius (R):…

  • Wing Area Calculator

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    Wing Area Calculator Wing Type: Rectangular WingTrapezoidal WingTriangular WingElliptical WingSwept WingDelta Wing Wingspan (b): Chord Length (c): Wingspan (b): Root Chord (c₁): Tip Chord (c₂): Wingspan (b): Root Chord (c): Wingspan (b): Mean Chord (c̄): Wingspan (b): Root Chord (c₁): Tip Chord (c₂): Sweep Angle (°): Wingspan (b): Root Chord (c): Calculate Reset Wing Area…

  • TFA – Total Flow Area Calculator

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    TFA – Total Flow Area Calculator Shape Type: Circular PipeRectangular DuctSquare DuctElliptical DuctTriangular DuctMultiple Pipes/Ducts Diameter (D): Width (W): Height (H): Side Length (S): Major Axis (a): Minor Axis (b): Base (B): Height (H): Number of Identical Units: Individual Unit Area: Blockage Factor (%): Calculate Reset Gross Flow Area: Net Flow Area (TFA): Blocked Area:…

  • Surface Area of a Pipe Calculator

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    Surface Area of a Pipe Calculator Outer Radius (r₁): Inner Radius (r₂): Height (h): Calculate Reset Total Surface Area: Outer Surface Area: Inner Surface Area: Copy Results When working with cylindrical pipes—whether in construction, plumbing, HVAC systems, or industrial design—knowing the surface area is essential. From calculating material requirements to estimating paint, insulation, or coating,…

  • Credit Card Processing Fees Calculator

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    Transaction Amount $ Card Type Visa CreditVisa DebitMastercard CreditMastercard DebitAmerican ExpressDiscoverDiners ClubJCB Card Present/Present Card Present (In-Person)Card Not Present (Online/Phone)Manually Keyed Interchange Rate (%) Assessment Rate (%) Processor Rate (%) Fixed Transaction Fee $ Gateway Fee $ Monthly Processing Fee $ Monthly Transaction Volume $ Monthly Transaction Count Chargeback Fee $ Expected Chargeback Rate (%)…

  • Mortgage Profit Calculator

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    Property Purchase Price $ Down Payment $ Loan Amount $ Interest Rate (%) Loan Term (Years) Holding Period (Years) Monthly Rental Income $ Annual Rent Increase (%) Vacancy Rate (%) Annual Property Taxes $ Annual Insurance $ Annual Maintenance & Repairs $ Property Management (%) Closing Costs $ Initial Renovation Costs $ Annual Appreciation Rate…

  • Overpaying Mortgage Calculator

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    Current Loan Balance $ Interest Rate (%) Remaining Term (Years) Current Monthly Payment $ Monthly Overpayment Amount $ Overpayment Strategy Fixed Monthly AmountPercentage of IncomeAnnual Lump SumRound Up PaymentsWindfall PaymentsProgressive Increase Annual Gross Income $ Overpayment as % of Income Annual Lump Sum Payment $ Round Up To Nearest $10$25$50$100 Windfall Payment Frequency AnnualBi-AnnualQuarterlyIrregular Windfall…