Calculator Directory
Financial Calculators
Solve everyday price, discount, budget, and cost questions with visible assumptions and formulas.
Percent Off Calculator Calculate savings, sale subtotal, tax, and final total.
Percentage Calculator Solve percent-of, percent-share, and percentage-change problems.
Kitchen Remodel Cost Calculator Build a flexible kitchen budget with contingency.
Bathroom Remodel Cost Calculator Build a flexible bathroom budget with contingency.
Electricity Cost Calculator Estimate monthly and annual appliance operating cost.
Loan Payment Calculator Estimate fixed monthly payments and total interest.
Simple Interest Calculator Calculate simple interest and ending amount.
Tip Calculator Calculate gratuity, total bill, and per-person share.
Mortgage Calculator Estimate principal, interest, taxes, insurance, and total monthly housing cost.
Compound Interest Calculator Project growth from a starting balance, rate, time, and monthly deposits.
Savings Calculator Estimate savings growth from recurring deposits and interest.
Sales Tax Calculator Calculate discounts, sales tax, and the final purchase total.
Auto Loan Calculator Estimate a vehicle payment, finance charge, and total paid.
Retirement Calculator Project retirement savings and compare with an income target.
Investment Return Calculator Measure gain, total return, and approximate annualized return.
Debt Payoff Calculator Estimate payoff time, interest, and total paid.
Inflation Calculator Project future prices and purchasing-power change.
Amortization Calculator Estimate loan payment, first-payment split, and total interest.
Mortgage Payoff Calculator See how extra payments could change payoff time and interest.
APR Calculator Estimate APR when upfront finance fees reduce net loan proceeds.
Credit Card Payoff Calculator Estimate payoff time, interest, and total payments.
House Affordability Calculator Estimate a planning-level home price and loan amount.
CD Calculator Estimate CD maturity value, interest, and effective APY.
Debt-to-Income Ratio Calculator Calculate monthly DTI and compare it with a planning target.
Sales Commission Calculator Calculate commission, base pay, bonuses, and total compensation.
401(k) Calculator Project retirement balance, employer match, contributions, and growth.
Personal Loan Calculator Estimate monthly payments, interest, fees, and total borrowing cost.
ROI Calculator Calculate net profit, total ROI, and annualized return.
Rent vs. Buy Calculator Compare estimated renting cost with the net cost of buying.
Student Loan Calculator Estimate payment, payoff time, interest, and extra-payment savings.
Budget Calculator Compare monthly income, planned spending, savings, and money remaining.
Salary Calculator Convert hourly pay and overtime into weekly, monthly, and annual gross pay.
Paycheck Calculator Estimate take-home pay from gross earnings, deductions, and adjustable withholding rates.
Profit Margin Calculator Calculate gross profit and gross profit margin from revenue and cost of goods sold.
Markup Calculator Calculate a selling price from unit cost and markup, with the equivalent gross margin.
Break-Even Calculator Estimate break-even quantity, whole units to sell, and contribution margin.
Unit Price Calculator Compare two package prices per unit using the same quantity unit.
Stacked Discount Calculator Calculate the final price and effective savings from two successive percentage discounts.
Present Value Calculator Discount one future lump sum to its estimated value today.
Future Value Calculator Project a starting amount and regular contributions over time.
Interest Rate Calculator Solve the constant compound rate between a beginning and future value.
Payback Period Calculator Estimate simple and discounted cost-recovery time.
Current Ratio Calculator Calculate current ratio and working capital from current assets and liabilities.
Quick Ratio Calculator Calculate quick ratio from cash, marketable securities and net receivables.
Inventory Turnover Calculator Calculate inventory turnover and inventory days from cost of sales and average inventory.
Net Worth Calculator Calculate net worth from total assets and liabilities.
Emergency Fund Calculator Set an emergency reserve target from your monthly expenses and chosen coverage.
Debt to Equity Calculator Calculate the total-liabilities-to-equity ratio.
Book Value Per Share Calculator Calculate common book equity and book value per share.
Interest Coverage Calculator Calculate EBIT interest coverage and EBIT less interest for the same period.
Subscription Cost Calculator Project the total and average monthly cost of a subscription with an assumed annual price increase.
Bill Split Calculator Split a shared bill with tax, a tip based on the pre-tax amount, and optional group fees.
Price Per Use Calculator Compare purchase and upkeep costs with an assumed number of uses over the item’s lifetime.
Meeting Cost Calculator Estimate staff time cost per meeting and over a recurring yearly schedule.
Membership Break-Even Calculator Find how many purchases are needed for a membership discount to cover an annual fee.
Choose the right calculator
Use current prices and rates, test more than one scenario, and keep fees, taxes, financing, and uncertainty visible. A calculated answer is only as current as its inputs.
How these calculators are checked
Each tool shows its formula, assumptions, worked example, and limitations. We test default values, decimals, zero and invalid inputs, unit conversions, and rounding behavior. Learn more on How Our Calculators Work .
Important: These tools provide educational estimates, not individualized financial, investment, tax, lending, or legal advice.
Related calculator categories
Reference and review
This category and its linked calculators were reviewed by the DIY Cost Tools editorial team on October 3, 2026. Additional tools will be added without changing the category URL.