IzharReaction Enthalpy Calculator Calculate the enthalpy change (ΔH) for a chemical reaction using standard enthalpies of formation. ReactantsFormat: H2=0, O2=0 ProductsFormat: H2O=-285.8 CoefficientsFormat: H2=2, O2=1, H2O=2 Calculate Reset Calculating reaction enthalpy… Reaction Enthalpy Results ΔH (kJ/mol) – Endothermic/Exothermic – Total Reactants – Total Products – Summary Reactants: Products: Chemical Equation: Formula Used ΔH = Σ(ΔHf … Read more
Rafter Spacing Calculator Calculate the number of rafters, spacing between rafters, and coverage for your roof project. Roof length (meters) Desired spacing (mm or inches) mminches Rafter width (mm or inches) mminches Overhang at each end (meters, optional) Calculate Reset Calculating rafter layout… Rafter Layout Results Number of Rafters – Actual Spacing – Coverage Width … Read more
Rafter Size Calculator Calculate rafter length, pitch, rise, and recommend lumber size. Roof span (ft) Overhang (ft) Roof pitch (rise/run, in inches per foot) Rafter spacing (inches) Lumber type SPF (Spruce-Pine-Fir)Douglas FirSouthern Yellow Pine Calculate Reset Calculating rafter size… Rafter Results Rafter Length – Total Rise – Recommended Size – Roof Pitch (%) – Summary … Read more
Rafter Length Calculator Calculate rafter length, roof pitch, and rise for your roof project. Roof span (distance between walls, meters) Roof pitch (degrees) Overhang (meters, optional) Calculate Reset Calculating rafter length… Rafter Results Rafter Length – Roof Rise – Roof Pitch (%) – Half Span – Summary Span: Roof pitch: Overhang: Formulas Used Half span: … Read more
Prostate Size Calculator Estimate prostate volume and related metrics from ultrasound measurements. Transverse (width) mm Height (anteroposterior) mm Length (craniocaudal) mm Calculate Reset Calculating prostate size… Prostate Size Results Volume (cc/ml) – Estimated Weight (g) – Normal Range – Enlarged? – Summary Width: Height: Length: Formula: width × height × length × 0.52 Interpretation & … Read more
Prostate Measurement Calculator Calculate prostate volume and estimate enlargement using ultrasound measurements (TRUS). Width (transverse, cm) Height (anteroposterior, cm) Length (longitudinal, cm) Patient Age Calculate Reset Calculating prostate volume… Prostate Volume Results Prostate Volume – Estimated Weight – Enlargement Grade – Age Group – Summary Width: Height: Length: Age: Formula Used TRUS Ellipsoid: Volume = … Read more
Prorate Calculator Calculate prorated charges for rent, subscriptions, salaries, or other services. Full Amount (monthly) $ Start Date End Date Days in month Calculate Reset Calculating prorate… Prorate Results Total Days – Prorated Amount – Daily Rate – Full Amount – Summary Start Date: End Date: Days in Month: Full Amount: Prorate Formula Daily Rate: … Read more
Property Lease Calculator Estimate your total lease cost, monthly payments, and cash needed upfront. Monthly Rent $ Lease Duration (months) Security Deposit $ Advance Rent Paid (months) Other Fees (application, cleaning, etc.) $ Calculate Reset Calculating lease details… Lease Results Total Lease Cost – Monthly Rent – Upfront Payment – End of Lease Remaining – … Read more
PPR Calculator (Points Per Reception) Calculate fantasy football Points Per Reception (PPR) and total fantasy score. Receptions Receiving Yards Receiving TDs Rushing Yards Rushing TDs Fumbles Lost Calculate Reset Calculating fantasy score… PPR Fantasy Results Total Points – PPR Points – Receiving Points – Rushing Points – Summary Receptions: Receiving Yards: Receiving TDs: Rushing Yards: … Read more
Port Size Calculator Estimate recommended port diameter and area for your engine or enclosure. Enclosure/Internal Volume (Liters) Tuning Frequency (Hz) Amplifier Power (Watts) Number of Ports Calculate Reset Calculating recommended port size… Port Size Results Recommended Port Diameter – Total Port Area – Per Port Area – Minimum Port Length (Est. cm) – Summary Enclosure … Read more
