Free Math Tools
Free online math tools from ToolZone. Unit Converter, Age Calculator, Percentage Calculator, Discount Calculator and more. No signup. Every tool runs directly in your browser and is built for quick, repeat use.
5 Math tools
Convert between units of length, weight, temperature and speed. Free online unit converter with instant results. Metric ↔ Imperial.
Math Age CalculatorCalculate your exact age in years, months, days, hours and minutes from your date of birth. Free online age calculator, instant.
Math Percentage CalculatorCalculate percentages online: what is X% of Y, percentage increase, and percentage decrease. Free instant percentage calculator.
Math Discount CalculatorCalculate sale price after a discount, how much you save, and final price with optional tax. Free online discount calculator.
Math Tip CalculatorCalculate restaurant tips, total bill, and amount per person. Free tip calculator for splitting checks quickly.
Related guides
Calculate sale price after a discount, amount saved, and final checkout price with optional tax using a simple discount formula.
Unit Conversion FormulasConvert length, weight, temperature and speed with common metric and imperial formulas, including Celsius to Fahrenheit and km/h to mph.
Percentage Calculator FormulasLearn the simple formulas for X% of Y, percentage increase, percentage decrease, and reverse percentages, with quick examples.
Tip Calculator GuideCalculate a restaurant tip, total bill, and per-person split using a simple tip formula for groups.