Calculate three-phase power (kW, kVA, kVAR), current (Amps), voltage, or power factor for any balanced AC circuit. Handles Line-to-Line & Line-to-Neutral voltage.

Convert watts to horsepower (HP) instantly. Perfect for electrical power, engine ratings, and mechanical calculations.

An advanced IP address subnet calculator designed for network professionals. Calculate subnets, CIDR blocks, and more with accuracy and speed.

Calculate voltage division with our precise and accessible voltage divider calculator. Ideal for electronics engineers and hobbyists.

Calculate the resistance of a substation grounding grid using IEEE Std 80 with our authoritative and accessible calculator.

Professional amps to watts calculator. Convert current (A) and voltage (V) to real power (W) for DC, single‑phase AC, and three‑phase AC systems, including power factor. Accurate, fast, and accessible.

Calculate packet loss percentage, delivery rate, and total lost packets. Enter packets sent and received (or lost) to instantly analyze network reliability.

Calculate the skin effect depth for electrical conductors with our precise, professional-grade online tool.

Calculate inductive and capacitive reactance using our authoritative and precise online tool.

Convert watts to volt-amps (VA) instantly with power factor calculation. Perfect for electrical engineering and AC power systems.

Convert amps to watts for DC, single-phase, or three-phase AC instantly. Enter current, voltage, and power factor for accurate electrical engineering calculations.

Professional NEC voltage drop calculator for DC, single-phase, and three-phase circuits. Compute voltage drop, percent drop, load voltage, and recommend the minimum copper or aluminum conductor size using the NEC K-constant method.

Professional ACI 318 concrete beam design calculator for rectangular, singly reinforced sections. Compute nominal moment Mn and design strength φMn with beta1, strain classification, and unit conversions (US/SI).

Calculate the cutoff frequency of RC filters with our precise and user-friendly tool. Perfect for electronics engineers and hobbyists.

Easily create Bode plots for control systems engineering with this interactive calculator. Designed for engineers and students to visualize frequency response.

Calculate your home appliance power consumption with our interactive tool. Understand energy usage and save on electricity bills.

Convert watts to BTU per hour instantly. Perfect for HVAC sizing, heater comparisons, and thermal power calculations.

Solve Karnaugh Maps efficiently with our interactive K-Map solver, designed for students and professionals dealing with logic problems.

Online checksum calculator. Compute CRC32, CRC16 (IBM), Adler-32, simple SUM, XOR, and cryptographic digests (MD5, SHA-1, SHA-256) from text or hex data. Useful for firmware, embedded, networking, and file integrity checks.

Professional NEC ampacity calculator. Compute allowable conductor ampacity per NEC Table 310.16 with ambient temperature and conductor bundling (310.15) adjustments. Fast, accessible, and mobile-first.

Professional ASCE 7-22 Chapter 32 Tornado Load Calculator for MWFRS and C&C. Compute tornado design pressures using mapped V_T and tornado-specific coefficients with inline validation and accessible UX.

Convert volts to watts with an engineering-grade calculator. Supports DC, AC single-phase, and three-phase with power factor. Includes formulas, step-by-step example, and FAQs.

Calculate short circuit current with precision using our authoritative calculator designed for electrical engineering applications.

Calculate masonry lintel design loads (Max Bending Moment & Shear Force) based on TMS 402/602. Accounts for arching action and superimposed loads.

Professional Ohm

Professional BS 7671 adiabatic equation calculator for UK electrical design. Compute minimum CPC size, maximum disconnection time, or permissible fault current using I²t = k²S² with k-values from BS 7671 Table 54.3.

Free root locus calculator for control systems. Enter numerator and denominator polynomials, vary the gain K, and visualize closed-loop poles, stability and damping directly in the s-plane.

Convert horsepower (HP) to watts instantly. Perfect for electrical power, engine ratings, and mechanical calculations.

Calculate fluid flow rate (liquids & gases) through an orifice plate based on ISO 5167. Enter pressure drop, density, and diameters to get mass and volumetric flow.

Use this free Kruskal

Convert watts to amps for DC, single phase, or three phase AC circuits. Easy engineering calculator with clear formulas and steps.

Convert BTU per hour to Watts instantly. Easy-to-use thermal energy to power converter with formulas and examples.