Free Online Tools
Free Online Tools & Calculators
Access a powerful collection of free, easy-to-use online tools and calculators. Designed for simplicity and efficiency—no registration required.
Loading tools...
4 Band Resistor Color Code Calculator
Decode the color bands on 4 band axial lead resistors to find their resistance and tolerance.
electronicscalculatorresistor
5 Band Resistor Color Code Calculator
Decode the color bands on 5 band axial lead resistors to find their resistance and tolerance.
electronicscalculatorresistor
6 Band Resistor Color Code Calculator
Decode the color bands on 6 band axial lead resistors to find their resistance and tolerance.
electronicscalculatorresistor
Parallel Resistor Calculator
Calculate the equivalent resistance of multiple resistors in parallel.
electronicscalculatorresistor
Ohms Law Calculator
Calculates the relationship between voltage (V), current (I), resistance (R), and power (P) in a circuit.
electronicscalculatorpowercurrentvoltageresistance
Battery Life Calculator
Estimates how long a battery will last given its capacity and a device's consumption.
electronicscalculatorbatterylifeconsumption
Wire Gauge (AWG) Conversion Calculator
Convert between wire gauge (AWG) and diameter in inches and millimeters.
electronicscalculatorwiregaugediameter
BMX Racing Gear Calculator
A simplified BMX gear calculator tool that instantly computes gear inches or roll-out distance based on chainring, cog size, and tire selection.
bmxcalculatorracinggear
Mortgage Payment Calculator
Calculate your monthly mortgage payment based on the principal (load amount), interest rate, and term length of the loan.
mortgagecalculatorpaymentloan
Compound Interest Calculator
Calculate the future value of an investment with compound interest.
financecalculatorinterestinvestment
String Hash Generator
Generate multiple hash values (MD5, SHA-1, SHA-256, SHA-384, SHA-512, Base64) from any text input.
securityhashencryptionmd5shabase64
Royalty Free SVG Creator
Create custom, royalty-free SVG icons and images by describing what you want. Download and use them in your projects.
designsvgicongraphicsvector
Currency Converter
Convert between different currencies using real-time exchange rates from a reliable API.
financecalculatorcurrencyexchangeconverter
World Sunrise Sunset Map
Click on a world map to see sunrise and sunset times for the upcoming week at any location.
astronomygeographytimemapsun
LED Series Resistor Calculator
Calculate the required series resistor value and power rating for LEDs based on source voltage, forward voltage, and current.
electronicscalculatorledresistor
Voltage Divider Calculator
Calculate output voltage from a voltage divider circuit using two resistors, or solve for resistor values.
electronicscalculatorvoltageresistor
Ceramic Capacitor Decoder
Decode three-digit ceramic capacitor codes to find capacitance values in picoFarads, nanoFarads, and microFarads.
electronicscalculatorcapacitordecoder
Bicycle Chain Length Calculator
Calculate the correct chain length for your bicycle based on chainstay length, chainring size, and cog size.
bicyclecalculatorbmxchain
Tire Pressure Converter
Convert tire pressure between PSI, Bar, and kPa units for optimal vehicle handling and performance.
automotiveconverterpressuretire
Hex to RGB Color Converter
Convert between hexadecimal and RGB color codes with real-time color preview for design and development.
designconvertercolorhexrgb
Aspect Ratio Calculator
Calculate and simplify aspect ratios from width and height dimensions, essential for photography and design.
designcalculatoraspect-ratiophotography
Secure Password Generator
Generate strong, random passwords with customizable length and character types for enhanced security.
securitypasswordgeneratorcrypto
Number Base Converter
Convert numbers between binary, decimal, and hexadecimal bases for programming and electronics work.
programmingconverterbinaryhexadecimaldecimal
QR Code Generator
Generate QR codes instantly from any text or URL. Download as PNG for sharing and printing.
generatorqr-codebarcodeutility