Online Calculators

Use this basic calculator online with an extensive collection of calculators on math, finance, fitness, and more.

16 tools

Calculate exact age in years, months, days; time between dates; n...

Percentage Calculator

Five percentage tools: X% of Y, X is what % of Y, X is Y% of what...

Sales Tax Calculator

Margin Calculator

Profit margin, stock trading margin, and forex margin with cost,...

Paypal Fee Calculator

Discount Calculator

Calculate discount from percentage, reverse from final price, or...

Loan Calculator

EMI, total interest, extra payments, amortization schedule, and y...

Stripe Fee Calculator

Calorie Calculator

Estimate daily calorie needs using Mifflin-St Jeor with activity...

TDEE Calculator

Total Daily Energy Expenditure with activity level, BMR-based, fo...

Website Value Calculator

Estimate website worth based on traffic ranking, ad revenue poten...

Bitcoin Calculator

Compound Interest Calculator

Compound interest with optional contributions, multiple frequenci...

Salary Calculator

Convert salary across pay periods, estimate taxes, overtime, bonu...

Simple and advanced ROI with net profit, annualized return, payba...

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