Everyday & Random
Passwords, pickers, dice and more. These tools are free, need no account, and come with simple step-by-step instructions.
- Password GeneratorStrong random passwords or memorable passphrases, made in your browser.
- Random Name PickerPick random winners from a list: raffles, giveaways, who goes first.
- Coin Flip & Dice RollerFlip coins or roll any dice (d4 to d100).
- Random Team GeneratorSplit a list of people into fair random teams.
- Electricity Cost CalculatorEstimate appliance energy use and cost from watts, hours and your rate.
- Concrete Volume CalculatorEstimate concrete for a rectangular slab, with waste allowance.
- Paint Coverage CalculatorEstimate paint for wall area, openings and multiple coats.
- Tile Quantity CalculatorCalculate whole tiles for a floor area and waste allowance.
- Wallpaper Roll CalculatorEstimate rolls using strip height, wall length and roll size.
- Flooring Cost CalculatorEstimate flooring material and installation costs.
- Gravel CalculatorEstimate loose gravel volume and mass.
- Solar Energy Estimate CalculatorEstimate daily generation from panel capacity and sun hours.
- Battery Runtime CalculatorEstimate runtime from voltage, amp-hours and usable capacity.
- Download Time CalculatorEstimate transfer duration from file size and connection speed.
- Recipe Scaling CalculatorScale an ingredient from original to desired servings.
- International Shoe Size Conversion ChartConvert shoe sizes between US, UK, European (EU), and Japanese (CM) standards.
- International Apparel & Clothing Size ConverterConvert women’s and men’s dress and shirt sizes across US, UK, and EU.
- Ring Size & Finger Circumference ConverterConvert finger circumference or diameter into US, UK, and EU ring sizes.
- Bra Band & Cup Size CalculatorCalculate bra band and cup dimensions from ribcage and bust measurements.
- Drywall Sheet & Joint Compound EstimatorEstimate 4x8 ft plasterboard sheets and joint compound for room walls.
- Baking Yeast Ratio & Quantity ConverterConvert quantities between Active Dry, Instant, and Fresh Cake Yeast.
- Coffee Brewing Water-to-Coffee Ratio CalculatorCalculate exact coffee ground doses and water weights for artisan coffee.
- Swimming Pool Water Capacity CalculatorCalculate total gallons and liters of water in rectangular or round pools.
- Lawn Fertilizer & Nitrogen Application CalculatorCalculate bags of fertilizer needed based on lawn area and NPK analysis.
- Air Conditioner Sizing (BTU & Horsepower) CalculatorCalculate cooling BTU and Aircon Horsepower (HP) for room dimensions.
- Candle Making Wax & Fragrance CalculatorCalculate wax flakes and fragrance oil weights in grams for candle batches.
- Screen PPI & Display Pixel Density CalculatorCalculate Pixels Per Inch (PPI), total resolution, and aspect ratio of screens.
- HVAC Air Duct Sizing CalculatorCalculate round duct diameter and rectangular size for airflow CFM.
- Welding Heat Input Calculator (ASME / AWS)Calculate arc welding heat energy input in kJ/mm from volts, amps and speed.
- Torque Unit Converter CalculatorConvert torque values between Newton-meters, foot-pounds, and inch-pounds.