Science & Engineering calculators
This hub brings together technical calculators that were previously difficult to discover under a broad math label. Use the results for analysis and planning, then verify safety-, standards-, and code-sensitive work with authoritative requirements.
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available calculators
Networking
Calculate IPv4 and IPv6 subnet ranges, masks, prefixes, capacities, and child allocations.
Subnet And IP Address Calculator
Calculate IPv4 subnet details including network address, broadcast address, usable host range, subnet mask, wildcard mask, and CIDR notation.
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IPv6 Subnet Calculator
Expand or compress an IPv6 address, calculate its CIDR range and scope, create reverse DNS names, and plan exact child prefixes with 128-bit arithmetic.
Open calculatorChemistry
Work with solution dilution, density, moles, particle counts, molarity, molecular formulas, and molar mass.
Dilution Calculator
Solve C₁V₁ = C₂V₂, calculate stock and diluent volumes, plan replicates and overage, check transfer rounding, or generate an auditable serial dilution table.
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Density Calculator
Calculate density, mass, or volume with automatic SI and imperial conversion, geometric volume options, material references, significant figures, and uncertainty estimates.
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Moles Calculator
Convert mass, moles, molar mass, particles, solution molarity, and ideal-gas state values with exact Avogadro-constant handling and full equation audits.
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Molarity Calculator
Calculate molarity, mass, volume, or moles with mass, volume, concentration unit conversion and purity-adjusted solution prep math.
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Molecular Weight Calculator
Calculate approximate molecular weight and molar mass from a chemical formula such as H2O, CO2, or Ca(OH)2.
Open calculatorElectrical and logistics
Convert engineering units, identify resistors, solve circuit relationships, estimate voltage behavior, and review freight density classifications.
Unit Converter
Convert common everyday, scientific, engineering, and digital units with category-aware selectors, transparent definitions, and a complete equivalents table.
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Resistor Calculator
Decode and encode 4-, 5-, and 6-band resistor colors, read SMD markings, combine resistor networks, and size an LED current-limiting resistor.
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Ohm's Law Calculator
Solve voltage, current, resistance, and power from any two known values with SI-prefix conversion, formula steps, resistor rating context, and tolerance sensitivity.
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Voltage Drop Calculator
Estimate voltage drop, voltage drop percentage, and voltage at load from current, wire length, conductor material, phase, and wire size.
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Freight Class Calculator
Estimate LTL freight class from shipment dimensions, total weight, quantity, and density.
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