AliRAID Capacity Calculator Number of Drives: Drive Size (GB): RAID Level: RAID 0 (Striping)RAID 1 (Mirroring)RAID 5 (Striped w/ Parity)RAID 6 (Double Parity)RAID 10 (1+0)JBOD (Just a Bunch Of Disks) Calculate Reset RAID Capacity Results RAID Level Usable Capacity (GB) Fault Tolerance RAID Level Reference RAID Usable Capacity Formula Fault Tolerance RAID 0 N × … Read more
Radius of Convergence Calculator Input Type: Sequence of coefficients (aₙ)Term formula aₙ (basic, e.g. 1/n!) Enter coefficients a₀, a₁, a₂, … (comma or space separated): Enter aₙ formula (in n): Calculate Reset Calculating radius of convergence… Result Radius of Convergence: – Test Used: – Calculation Steps: – For a power series Σ aₙxⁿ, the radius … Read more
Quadratic Regression Calculator X Values (comma or space separated): Y Values (comma or space separated): Calculate Reset Calculating quadratic regression… Quadratic Regression Result Equation: – a (x²): – b (x): – c (constant): – R² (fit): – Quadratic regression finds the best-fit curve y = a·x² + b·x + c for your data using least … Read more
Punch Calculator Your Mass (kg): Fist Speed at Impact (m/s): Contact Time (seconds): Estimate Fist+Forearm Mass (kg): Calculate Reset Calculating… Punch Results Kinetic Energy: – Estimated Force: – Momentum: – Impact Pressure (Pa): – The physics of a punch: Kinetic energy = ½mv², Force ≈ momentum/contact time. Copy Results Share Results Ever wondered how powerful … Read more
Pulley Size Calculator Driver Pulley RPM: Driver Pulley Diameter (inches): Driven Pulley RPM (desired): Calculate Reset Calculating… Calculation Result Required Driven Pulley Diameter: – Formula Used: – The driven diameter = (driver diameter × driver RPM) / driven RPM. Copy Results Share Results When working with pulley systems in machinery, HVAC units, conveyors, or automotive … Read more
Pulley RPM Calculator Driver Pulley Diameter (D₁): units Driver Pulley RPM (N₁): RPM Driven Pulley Diameter (D₂): units Calculate Reset Calculating Pulley RPM… Pulley Calculation Result Driven Pulley RPM (N₂): – Formula: – Formula: N₂ = (D₁ × N₁) / D₂ Where: D₁ = Driver Pulley Diameter N₁ = Driver Pulley RPM D₂ = Driven … Read more
Pulley Calculator Pulley 1 Diameter (mm): Pulley 2 Diameter (mm): Pulley 1 RPM: Calculate: Pulley 2 RPMPulley 1 RPM Calculate Reset Calculating… Results Pulley 2 RPM: – Formula: – To find output RPM: (Input Pulley Diameter / Output Pulley Diameter) × Input Pulley RPM Copy Results Share Results Pulleys are essential components in mechanical systems, … Read more
Projector Size Calculator Throw Distance (ft): Throw Ratio: Aspect Ratio: 16:9 (Widescreen HD)16:10 (Widescreen WXGA/WUXGA)4:3 (Standard)21:9 (Cinematic UltraWide)Custom Custom Aspect Ratio (W : H): : Calculate Reset Calculating… Screen Size Results Image Width: – Image Height: – Diagonal: – Aspect Ratio: – Screen width = Throw distance ÷ Throw ratio. Height based on aspect ratio. … Read more
Probability Distribution Calculator Distribution Type: BinomialNormal (Gaussian)Poisson Calculate Reset Calculating… Calculation Results Distribution: – Parameters: – P(X = k): – Mean (μ): – Std Dev (σ): – Choose a distribution and enter its parameters to calculate probability and summary statistics. Copy Results Share Results Understanding probability distributions is essential in statistics, data science, and decision-making. … Read more
Pro Rata Calculator Total Amount: Your Portion (e.g. days, shares): Total Portions (e.g. days in period, total shares): Calculate Reset Calculating… Pro Rata Result Your Pro Rata Share: – Formula Used: – Pro rata = (Your Portion / Total Portions) × Total Amount Copy Results Share Results When dealing with money, investments, rent, or salaries, … Read more
