All Calculators

Storage Calculators

Plan capacity, performance, and reliability decisions for storage and PC hardware. 16 tools

Disk RAID CalculatorCompare usable RAID capacity for RAID 0, 1, 5, 6, 10, 50, 60, JBOD, hot spares, overhead, and TB/TiB display settings.Interactive calculator
RAID 5 Capacity CalculatorCalculate RAID 5 usable capacity in TB and TiB, then account for parity, hot spares, filesystem allowance, free-space reserve, current data, and headroom.Interactive calculator
RAID 6 CalculatorCalculate RAID 6 usable capacity from drive count, drive size, dual-parity reserve, hot spares, overhead, efficiency, and TB/TiB units.Interactive calculator
RAID 10 CalculatorCalculate RAID 10 usable capacity from drive count, size, hot spares, and filesystem overhead. See mirror pairs, unused drives, efficiency, and failure limits.Interactive calculator
Mixed Drive RAID CalculatorCalculate mixed-drive RAID usable capacity, smallest-drive limit, wasted space, parity reserve, hot-spare impact, and upgrade tradeoffs.Interactive calculator
NAS Capacity CalculatorPlan NAS usable capacity from bays, drive size, RAID mode, hot spares, filesystem overhead, free-space headroom, and TB/TiB units.Interactive calculator
CCTV / Surveillance Storage CalculatorCalculate CCTV or security camera storage from camera count, bitrate, recording hours, motion percentage, retention days, RAID/headroom, and units.Interactive calculator
Memory Card CalculatorCalculate SD or microSD card capacity for photos and video minutes from card size, file size, bitrate, usable capacity, and safety buffer.Interactive calculator
Download Time CalculatorCalculate download or upload time from MB, GB, TB, MiB or GiB and speeds in Mbps, Gbps or MB/s. Compare ideal time, transfer loss and effective speed.Interactive calculator
Memory Timing CalculatorConvert DDR4 or DDR5 MT/s, CL, tRCD, tRP, and tRAS to nanoseconds. Compare two RAM kits side by side with worked examples and clear limitations.Interactive calculator
Cable CalculatorEstimate voltage drop from wire gauge, material, current, length, voltage, and phase.Safety-focused planning guide
VRAM CalculatorEstimate recommended GPU memory from resolution, quality, monitors, creator workloads, or AI model size.Interactive calculator
RF Path CalculatorEstimate free-space path loss, received signal, and fade margin from frequency, distance, and antenna gains.Planning guide
Windows Storage Spaces CalculatorEstimate usable capacity and efficiency for two-way mirror, three-way mirror, or parity layouts.Planning guide
Linux Chmod CalculatorConvert read, write, and execute permissions into numeric and symbolic chmod values.Interactive calculator
Battery & UPS Runtime CalculatorEstimate ideal and adjusted battery or UPS runtime from amp-hours or watt-hours, load, usable capacity, efficiency, idle draw, and uncertainty.Interactive calculator

Home Project Calculators

Estimate materials and quantities for practical home projects with visible assumptions. 15 tools

Pool & Water Calculators

Plan pool volume and water adjustments conservatively, with product-label reminders. 10 tools

Pool Chemical CalculatorPlan conservative chlorine, pH, alkalinity, and stabilizer adjustments from current readings, target readings, and test confidence.Safety-focused planning guide
Pool Volume CalculatorEstimate pool gallons from shape, dimensions, and average depth before dosing chemicals.Interactive calculator
Chlorine CalculatorEstimate liquid chlorine needed to raise free chlorine for a known pool volume and product strength.Safety-focused planning guide
Pool pH CalculatorPlan a cautious pH adjustment direction from current and target readings.Safety-focused planning guide
Pool Alkalinity CalculatorEstimate alkalinity adjustment amount from pool volume and desired ppm change.Safety-focused planning guide
Pool Stabilizer CalculatorEstimate stabilizer change from pool volume and target CYA increase.Safety-focused planning guide
Saltwater Pool CalculatorEstimate salt additions for a saltwater chlorine generator target range.Safety-focused planning guide
Pool Water Balance CalculatorCheck common pH, alkalinity, and stabilizer ranges and which reading to address first.Safety-focused planning guide
Chemical Dosing CalculatorEstimate a generic dose amount from volume, desired ppm change, and product concentration factor.Safety-focused planning guide
Aquarium Ammonia CalculatorEstimate free ammonia from total ammonia, pH, and temperature with a conservative toxicity warning.Safety-focused planning guide

Shipping Calculators

Estimate shipping quantities, costs, and loading geometry before requesting a quote. 7 tools

Lifestyle Calculators

Handle everyday sizing, photography, wrapping, and seasonal planning questions. 5 tools

Sports & Hobby Calculators

Explore pace, motion, and sizing calculations with explicit assumptions and limits. 4 tools

Business Calculators

Plan margin and language-service decisions from entered prices, costs, and volumes. 3 tools

Math & Education Calculators

Calculate arithmetic, scientific expressions, units, dates, algebra, physics, and education formulas with visible methods. 9 tools

Finance & Everyday Money Calculators

Compare currency, bills, discounts, and fixed-rate loan scenarios with visible rates, rounding, and assumptions. 4 tools

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