All Calculators
Every Standard Clarity tool in one place - each tied to the IPC, IEC, UL, NEMA or NEC clause it comes from.
Find the calculation by engineering task
Use the discipline groups below rather than choosing a formula by name alone. Start with the design decision you need to make, then check the result against the cited standard edition and the assumptions shown by the tool.
Start here
Size traces, vias and impedance
Use current, copper thickness, temperature rise and stack-up geometry to choose a starting layout.
EnclosuresChoose ingress and safety protection
Decode IP and NEMA ratings, insulation spacing and UL 94 material classifications.
ConversionsConvert engineering units and markings
Handle AWG, battery energy and capacitor codes with the formula and assumptions visible.
Browse all calculators by discipline
PCB design
Size copper, estimate resistance and check controlled-impedance geometry.
PCB Trace Width Calculator
IPC-2221Compare the familiar legacy trace-current relationship with a published approximation based on IPC-2152 data. Solve width, current or…
PCB Trace Resistance Calculator
IPC-2221CFind the DC resistance, voltage drop and power loss of a copper PCB trace from its width, copper…
PCB Via Current Calculator
Barrel-as-trace estimateEstimate a plated via or an equal-sharing array with an unrolled-barrel trace analogy. Solve current, via count or…
PCB Impedance Calculator
IPC-2141AEstimate microstrip, stripline, grounded coplanar or differential impedance, or solve a microstrip width for a target. Each mode…
Enclosure protection and electrical safety
Decode ingress ratings, select enclosure types, size insulation spacing and screen material flammability.
IP & NEMA Rating Decoder
IEC 60529 / NEMA 250Decode a supported IP designation or NEMA enclosure type in plain language, with the standard context kept explicit.
NEMA Enclosure Type Selector
ANSI/NEMA EN 10250-2024Describe the environment and screen for a NEMA enclosure type that covers the selected conditions, or compare two…
Pollution Degree 1-4 Selector
IEC 60664-1Choose the conditions that can reach the insulating surface. The result updates as you go and gives a…
Creepage & Clearance Calculator
IEC 60664-1Estimate creepage and clearance from the stored reference data, with explicit input limits and the calculation shown.
UL 94 Flammability Rating Selector
UL 94 / IEC 60695-11Compare UL 94 material classifications and review what evidence is still needed before applying a class to a…
Electrical conversions and component references
Convert wire, battery-energy and capacitor markings without hiding the underlying relationship.
AWG to mm² Converter
ASTM B258-18(2026)Convert American Wire Gauge to diameter and cross-section and back, including explicit AWG ↔ mm² input, copper resistance…
mAh to Wh Calculator
Energy = charge x voltageConvert milliamp-hours (mAh) or amp-hours (Ah) to watt-hours (Wh), or reverse Wh to a charge capacity, using the…
Capacitor Code Calculator
IEC 60062Decode the markings on a ceramic, film or SMD capacitor into picofarads, nanofarads and microfarads - and convert…