Tech And Electronics calculators
40 calculators Byte Conversion Calculator Convert bytes, KB, MB, GB, TB, PB in binary (1024) or decimal (1000) mode. Includes bits, a decimal-vs-binary comparison, and a download time estimator.
Open 3D Printing Cost Calculator Calculate the real cost of any 3D print: filament, electricity, machine wear, failure rate, and optional markup. Covers FDM and resin. Results update instantly.
Open Amdahl's Law Calculator Calculate theoretical speedup, parallel efficiency, max speedup limit, and processors needed using Amdahl's Law. Free online tool with formula, steps, and chart.
Open Battery Capacity Calculator Convert between mAh, Ah, and Wh, find battery runtime, charge time, C-rate, and cost per charge for any device or battery chemistry. Free, instant results.
Open Battery Life Calculator Calculate battery runtime from capacity (mAh/Ah/Wh) and current draw (mA/A). Models sleep-cycle devices, applies efficiency derating, and solves for required capacity.
Open Battery Size Calculator Find the exact battery capacity you need (Ah and Wh) for any load, runtime, voltage and chemistry. Covers lithium-ion, LiFePO4, AGM, gel, and flooded batteries.
Open Cable Impedance Calculator Calculate cable impedance for coaxial, twisted-pair, and power cables. Get impedance, capacitance, inductance, propagation delay, reactance, and voltage drop instantly.
Open Capacitance Converter Convert capacitance between farads, millifarads, microfarads, nanofarads and picofarads instantly. See all five unit values, the capacitor code, and worked conversion steps.
Open Chmod Calculator Convert octal chmod values to symbolic rwx notation instantly. Generate chmod commands with owner, group, and other permissions, plus setuid, setgid, and sticky bit support.
Open CIDR Calculator Free CIDR calculator: enter any IPv4 address and prefix length to instantly get the subnet mask, wildcard mask, network address, broadcast address, and usable host range.
Open PCB Crosstalk Calculator - NEXT and FEXT Calculate NEXT and FEXT crosstalk for PCB microstrip and stripline traces. Get coupling coefficients, coupled voltages, saturation length, and 3W spacing recommendations.
Open Drone Flight Time Calculator Calculate drone flight time from battery capacity, voltage, drone weight and flying style. Includes safe discharge margin, payload impact, and a battery chart.
Open Drone Motor Calculator Calculate drone motor thrust, thrust-to-weight ratio, hover throttle, flight time, and efficiency. Enter KV, propeller size, battery cells, and drone weight.
Open Duty Cycle Calculator Calculate duty cycle from pulse width and period, frequency, or average vs peak power. Includes reverse-solve, average voltage, injector duty cycle, and worked steps.
Open eDPI Calculator Calculate your effective DPI (eDPI) by combining mouse DPI and in-game sensitivity. Compare to pro player ranges for Valorant, CS2, Apex Legends, and more.
Open Floating-Point Calculator (IEEE 754) Convert any decimal number to IEEE 754 floating-point binary (32-bit and 64-bit). See sign, exponent, mantissa bits, hex, stored value, and precision error instantly.
Open GSD Calculator - Ground Sample Distance Calculate ground sample distance (GSD) in cm/pixel from drone camera specs and altitude. Get image footprint, coverage area, and required altitude for a target GSD.
Open Hamming Code Calculator Free Hamming code calculator: encode binary data, detect and correct single-bit errors, and view the syndrome and parity bit layout for (7,4) through (255,247) codes.
Open Hamming Distance Calculator Calculate the Hamming distance between two binary strings, text strings, or hex values. Shows differing positions, similarity %, and error-detection capacity.
Open Impedance Matching Calculator: L, Pi, and T Networks Calculate L-match, Pi-match, and T-match impedance network component values (inductance in nH, capacitance in pF) for any source and load impedance at any frequency.
Open KB to MB Converter Convert kilobytes to megabytes instantly. Supports both the binary standard (1 MB = 1,024 KB) and the SI standard (1 MB = 1,000 KB). Reverse conversion included.
Open LM317 Voltage Regulator Calculator LM317 calculator: find output voltage from R1 and R2, solve for R2, or use current-limiter mode. Includes power dissipation and heatsink guidance.
Open Logic Gate Calculator Logic gate calculator for AND, OR, NOT, NAND, NOR, XOR, and XNOR. Enter two binary inputs to get the output, truth table, and step-by-step logic for each gate.
Open MB to GB Converter Convert megabytes to gigabytes instantly. Supports binary (1024) and SI decimal (1000) standards. Shows KB, MB, GB, and TB outputs with step-by-step math.
Open Mbps Calculator Calculate download or upload time from file size and Mbps speed. Reverse-solve required bandwidth or file size. Instant unit conversion from Kbps to Gbps.
Open Mbps to Gbps Converter Convert Mbps to Gbps (and back) instantly. Get Gbps, GBps, and MBps outputs together with the formula, real-world speed context, and a full reference table.
Open Op-Amp Gain Calculator Calculate op-amp voltage gain, gain in dB, output voltage, and input impedance for inverting, non-inverting, and difference amplifier configurations instantly.
Open Parity Bit Calculator Calculate the parity bit for any binary, hex, or decimal data. Supports even, odd, mark, and space parity in generate and check modes. Instant step-by-step results.
Open Password Entropy Calculator Calculate password entropy in bits, see your strength rating, and get estimated crack times for online, offline fast, and distributed attacks. Results update instantly.
Open PCB Impedance Calculator Calculate PCB trace impedance for microstrip, stripline, and differential pairs. Get Z0, effective Er, propagation delay, capacitance, and inductance instantly.
Open PCB Trace Current Calculator: Max Current, Width and Temp Rise Calculate PCB trace maximum current, required width, or temperature rise using IPC-2221. Also computes resistance, voltage drop, and power dissipation instantly.
Open PCB Trace Resistance Calculator Calculate PCB trace resistance, voltage drop, and power loss. Supports copper, silver, gold, and aluminum with temperature correction and standard copper weights.
Open PCB Trace Width Calculator Calculate minimum PCB trace width for any current, temperature rise, and copper weight using IPC-2221. Shows resistance, voltage drop, and power loss instantly.
Open Pi Attenuator Calculator Calculate Pi attenuator resistor values (R1, R2, R3) for any attenuation and impedance. Includes VSWR, return loss, minimum attenuation, and show-your-work steps.
Open Propagation Delay Calculator Calculate propagation delay for any cable, fiber, or PCB trace. Enter distance and medium, get delay in ns, µs, and ms with a full worked breakdown.
Open RAID Calculator Calculate RAID array usable capacity, fault tolerance, disk efficiency, read/write speed, and cost per TB across RAID 0, 1, 5, 6, 10, 50, 60 and RAID 1E configurations.
Open RAM Latency Calculator Convert RAM CAS latency (CL) to real nanoseconds. Enter data rate and timings to find true memory latency, tRCD, tRP, tRAS, and peak bandwidth instantly.
Open RF Unit Converter Convert RF power between dBm, dBW, watts, milliwatts, and microwatts, plus derive voltage RMS and peak for 50- or 75-ohm systems. Instant results with formulas shown.
Open Total Harmonic Distortion (THD) Calculator Calculate THD from individual harmonic amplitudes or from total RMS. Get results in percent and dB with harmonic spectrum and IEEE 519 compliance context.
Open Unix Time Converter Convert Unix timestamps (seconds, ms, us, ns) to readable dates and back. Supports UTC and local time, ISO 8601, ISO week, day-of-year, and epoch breakdown.
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