Every financial decision involves percentages. Using a percentage calculator money tool allows you to make informed purchases, budget accurately, and prevent overpaying.
Everyday Money Math Fundamentals
To find any percentage of an amount of money, convert the percentage into hundredths (divide by 100) and multiply by the monetary sum.
Calculate Dollar Percentages Instantly
Test sales tax, discounts, or loan percentages on our free online tool.
Calculating Restaurant Gratuities
Common gratuity rates and mental calculation shortcuts:
- 15% Tip: Find 10% (move decimal left once) and add half of that amount. On $80: $8 + $4 = $12.
- 18% Tip: Multiply bill by 0.18 ($80 × 0.18 = $14.40).
- 20% Tip: Find 10% and double it ($8 × 2 = $16.00).
Retail Sale & Clearance Discounts
When an item is 25% off, you pay 75% of the sticker price. Multiply by 0.75 directly for instant checkout verification.