Pool Salt Calculator Calculate the amount of salt needed for your pool to reach the desired salinity. Pool Volume LitersGallons (US) Current Salt Level (ppm) Desired Salt Level (ppm) Calculate Reset Calculating salt amount… Salt Addition Results Salt Needed – Final Salt Level – Volume Used – Unit – Summary Pool volume: Current salt (ppm): … Read more
Pokemon Fusion Calculator Fuse two Pokémon and calculate combined stats, types, and abilities. First Pokémon Name Second Pokémon Name Fusion Rule Average Stats & Mix TypesMax Stats & Dominant TypeCustom Fusion (advanced) Calculate Fusion Reset Fusing Pokémon… Fusion Results Fusion Name – Fusion Types – Fusion Abilities – Fusion Stats – Summary First Pokémon: Second … Read more
Phenotypic Age Calculator Estimate your biological age based on key blood biomarkers. Chronological Age (years) Albumin (g/dL) Creatinine (mg/dL) Glucose (mg/dL) Lymphocyte Percentage (%) Mean Cell Volume (fL) Red Cell Distribution Width (%) Alkaline Phosphatase (U/L) White Blood Cell Count (1000 cells/uL) Calculate Reset Calculating phenotypic age… Phenotypic Age Results Phenotypic Age – Age Difference … Read more
Percentile Weight Girl Calculator Estimate the weight percentile for a girl using CDC growth charts. Age (years) Weight (kg) Calculate Reset Calculating percentile… Percentile Results Percentile – Compared to Peers – Median Weight – Z-Score – Summary Age: Weight: Median Weight (CDC): Growth Chart Notes Percentile Range: 3rd – 97th percentile is normal Source: CDC … Read more
Percentages Calculator Calculate percentage values, percentage changes, and find what percent one number is of another. Calculation Type What is X% of Y?Percent Change (from X to Y)What percent is X of Y?Increase Y by X%Decrease Y by X% Number X Number Y Calculate Reset Calculating percentage… Percentages Results Result – Formula – Summary Calculation … Read more
Percentage Decline Calculator Calculate the percentage decrease between two values and see useful details. Initial Value Final Value Calculate Reset Calculating percentage decline… Decline Results Decline Amount – Decline (%) – Final Value – Initial Value – Summary Initial Value: Final Value: Decline Amount: Decline Percentage: Useful Notes Formula: ((Initial – Final) / Initial) × … Read more
Percent CV Calculator Coefficient of Variation (% CV) for your dataset or values Enter values (comma, space or line separated) Calculate Reset Calculating %CV… CV Results Mean – Standard Deviation – %CV – Number of Values – Summary Values entered: Formula: (Standard deviation / Mean) × 100 Copy Results Share Results The Percent CV Calculator … Read more
Paypal Commission Calculator Calculate Paypal fees and commissions for your transactions. Amount to receive/send $ Country United StatesEuropeUnited KingdomIndiaOther Transaction Type Goods & ServicesFriends & FamilyMicropayment Calculate Reset Calculating Paypal commission… Commission & Fee Results Fee – Amount Received – Amount to Send – Percent Fee – Summary Country: Transaction Type: Amount: Fees Explanation Standard: … Read more
Biweekly Mortgage Calculator See how paying your mortgage biweekly can save you money and shorten your loan! Loan amount $ Interest rate (%) Loan term (years) Calculate Reset Crunching the numbers… Biweekly Mortgage Results Monthly Payment – Biweekly Payment – Interest Saved – Years Saved – Summary Loan Amount: Interest Rate: Loan Term: Payments/year: Benefits … Read more
Parabola Calculator Find vertex, focus, directrix, axis of symmetry, and more for y = ax² + bx + c a (coefficient of x²) b (coefficient of x) c (constant) Calculate Reset Calculating parabola properties… Parabola Results Vertex (h, k) – Focus – Directrix – Axis of Symmetry – Summary Equation: a: b: c: Opens: Formulas … Read more
