Free Online Tools
Password generators, game nickname creators, electronics calculators and more — fast, free, and private.
Generators
Password Generator
Generate secure, random passwords with customizable options
Try Now →Game Nickname Generator
Create unique gaming names with multiple styles and themes
Try Now →Product Name Generator
Generate creative product, brand, and startup names
Try Now →Team Name Generator
Generate team names for esports, startups, hackathons, and more
Try Now →WiFi Name Generator
Generate funny and creative WiFi network names
Try Now →Menu Board Designer
Design and download professional menu boards as PNG images
Try Now →Cron Expression Builder
Build cron expressions with visual calendar preview
Try Now →JSON Formatter & Validator
Format, validate, and explore JSON data
Try Now →QR Code Generator
Generate customizable QR codes for any data
Try Now →Regex Tester
Test and debug regular expressions in real time
Try Now →Diff Checker
Compare text and code side by side
Try Now →CSS Gradient Generator
Create CSS gradients with live preview
Try Now →Image Compressor
Compress and optimize images online
Try Now →Image Format Converter
Convert, resize, rotate and filter images between 7 formats directly in your browser
Try Now →Base64 Encoder / Decoder
Encode and decode text and files with Base64
Try Now →URL Encoder / Decoder
Encode and decode URLs with percent-encoding
Try Now →Hash Generator
Generate MD5, SHA-256, SHA-512 hashes from text and files
Try Now →JWT Decoder
Decode and verify JSON Web Tokens
Try Now →Box Shadow Generator
Create CSS box shadows visually
Try Now →Favicon Generator
Create favicons from text, emoji, or images
Try Now →SVG Path Editor
Edit, visualize, and build SVG paths interactively
Try Now →Invoice Generator
Create and download professional invoices as PDF
Try Now →YouTube Channel Name Generator
Generate niche-specific YouTube channel names
Try Now →Pixel Art Editor
Create pixel art with layers, animation, palettes & export
Try Now →Color Palette Generator
Generate harmonious color palettes with shades & export
Try Now →Markdown Editor
Write Markdown with live preview & export as HTML
Try Now →Flashcard & Quiz Maker
Create flashcards & quizzes for effective studying
Try Now →Lorem Ipsum Generator
Generate placeholder text for design and development
Try Now →AI Prompt Generator
Generate effective prompts for AI platforms
Try Now →Restriction Enzyme Mapper
Find restriction sites and predict fragment sizes
Try Now →Meta Tag Generator
Generate SEO-optimized HTML meta tags
Try Now →Slug Generator
Generate SEO-friendly URL slugs from text
Try Now →Social Media Image Resizer
Resize images for social media platforms
Try Now →Open Graph Preview
Preview social media share appearance
Try Now →Word Frequency Counter
Count word frequency and analyze text
Try Now →Readability Analyzer
Analyze text readability and grade level
Try Now →Case Converter
Convert text between different letter cases
Try Now →YouTube Thumbnail Preview
Preview YouTube thumbnails in realistic views
Try Now →Email Signature Generator
Create professional HTML email signatures
Try Now →Color from Image Extractor
Extract color palettes from images
Try Now →Calculators
Resistor Color Code Calculator
Decode resistor color bands to find resistance values
Try Now →Battery Life Calculator
Estimate how long your battery will last based on capacity and current draw
Try Now →LED Resistor Calculator
Calculate the right resistor for any LED circuit
Try Now →Power Consumption Calculator
Calculate electricity consumption and cost for your devices
Try Now →Baud Rate Calculator
Calculate baud rate, clock speed, and serial communication parameters
Try Now →Voltage Divider Calculator
Calculate voltage divider output and find optimal resistor pairs
Try Now →Ohm's Law Calculator
Calculate voltage, current, resistance, and power from any two known values
Try Now →PCB Trace Width Calculator
