What is 30% of 10?
30% of 10 is 3. Use the calculator below to change either number, or see related calculations.
Calculating 30% of 10: divide 30 by 100, then multiply by 10. The general formula is (X ÷ 100) × Y — works for any percentage and any number.
Percentages around this level appear in everyday calculations (interest rates, growth, splits). This base value sits in the everyday range — receipts, tips, small purchases.
How it works.
Formula: (X ÷ 100) × Y.
Step by step:
- Divide the percentage by 100: 30 ÷ 100 = 0.3.
- Multiply by the number: 0.3 × 10 = 3.
Worked examples
30% of 10 = 3 — the basic calculation: divide 30 by 100 (= 0.3), then multiply by 10.
30% of 10 as a tip on a small bill — if a service charge of 30% is added to a 10 item, the extra is 3.
30% off a 10-pound item — the discount saves 3; the sale price is £7.
Frequently asked questions
How do I calculate 30% of 10?
Divide 30 by 100, then multiply by 10. 30 ÷ 100 = 0.3; 0.3 × 10 = 3. The same formula works for any pair of numbers.
What is 30 percent of 10?
3. The full calculation: (30 ÷ 100) × 10 = 0.3 × 10 = 3.
What's the formula for any percentage of any number?
Divide the percentage by 100 to convert it to a decimal, then multiply by the number. The general formula is (X ÷ 100) × Y. The percentage calculator above uses this for any pair of values; results display to 4 decimal places.