Math & Financial Calculators
Fast, accurate calculators for mortgage loans, monthly EMIs, compound interest, percentages, discounts, and BMI.
Age Calculator
Calculate your exact age in years, months, and days.
Percentage Calculator
Easily calculate percentages, such as finding X% of Y or figuring out what % X is of Y.
Discount Calculator
Calculate the final price and total savings after a percentage discount is applied.
BMI Calculator
Calculate your Body Mass Index (BMI) using metric or imperial units.
EMI Calculator
Calculate Equated Monthly Installments (EMI) for home loans, car loans, or personal loans.
GST Calculator
Add or remove Goods and Services Tax (GST) from a price instantly.
Loan Calculator
Estimate monthly payments and total interest for any type of loan.
Date Difference Calculator
Calculate the exact number of days, months, and years between two calendar dates.
Gross Profit Margin Calculator
Calculate gross profit margin, markup percentage, and total profit from cost of goods sold (COGS) and sale price.
Return on Investment (ROI) Calculator
Calculate net return on investment (ROI) percentage, net profit/loss, and 1-year / 5-year annualized ROI.
PayPal Merchant Fee Calculator
Calculate exact PayPal merchant fees for domestic and international transactions, including reverse calculations to know how much to invoice.
Stripe Fee Calculator
Calculate Stripe credit card processing fees for domestic (2.9% + $0.30) and international (4.4% + $0.30) payments with instant reverse invoicing math.
Advanced Mortgage Calculator
Calculate your exact monthly mortgage payment including property taxes, HOA fees, and home insurance.
Cloud Infrastructure Cost Estimator
Estimate and compare monthly cloud infrastructure costs across AWS (EC2), Azure, and GCP including compute instances, block storage, and data egress.
Crypto Profit & Tax Calculator
Instantly calculate your net profit and capital gains tax from cryptocurrency trades.
Freelance Hourly Rate Calculator
Calculate your required freelance hourly rate based on target annual salary, business overhead expenses, vacation weeks, and billable utilization percentage.
Frequently Asked Questions
Common questions about our math & financial calculators.
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