Calculate required PCB trace width for a given current using IPC-2221 standard
Try Now →Resistor Derating Calculator
Calculate derated power and voltage for resistors per aerospace and military standards
Try Now →Capacitor Code Calculator
Decode 3-digit ceramic capacitor codes and convert between pF, nF, and µF
Try Now →RC Filter Calculator
Calculate RC time constant, charge/discharge voltage, and filter cutoff frequency with Bode plot
Try Now →Resonant Frequency Calculator
Calculate resonant frequency, Q factor, and bandwidth for RLC circuits
Try Now →Three-Phase Power Calculator
Calculate three-phase power, current, and voltage for Star and Delta configurations
Try Now →Transformer Calculator
Calculate transformer turns ratio, voltage, and current for step-up and step-down configurations
Try Now →Motor Sizing Calculator
Size motors, look up NEC full-load amps, and calculate motor starter sizing
Try Now →Power Factor Correction Calculator
Calculate capacitor kVAR to improve power factor and reduce penalties
Try Now →Cable Sizing Calculator
Size cables with NEC ampacity tables and voltage drop calculation
Try Now →Wire Gauge Calculator
Calculate wire size, voltage drop, and convert between AWG, metric, SWG, JIS, BWG, and MWG
Try Now →KEC Cable Sizing Calculator
Calculate cable size per Korean Electrical Code (KEC/IEC 60364)
Try Now →Food Cost Calculator
Calculate recipe cost, food yield, and menu pricing
Try Now →Dilution Calculator
Calculate solution dilutions with C1V1=C2V2
Try Now →Molarity Calculator
Calculate molar concentration and convert units
Try Now →Buffer Recipe Calculator
Calculate buffer recipes for target pH
Try Now →Primer Tm Calculator
Calculate primer melting temperature (Tm)
Try Now →Discount & Markup Calculator
Calculate discounts, markups, and profit margins
Try Now →Electronic Component Decoder
Decode resistor, capacitor, inductor & SMD codes
Try Now →Hiking Planner
Plan hydration, food, gear, and altitude for hiking
Try Now →Emergency Preparedness Calculator
Calculate emergency water, food, supplies, and budget for your household
Try Now →Tire Size Calculator
Calculate and compare tire sizes with visual diagrams
Try Now →BMI & BMR Calculator
Calculate BMI, BMR, and ideal weight
Try Now →Unit Converter
Convert units across 8 categories
Try Now →Loan & Mortgage Calculator
Calculate loan payments and amortization schedules
Try Now →Color Converter
Convert between color formats with visual preview
Try Now →Pet Age Converter
Convert pet age to human equivalent years
Try Now →Motor & Gearbox Sizing Calculator
Calculate motor torque, gearbox ratio, and inertia for robotics
Try Now →NPU Performance Calculator
Calculate NPU performance metrics: TOPS, inference time, and power efficiency
Try Now →MCU Timer / Prescaler Calculator
Calculate timer frequency, PWM settings, and prescaler values for popular MCUs
Try Now →Motor Winding Calculator
Calculate motor winding turns, RPM, and wire selection
Try Now →Roblox BrickColor Converter
Convert Roblox BrickColor, Color3, RGB, Hex, HSV
Try Now →Roblox DevEx Calculator
Calculate DevEx payouts, Robux to USD conversion
Try Now →Roblox CFrame Visualizer
Visualize CFrame rotation and position in 3D
Try Now →Timestamp Converter
Convert between Unix timestamps & human-readable dates
Try Now →Text & Word Counter
Count words, characters, sentences & analyze text
Try Now →Pomodoro Timer
Boost focus with customizable Pomodoro work/break cycles
Try Now →Typing Speed Test
Test typing speed with WPM tracking & accuracy analysis
Try Now →Salary & Tax Calculator
Calculate net pay from gross salary with taxes & deductions
Try Now →Percentage Calculator
Calculate percentages, tips, and percentage changes
Try Now →Molecular Weight Calculator
Calculate molecular weight from chemical formulas
Try Now →DNA Sequence Translator
Translate DNA to protein, complement, and mRNA
Try Now →Cell Culture Calculator
Calculate cell density, dilution, and seeding
