tools available
Free Everyday Tools
Use everyday tools when you need a fast answer for an ordinary task: a quick estimate, a generated value, a small comparison, or a copy-ready result. The tools keep the workflow simple and show the checks that matter before you rely on the output.
Browse and filter everyday toolsAll everyday tools
Choose a tool for your task. Open its matching guide when you need the inputs or results explained.
Random Number GeneratorGenerate random numbers in a custom range, with unique, sorted, and copied results.Dice RollerRoll one or more virtual dice with custom sides and a modifier.Four in a Row GamePlay a local four-in-a-row strategy game against a friend or the computer.Fuel Cost CalculatorEstimate fuel cost from distance, MPG, fuel price, and round-trip setting.Gas Mileage CalculatorWork out MPG from a real fill-up, plus gallons per 100 miles and L/100 km.Tip CalculatorCalculate tip, tax, total bill, and per-person split.
Browse all 23 everyday tools
The 6 choices above and these 17 tools make up this category.
- Mileage Reimbursement CalculatorEstimate mileage reimbursement from miles, rate per mile, parking, tolls, and extras.
- Bra Size CalculatorEstimate a starting bra band and cup size from bust and underbust measurements.
- BTU CalculatorEstimate room air conditioner BTU/h from room size, ceiling height, sun, people, and kitchen heat.
- Electricity CalculatorEstimate electricity use and cost from watts, hours, days, and rate per kWh.
- Tire Size CalculatorCalculate tire diameter, sidewall height, circumference, and revs per mile from a metric tire size.
- Wind Chill CalculatorCalculate wind chill from Fahrenheit temperature and wind speed using the NWS formula.
- Heat Index CalculatorCalculate heat index from Fahrenheit temperature and relative humidity.
- Dew Point CalculatorCalculate dew point from Fahrenheit temperature and relative humidity.
- Engine Horsepower CalculatorCalculate horsepower, torque, or RPM from two known values, or estimate engine and wheel horsepower.
- Golf Handicap CalculatorEstimate score differential, course handicap, and playing handicap from the numbers on your scorecard.
- Love CalculatorTry a playful love percentage with two names or with names and birthdays.
- Device Battery Life CalculatorBattery runtime from mAh and average mA, or mAh, volts, and watts.
- Recipe ScalerScale one recipe ingredient from original servings to the servings you want to make.
- Ingredient Cost CalculatorEstimate how much one recipe ingredient costs from package price and amount used.
- Unit Price CalculatorCompare two products by price per shared unit so the cheaper package is clearer.
- Cost Per Serving CalculatorSplit a recipe, meal prep, or food batch cost across the number of servings.
- Baking Pan Conversion CalculatorCompare rectangular baking pan areas and estimate how much to scale a recipe.
Help choosing a tool and checking its results
guides available
No signup needed
What this category helps with
- Small browser utilities for everyday decisions, random picks, and quick personal tasks.
- Private in-browser workflows that avoid signup and keep simple answers easy to copy.
- A growing place for practical tools that do not fit a strict math category.
Guides for this category
Each guide uses its matching tool, with example numbers and plain limits.
- How to use the Random Number GeneratorLearn how to pick one random number, generate lists, use unique results, exclude numbers, sort results, copy answers, and understand everyday-use limits.
- How to use the Dice RollerLearn how to use the Dice Roller for 2d6, d20, percentile, and custom dice rolls. See what dice count, sides, modifiers, subtotals, and casual randomness limits mean.
- How to Play Four in a Row OnlineLearn how to play Four in a Row online, read the 7 by 6 board, block immediate wins, use center columns, undo moves, and practise against the computer.
- Fuel Cost Calculator GuideLearn how miles, MPG, and pump price turn into gallons, trip fuel cost, and cost per mile. Includes input tips, examples, result checks, and unit or mode no...
- How to use the Gas Mileage CalculatorCalculate MPG from miles and gallons with a 350-mile, 12.5-gallon example. Compare gallons per 100 miles, L/100 km, and one-tank limits.
- How to use the Tip CalculatorLearn how to calculate a tip, optional tax, total bill, and split amount. Includes input tips, examples, result checks, and unit or mode notes for the Tip C...
Browse all 23 guides in this category
- Mileage Reimbursement Calculator GuideUse the Mileage Reimbursement Calculator with a 125-mile example. Check the July 2026 IRS/GSA rate change, extras, and total.
- How to use the Bra Size CalculatorUse the Bra Size Calculator guide to measure underbust and bust inches, read band and cup estimates, check sister sizes, and avoid over-trusting one fit label.
- BTU Calculator GuideUse the BTU Calculator guide to estimate room air conditioner BTU/h from square feet, ceiling height, sunlight, people, kitchen heat, and practical sizing limits.
- How to use the Electricity CalculatorUse the Electricity Calculator guide to estimate appliance kWh and cost from watts, hours, days, and price per kWh, with heater, bulb, PC, and AC examples.
- Tire Size Calculator GuideUse the Tire Size Calculator guide with a 225/60R16 example. Learn sidewall height, diameter, circumference, revs per mile, and fitment cautions.
- How to use the Wind Chill CalculatorLearn how to use the Wind Chill Calculator with Fahrenheit temperature, mph wind speed, NWS formula limits, examples, and cold-weather cautions.
- How to use the Heat Index CalculatorLearn how temperature and humidity estimate apparent heat, with safety limits in plain language. Includes input tips, examples, result checks, and unit or m...
- How to use the Dew Point CalculatorUse the Dew Point Calculator guide to estimate dew point from Fahrenheit temperature and relative humidity, read comfort examples, and understand weather limits.
- How To Calculate Horsepower, Torque, RPM And WHPCalculate horsepower, torque, RPM, engine HP, and wheel HP with lb-ft or N m examples. Learn why horsepower cannot convert directly to km/h.
- How to use the Golf Handicap CalculatorUse the Golf Handicap Calculator with scorecard examples for score differential, course handicap, and playing handicap. Clear WHS-style formulas and limits.
- Love Calculator by Name or BirthdayUse the Love Calculator by name or birthday. See repeatable examples, private browser inputs, and why every percentage is entertainment only.
- Battery Runtime From mAh, mA, or WattsLearn how to estimate battery runtime from mAh and average mA, or from mAh, voltage, and watts, with worked examples and real-world limits.
- Recipe Scaler GuideUse the Recipe Scaler guide to resize ingredient amounts, read the scale factor, and avoid common serving-size rounding mistakes.
- Ingredient Cost Calculator GuideCalculate ingredient cost from package price, recipe amount, unit conversion, density, and real-world limits.
- Unit Price Calculator GuideLearn how to compare price per ounce, pound, roll, count, sheet, or other shared unit before choosing a package.
- Cost Per Serving Calculator GuideLearn how to divide a recipe, meal prep batch, or bake sale cost by servings. Includes the formula, examples, extras, and mistakes to avoid.
- How to use the Baking Pan Conversion CalculatorLearn how rectangular pan area can estimate recipe scaling when switching baking pans. Includes input tips, examples, result checks, and unit or mode notes...