Priority Date Calculator Priority Date (start date): Days to Add: Calculate Reset Calculating… Calculation Result Start Date: – Days Added: – Resulting Date: – The priority date calculator adds a specified number of days to a given start date. Copy Results Share Results Time management and scheduling often require precise date calculations. Whether you’re planning … Read more
Pressure Altitude Calculator Field Elevation: ft Altimeter Setting (QNH): inHg Calculate Reset Calculating… Calculation Result Pressure Altitude: – Formula: – Pressure Altitude = Field Elevation + [1000 × (29.92 – Altimeter Setting)] Copy Results Share Results In aviation, precision is everything. Pilots rely on accurate altitude readings for safe navigation, aircraft performance, and compliance with … Read more
Power To Weight Calculator Power: hpkWWPS (metric hp) Weight: kglbtonne Calculate Reset Calculating… Calculation Result Power-to-Weight (hp/kg): – Power-to-Weight (hp/tonne): – Power-to-Weight (W/kg): – Power-to-Weight (hp/lb): – Enter your vehicle’s power and weight. Power-to-weight ratio = Power ÷ Weight. Results shown in various units. Copy Results Share Results When it comes to vehicles, performance is … Read more
Poverty Line Calculator (US, 2024) Household Size: State: Contiguous USAlaskaHawaii Your Household Pre-tax Income (USD): Calculate Reset Calculating… Poverty Line Result Household Size: – State: – 2024 Poverty Line: – Your Income: – Below Poverty Line? – Poverty line is based on 2024 US Federal Poverty Guidelines. Programs may use 100%, 133%, 138%, 150%, or … Read more
Pokémon Stat Calculator Level: Base Stat: IV (0-31): EV (0-252): Nature: Neutral (x1)Beneficial (+10%)Hindering (-10%) Stat Type: HPOther Stat (Atk, Def, etc.) Calculate Reset Calculating stats… Stat Calculation Result Final Stat: – Formula Used: – Pokémon stats are calculated using base stats, IVs, EVs, level, and nature. HP uses a different formula from other stats! … Read more
Poisson Probability Calculator Expected occurrences (λ): Number of events (k): Calculate Reset Calculating… Poisson Probability Result P(X = k): – Formula: – λ (mean rate): – k (events): – The Poisson probability formula: P(X = k) = (λ^k × e^(−λ)) / k! Copy Results Share Results The Poisson Probability Calculator is an online tool designed … Read more
PODS Moving Cost Calculator Distance (miles): PODS Container Size: 8 ft (Studio/1BR)12 ft (2-3BR)16 ft (3-4BR/Whole House) Number of Containers: Include 1 Month Storage? NoYes (+$200 per container) Insurance Option: NoneBasic (+$34/container)Plus (+$70/container) Calculate Reset Calculating your PODS moving cost… Estimated PODS Moving Cost Base Cost: – Storage Fee: – Insurance Fee: – Total Cost: … Read more
Plywood Layout Calculator Sheet Width (inches): Sheet Height (inches): Piece Width (inches): Piece Height (inches): Total Pieces Needed: Blade Kerf (cut width, inches): Calculate Reset Calculating optimal layout… Layout Result Sheets Needed: – Pieces Per Sheet (Best Orientation): – Total Pieces Fit: – Waste Per Sheet (sq in): – This calculator finds how many pieces … Read more
Playlist Time Calculator Enter song/video times (HH:MM:SS, MM:SS, or SS). Separate each with comma, space, or new line: Calculate Reset Calculating total time… Playlist Time Results Total Time: – Number of Tracks: – Average Time: – Paste a list of durations (like 3:45, 1:10:12, etc). The calculator adds them all up! Copy Results Share Results … Read more
Playlist Length Calculator Enter Track Lengths (hh:mm:ss, mm:ss, or ss) (One per line, e.g., 3:23 or 01:05:15) Calculate Reset Calculating playlist length… Playlist Total Length Tracks: – Total Time: – In Hours: – In Minutes: – In Seconds: – Enter each track length on its own line using hh:mm:ss, mm:ss, or seconds. The calculator will … Read more