Try Now →Beer-Lambert Calculator
Calculate absorbance and concentration with A = εlc
Try Now →qPCR Calculator
Analyze qPCR data with ΔΔCt method
Try Now →Protein Properties Calculator
Calculate MW, pI, extinction coefficient from sequence
Try Now →ELISA Data Analyzer
4PL curve fitting for ELISA standard curves
Try Now →Solution Prep Calculator
Calculate mass, dilution, and molarity for solutions
Try Now →Cell Viability Analyzer
IC50/EC50 dose-response curve fitting
Try Now →Rocket Equation Calculator
Calculate delta-V and mass ratios with Tsiolkovsky's equation
Try Now →Orbital Mechanics Calculator
Calculate orbital velocity, Hohmann transfers, and escape velocity
Try Now →Thrust-to-Weight Ratio Calculator
Calculate TWR with engine presets and planetary gravity comparison
Try Now →Atmospheric Re-entry Calculator
Calculate re-entry heating, G-forces, and ballistic coefficient
Try Now →Specific Impulse Converter
Convert Isp, exhaust velocity, and compare propellant performance
Try Now →Solar Panel Energy Calculator
Calculate solar panel energy output and CO₂ savings
Try Now →Battery Pack Designer
Design battery packs with series/parallel configuration
Try Now →Wind Energy Calculator
Calculate wind turbine power output and annual energy
Try Now →Heat Exchanger Calculator
Calculate heat exchanger LMTD, area, and effectiveness
Try Now →Energy Unit Converter
Convert between joules, kWh, BTU, calories, and more
Try Now →Hydropower Energy Calculator
Calculate hydroelectric power from head and flow rate
Try Now →Magnetic Field Calculator
Calculate magnetic field strength for various geometries
Try Now →Inductance Calculator
Calculate coil inductance for various geometries
Try Now →Electromagnetic Force Calculator
Calculate electromagnetic force and torque
Try Now →Solenoid Force Calculator
Calculate electromagnet and solenoid actuator force
Try Now →Magnetic Circuit Calculator
Calculate magnetic circuit reluctance and flux
Try Now →Pipe Sizing Calculator
Calculate pipe size, flow velocity, and pressure drop
Try Now →HVAC Duct Sizing Calculator
Calculate room CFM and duct sizes for HVAC systems
Try Now →Refrigerant Charge Calculator
Calculate superheat and subcooling with P-T charts
Try Now →Bolt Torque Calculator
Calculate bolt torque specs with flange pattern visualization
Try Now →Pipe Thermal Expansion Calculator
Calculate pipe expansion and expansion loop dimensions
Try Now →Belt & Pulley Calculator
Calculate belt length, speed ratio, and pulley geometry
Try Now →Thread Pitch Identifier
Identify and compare NPT, BSP, UN, and Metric threads
Try Now →Pump Head Calculator (TDH)
Calculate total dynamic head and pump power requirements
Try Now →Expansion Tank Sizing Calculator
Size expansion tanks for hydronic heating and cooling systems
Try Now →Hydraulic Cylinder Force Calculator
Calculate hydraulic cylinder force, speed, and flow requirements
Try Now →Soil Volume Calculator
Calculate how much soil, mulch, or compost you need
Try Now →NPK Fertilizer Calculator
Calculate fertilizer application rates from NPK ratios
Try Now →Seed Spacing Calculator
Calculate seed spacing and garden bed layout for 27+ crops
Try Now →Mulch Calculator
Calculate how much mulch you need for your garden
Try Now →Compost Calculator
Calculate C:N ratio and composting time from ingredients
Try Now →Irrigation Drip Calculator
Calculate drip irrigation water usage and runtime
Try Now →Plant Spacing Calculator
Plan garden layouts with optimal plant spacing
Try Now →Raised Bed Soil Calculator
Calculate soil mix volume for raised garden beds
Try Now →Grow Light Calculator
Calculate grow light requirements for indoor plants
Try Now →Fertilizer Cost Calculator
Compare fertilizer products by cost per nutrient
Try Now →Buck / Boost Converter Calculator
DC-DC converter duty cycle, inductor & capacitor sizing
Try Now →Parasitic Capacitance Calculator
Calculate PCB parasitic capacitance for 5 geometries
Try Now →