Home/Other Calculators & Tools

🛠️ Other Calculators & Tools

37 free calculators across electronics, transport, weather, internet utilities, and everyday tools.

⚡ Electronics

Electricity Cost Calculator

Calculate electricity cost per day/month using Australian kWh rates.

Ohm's Law Calculator

Voltage, current, resistance, and power — solve any unknown.

Resistor Colour Code

Decode resistor colour bands to resistance value.

Voltage Drop Calculator

Voltage drop along cable runs for electrical installations.

🌐 Internet & Tech

Password Generator

Generate strong, random passwords with custom length and character sets.

Bandwidth Calculator

Calculate download/upload times for files at different speeds.

IP Subnet Calculator

CIDR subnet mask, network address, and host range calculator.

Base64 Encoder/Decoder

Encode and decode Base64 strings online.

URL Encoder/Decoder

Encode special characters for URLs or decode encoded URLs.

🚗 Transport

Fuel Cost Calculator

Calculate trip fuel cost based on distance and L/100km fuel use.

Fuel Efficiency (L/100km)

Calculate fuel consumption from distance and litres used.

Mileage Calculator

Distance-based vehicle running cost and ATO cents-per-km.

Engine Horsepower / kW

Convert between HP and kW and estimate engine power output.

Horsepower Calculator

Calculate horsepower from torque and RPM.

Tyre Size Calculator

Compare tyre sizes and calculate diameter and speedometer error.

🌤️ Weather

Heat Index Calculator

Feels-like temperature from air temp and humidity (Celsius).

Wind Chill Calculator

Apparent temperature with wind speed factor.

Dew Point Calculator

Dew point temperature from air temperature and relative humidity.

🔧 Everyday Utilities

Calculate tip amount and split bill between people.

Sleep Calculator

Best bedtimes and wake times based on 90-min sleep cycles.

Calculate GPA from Australian WAM/grades or US letter grades.

Grade Calculator

Calculate weighted grade average from assignment scores.

Golf Handicap Calculator

Calculate Golf Australia handicap index from recent scores.

Shoe Size Converter

Convert between AU, US, UK, and EU shoe sizes.

Bra Size Calculator

Australian bra size from bust and underbust measurements.

Unit Conversion

Convert length, weight, temperature, volume, speed, and more.

Roman Numeral Converter

Convert between Arabic and Roman numerals.

🎮 Entertainment

Roll any number of dice (d4, d6, d8, d10, d12, d20, d100).

Love Calculator

Fun compatibility percentage calculator from two names.