Managing playlists can be fun, but calculating the total playtime of all tracks can quickly become a hassle—especially if you’re planning a party, workout session, or event where timing matters. The Playlist Duration Calculator is a free, user-friendly tool designed to instantly add up track lengths and display the exact total in hours, minutes, and … Read more
Pizza Hydration Calculator Flour Weight (g): Hydration (%) (typical: 58-75): Calculate Reset Calculating… Pizza Dough Formula Flour: – Water: – Hydration %: – Salt (2%): – Yeast (0.2%): – Hydration is the ratio of water to flour, expressed as a percentage. Higher hydration makes lighter, airier dough but can be stickier to handle. Copy Results … Read more
Pizza Dough Hydration Calculator Flour Weight (grams): Water Weight (grams): Calculate Reset Calculating hydration… Hydration Result Dough Hydration: – Formula: – Hydration (%) = (Water Weight ÷ Flour Weight) × 100 Copy Results Share Results Making the perfect pizza starts with the dough, and dough quality depends heavily on hydration percentage—the ratio of water to … Read more
Pizza Dough Calculator Number of Pizzas: Dough Ball Weight (g): Hydration (% water): Salt (% of flour): Yeast (% of flour, instant dried): Calculate Reset Calculating pizza dough… Dough Recipe Flour: – Water: – Salt: – Yeast: – Total Dough Weight: – Classic Neapolitan pizza: 62-65% hydration, 2.5% salt, 0.1-0.5% yeast (dried), 250g dough ball. … Read more
Pipeline Capacity Calculator Pipe Inner Diameter: mmincmm Flow Velocity: m/sft/s Pipe Length (optional): mft Calculate Reset Calculating capacity… Pipeline Capacity Results Flow Rate (m³/h): – Flow Rate (L/s): – Flow Rate (GPM): – Pipe Volume: – Flow rate Q = (π/4) × D² × V, where D is diameter and V is velocity (in compatible … Read more
Pipeline Calculator Length (meters): Diameter (mm): Wall Thickness (mm): Material: Steel (ρ ≈ 7850 kg/m³)Copper (ρ ≈ 8940 kg/m³)PVC (ρ ≈ 1400 kg/m³)Aluminum (ρ ≈ 2700 kg/m³)Custom (enter density) Custom Density (kg/m³): Calculate Reset Calculating… Pipeline Results Pipe Volume: – Pipe Weight: – Internal Volume (Capacity): – Material Density: – Volume = π × (outer² … Read more
Pine Tree Removal Cost Calculator Tree Height (feet): Trunk Diameter (inches): Location: Easy Access (open yard)Medium Access (fence/near house)Difficult Access (powerlines, tight space) Include Stump Removal? NoYes Number of Trees: Calculate Reset Calculating cost… Estimated Removal Cost Estimated Cost (Total): – Estimated Cost (Per Tree): – Tree Height: – Trunk Diameter: – Location Factor: – … Read more
Permutations Calculator n (Total items): r (Items chosen): Calculate Reset Calculating… Calculation Result Permutations (nPr): – Formula: – The formula for permutations is: nPr = n! / (n – r)! Copy Results Share Results Understanding permutations is a fundamental part of mathematics, especially in statistics, probability, and combinatorics. Whether you’re a student, educator, or professional, … Read more
Percentage Improvement Calculator Original Value: New Value: Calculate Reset Calculating… Calculation Result Percentage Improvement: – Formula: – To calculate percentage improvement, use: ((New Value – Original Value) / Original Value) × 100 Copy Results Share Results Measuring improvement is essential in business, education, fitness, or personal growth. Tracking progress not only motivates but also provides … Read more
Percent From Number Calculator Percent (%): Of Number: Calculate Reset Calculating… Calculation Result Result: – Formula: – To find P% of N, use: (P / 100) × N Copy Results Share Results Percentages are everywhere—from shopping discounts to financial planning, grades, and data analysis. Calculating them manually can be time-consuming and error-prone. The Percent From … Read more