OSRS Combat Level Calculator Calculate your Old School RuneScape combat level from your skill levels. Attack level Strength level Defence level Hitpoints level Ranged level Magic level Prayer level Calculate Reset Calculating combat level… Combat Level Results Combat Level – Max Melee – Max Ranged – Max Magic – Summary Attack: Strength: Defence: Hitpoints: Ranged: … Read more
Orthonormal Basis Calculator Enter vectors, get an orthonormal basis via Gram-Schmidt process Enter vectors (comma separated, one per line): Example: 1,0,01,1,01,1,1 Calculate Reset Processing Gram-Schmidt… Orthonormal Basis Input Vectors Number of vectors: Dimension: Method Process: Gram-Schmidt Orthonormalization Copy Results Share Results Linear algebra is one of the most powerful branches of mathematics, and orthonormal bases … Read more
Orthogonal Basis Calculator Enter vectors (one per line) to find an orthogonal basis using Gram-Schmidt process. Vectors (comma separated, one per line) Example: 1,2,3 (press Enter for next vector) Calculate Reset Calculating orthogonal basis… Orthogonal Basis Results Input Vectors – Orthogonal Basis – Orthonormal Basis – Steps Used – Summary Vectors entered: Dimension: Gram-Schmidt Formula … Read more
Options Call Calculator Estimate profit, breakeven, and ROI for a call option position. Current Stock Price $ Strike Price $ Option Premium (per contract) $ Number of Contracts 1 contract = 100 shares Expected Stock Price at Expiry $ Calculate Reset Calculating option results… Call Option Results Breakeven Price – Max Profit – Max Loss … Read more
Oklahoma Tag Cost Calculator Estimate annual vehicle registration (tag) cost for Oklahoma. Vehicle Type Car/SUVTruckMotorcycleCommercial Vehicle Model Year Original Purchase Price $ Years Owned Calculate Reset Calculating Oklahoma tag cost… Tag Cost Results Current Tag Fee – Excise Tax (Initial) – Total Fees Paid – Next Renewal Estimate – Summary Vehicle Type: Model Year: Original … Read more
Oklahoma Tag Calculator Estimate Oklahoma vehicle registration/tag fees and taxes for your car or truck. Vehicle type Passenger CarTruckMotorcycleOther Purchase Price $ Vehicle Model Year Year Purchased Is the vehicle new? YesNo Calculate Reset Calculating your Oklahoma tag fees… Oklahoma Tag Calculation Results Excise Tax – Tag Registration Fee – Title Fee – Total Fees … Read more
Oklahoma Car Tag Calculator Estimate your Oklahoma car registration (tag) cost for new and renewal registrations. Vehicle Type Passenger CarTruckMotorcycle Model Year Purchase Price $ Years Owned Calculate Reset Calculating tag fee… Oklahoma Tag Fee Results Tag Fee – Excise Tax – Total Due – Estimated Renewal Fee – Summary Vehicle type: Model year: Purchase … Read more
Nursing Salary Calculator Estimate your nursing salary, overtime, taxes, and net income. Hourly wage $ Hours per week Overtime hours per week Overtime rate multiplier x1.5 (Standard)x2 (Double Time)x1.25 Estimated tax rate (%) Calculate Reset Calculating salary… Salary Results Gross Weekly – Gross Monthly – Gross Yearly – Net Yearly – Summary Hourly rate: Weekly … Read more
Null Space Calculator Find the null space (kernel) and dimension of your matrix. Enter matrix (rows separated by semicolon, numbers by comma) Calculate Reset Calculating null space… Null Space Results Null Space (Kernel) – Nullity (Dimension) – Summary Matrix entered: Rows × Columns: About Null Space Definition: Set of all x where Ax = 0 … Read more
NTTA Toll Calculator Estimate your tolls for North Texas Tollway Authority roads and plan your costs! Select Toll Road Dallas North Tollway (DNT)President George Bush TurnpikeSam Rayburn TollwayChisholm Trail ParkwayMountain Creek Lake Bridge Vehicle Type Car / Pickup / SUV2-Axle Truck3-Axle Truck4+ Axle Vehicle Trip Type Full RoadShort Segment Number of Trips Do you have … Read more