Percentage Calculator
Free Online Percentage Calculator - Instant Percent Computation
Calculate percentages quickly and easily. Supports "What is X% of Y?", "X is what % of Y?", and "% change from X to Y" modes.
💡 What is Percentage?
Percentage comes from Latin "per centum" meaning "per hundred." It represents a ratio as a fraction of 100 and is widely used in daily life for discounts, interest rates, taxes, statistics, and more.
Result
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📝 How to Use
- Select a calculation mode (one of three)
- Enter two values
- Results are calculated instantly as you type
- View the formula used for the calculation
🔧 Percentage Tips
- Discounts: Find X% of price and subtract
- Interest: Principal x Rate(%) = Interest
- Growth rate: Useful for sales, population changes
- Proportions: Understand part-to-whole ratios
- Tipping: 10-20% of the meal cost
📚 Local Method & Assumption Guide
Formula Logic
Core formulas use public finance, loan, ratio, and unit conversion standards.
Source Scope
References follow publicly available standards and country-level common practices.
Assumptions
Taxes, fees, rates, and limits vary by region and institution.
Result Interpretation
Use this result as a baseline scenario. For decisions, compare with your lender quote and local tax treatment.
Locale Preset
Currency: USD
Units: imperial
Tax logic: US payroll estimate
Regulatory Note
This tool uses regional presets for estimation. Contract terms and legal limits may differ by lender, bank, or local law.
Recommended Next Actions
- Compare at least 2-3 local providers before final submission.
- Re-check fees, tax treatment, and prepayment clauses in writing.
- Run a stress scenario with +1-2% interest and lower income.
Before a real financial decision, confirm with local institution rules.