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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.
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.
Start with these tools
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.
All everyday tools
Open a tool, try the examples, then use the matching guide when you need more explanation.
Guides for this category
Each guide uses its matching tool, with example numbers and plain limits.
How to use the Random Number Generator
Learn how to pick one random number, generate lists, use unique results, exclude numbers, sort results, copy answers, and understand everyday-use limits.
Read Random number generator guideHow to use the Dice Roller
Learn 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.
Read Dice Roller guideHow to Play Four in a Row Online
Learn 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.
Read Four in a Row Game guideFuel Cost Calculator Guide
Learn 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...
Read Fuel Cost Calculator guideHow to use the Gas Mileage Calculator
Calculate 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.
Read Gas Mileage Calculator guideHow to use the Tip Calculator
Learn 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...
Read Tip Calculator guideHow to use the Mileage Calculator
Use the Mileage Calculator with a 125-mile, $0.725-per-mile example. See mileage-only amount, extras, total, and 2026 IRS/GSA rate context.
Read Mileage Calculator guideHow to use the Bra Size Calculator
Use 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.
Read Bra Size Calculator guideBTU Calculator Guide
Use the BTU Calculator guide to estimate room air conditioner BTU/h from square feet, ceiling height, sunlight, people, kitchen heat, and practical sizing limits.
Read BTU Calculator guide