Percentage Calculator
Calculate percentages, tips, discounts, and tax
What is X% of Y?
Formula: Result = (X / 100) × Y
Result
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X is what % of Y?
Formula: Percentage = (X / Y) × 100
Result
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Percentage Change from X to Y
Formula: Change = ((Y − X) / |X|) × 100
Percentage Change
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Tip Calculator
Calculate tip amount, total, and per-person split
Tip
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Total
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Per Person
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Discount Calculator
Calculate discount amount and final price
You Save
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Final Price
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Tax Calculator
Add or remove tax from an amount
Tax Amount
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Total with Tax
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Markup & Margin Calculator
Markup = (Profit / Cost) × 100 | Margin = (Profit / Price) × 100
Selling Price
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Profit
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Margin %
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Compound Percentage
Apply X% repeatedly N times: Result = Value × (1 + X/100)^N
Final Value
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Total Change
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Fraction ↔ Percentage
Convert between fractions and percentages
Edit the fraction to see the percentage, or edit the percentage to see the fraction.
Calculation History
No calculations yet. Start using any mode above.
How to Use Percentage Calculator
Choose calculation type
Select what percentage calculation you need.
Enter values
Input the numbers for your calculation.
View result
See the percentage result instantly.
Why Choose AllTools Percentage Calculator?
- ✓ 100% free, no account needed
- ✓ No data stored or transmitted
- ✓ Multiple calculation modes
- ✓ Percentage change and difference
- ✓ Instant results
- ✓ Tip calculator with split
- ✓ Discount calculator with presets
- ✓ Tax calculator (add/remove)
- ✓ Markup vs margin calculator
- ✓ Compound percentage
- ✓ Fraction to percentage converter
- ✓ Calculation history
- ✓ Visual percentage bars
Why Use This Tool
- ★ Instant calculations with no server round-trip
- ★ Completely free with no usage limits
- ★ No account or registration required
- ★ Accurate results using standard mathematical formulas
- ★ Works on any device including phones and tablets
Related Resources
Frequently Asked Questions
What can I calculate? ▼
Is this calculator accurate? ▼
Can I calculate percentage change? ▼
Is there a limit on calculations? ▼
Is my data stored? ▼
Does this work on mobile? ▼
How does the tip calculator work? ▼
How does the discount calculator work? ▼
What is the difference between markup and margin? ▼
Can I calculate tax? ▼
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