Everyday Calculators

Free practical calculators for common percentage questions involving prices, tips, taxes, grades, sales, business metrics, and more.

Practical percentage tools

Use these tools to solve real-world math questions quickly. Each calculator is designed around a specific everyday task rather than a general formula.

Sales Tax Calculator Add sales tax to a price or find the pre-tax amount. Tip Calculator Calculate a tip and split a restaurant bill. Discount Calculator Find savings and the final price after a discount. Grade Calculator Calculate a grade percentage from earned and possible points. Commission Calculator Calculate commission from a rate and total sales. Conversion Rate Calculator Calculate conversions as a percentage of visitors or leads.

Percentages in everyday life

Percentages help compare part of a whole, measure a change over time, and calculate adjustments to an amount. Common examples include sales discounts, restaurant tips, grades, taxes, commissions, and conversion rates.

Example: A 20% discount on a $50 item saves $10, leaving a final price of $40 before any sales tax.