🧮 Calculators & Math Tools

Advanced calculators and mathematical tools for finance, statistics, and everyday calculations. Get accurate results for loans, percentages, discounts, taxes, and more with professional-grade calculators.

12 Calculators

Accurate Results

Instant Computing

Free Always

Professional Calculators & Math Tools

Comprehensive collection of calculators for financial, statistical, and everyday mathematical calculations.

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Percentage Calculator

Calculate percentages, percentage increase/decrease, and find what percentage one number is of another.

Percentage calculations
Increase/decrease analysis
Reverse calculations
Multiple scenarios

Most Used Calculate % →

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Loan Calculator

Calculate loan payments, total interest, and amortization schedules for mortgages and personal loans.

Monthly payment calculation
Amortization schedule
Total interest analysis
Multiple loan types

Essential Calculate Loan →

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Discount Calculator

Calculate discounts, sale prices, and savings amounts for shopping and business pricing.

Discount percentage
Final price calculation
Savings amount
Bulk discounts

Popular Calculate Discount →

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Age Calculator

Calculate exact age in years, months, days, hours, and minutes between two dates.

Precise age calculation
Multiple time units
Date difference
Birthday countdown

Personal Calculate Age →

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Average Calculator

Calculate mean, median, mode, and other statistical averages for sets of numbers.

Mean calculation
Median & mode
Statistical analysis
Data visualization

Statistics Calculate Average →

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Sales Tax Calculator

Calculate sales tax amounts and total prices including tax for various tax rates.

Tax calculation
Pre/post tax amounts
Multiple tax rates
Regional support

Business Calculate Tax →

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Margin Calculator

Calculate profit margins, markup percentages, and pricing strategies for business operations.

Profit margin analysis
Markup calculations
Pricing strategies
Business planning

Business Calculate Margin →

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Probability Calculator

Calculate probabilities for various scenarios including combinations, permutations, and events.

Event probability
Combinations/permutations
Statistical analysis
Multiple scenarios

Statistics Calculate Probability →

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GST Calculator

Calculate GST (Goods and Services Tax) amounts for inclusive and exclusive pricing.

GST inclusive/exclusive
Multiple GST rates
Tax breakdown
Regional compliance

Tax Calculate GST →

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PayPal Fee Calculator

Calculate PayPal transaction fees and net amounts for online payments and transfers.

Transaction fees
Net amount calculation
International transfers
Fee breakdown

Payments Calculate Fees →

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CPM Calculator

Calculate cost per mille (CPM) for advertising campaigns and media buying.

CPM calculation
Campaign budgeting
ROI analysis
Media planning

Marketing Calculate CPM →

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AdSense Calculator

Estimate Google AdSense earnings based on traffic, CTR, and CPC metrics.

Revenue estimation
Traffic analysis
CTR optimization
Earnings projections

Monetization Calculate Earnings →

Financial & Mathematical Best Practices

Master financial calculations and mathematical concepts with these essential tips and formulas.

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Percentage Mastery

Understanding percentage calculations for business, finance, and everyday applications.

• Percentage = (Part / Whole) × 100 • Increase: ((New - Old) / Old) × 100 • Decrease: ((Old - New) / Old) × 100 • Tip: 15% = multiply by 0.15

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Loan Calculations

Essential formulas for understanding loan payments, interest, and amortization.

• Monthly Payment = P[r(1+r)^n]/[(1+r)^n-1] • P = Principal, r = monthly rate, n = payments • Total Interest = (Monthly Payment × n) - P • Compare APR, not just interest rates

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Discount Strategies

Calculate savings and understand pricing psychology for smart shopping and selling.

• Discount Amount = Original Price × Discount % • Sale Price = Original Price - Discount Amount • Stack discounts: Apply sequentially, not additively • Compare unit prices for bulk discounts

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Statistical Analysis

Understanding averages, distributions, and statistical measures for data analysis.

• Mean = Sum of values / Number of values • Median = Middle value when sorted • Mode = Most frequently occurring value • Use appropriate average for your data type

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Tax Calculations

Navigate various tax systems and understand inclusive vs. exclusive tax calculations.

• Tax-Inclusive: Tax = Price × (Rate / (100 + Rate)) • Tax-Exclusive: Tax = Price × (Rate / 100) • Always verify local tax rates and rules • Consider compound taxes where applicable

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Business Metrics

Key performance indicators and calculations for business analysis and planning.

• Profit Margin = (Revenue - Costs) / Revenue • ROI = (Gain - Cost) / Cost × 100 • Break-even = Fixed Costs / (Price - Variable Cost) • Track metrics consistently over time

Frequently Asked Questions

Common questions about calculations, formulas, and mathematical problem-solving.

For percentage increase: ((New Value - Old Value) / Old Value) × 100. For decrease, use the same formula but the result will be negative. Example: if a price goes from $100 to $120, the increase is ((120-100)/100) × 100 = 20%.

Interest rate is the cost of borrowing the principal amount. APR (Annual Percentage Rate) includes the interest rate plus additional fees and costs, giving you the true cost of the loan. Always compare APRs when shopping for loans.

Our calculators use standard financial formulas and provide accurate mathematical results. However, they're for estimation purposes. Always consult with financial professionals for major decisions like mortgages or investments.

Mean is the arithmetic average (sum divided by count). Median is the middle value when data is sorted. Mode is the most frequently occurring value. Use mean for normal distributions, median for skewed data, and mode for categorical data.

Simple interest: Principal × Rate × Time. Compound interest: Principal × (1 + Rate)^Time - Principal. Compound interest grows faster because you earn interest on previously earned interest.

No, PayPal fees vary by country, currency, transaction type, and funding source. Our calculator covers common scenarios, but always check PayPal's current fee schedule for your specific region and transaction type.

Profit margin = (Selling Price - Cost) / Selling Price × 100. Markup = (Selling Price - Cost) / Cost × 100. Margin is percentage of selling price that's profit; markup is percentage added to cost.

These calculators are helpful for estimates and planning, but tax calculations can be complex with many variables. Always use official tax software or consult a tax professional for actual tax filing and compliance.