Purchasing Power Calculators

Choose the right calculator

Compare prices, budgets, household costs, and the values you enter for everyday purchases.

Compound Interest Calculator

Enter APR or APY, compounding frequency, starting principal, and optional end-of-period contributions.

Cost Of Living Calculator

Compare your own monthly household budgets for two places in one currency. No city price database is used.

Unit Price Calculator

Compare prices per kilogram or liter using the prices and package quantities you enter. Mass and volume are compared separately.

Electricity Cost Calculator

Estimate electricity use and cost from device wattage, hours of use, number of devices, and your own price per kWh. No rate is fetched automatically.

Electric Heater Cost Calculator

Estimate electric heater use and cost from rated power, run time, duty cycle, and your own price per kWh. The result is a scenario, not a bill forecast.

Monthly Expenses Calculator

Add your monthly household income and expenses in U.S. dollars. Annual subscriptions are divided by twelve.

50 30 20 Budget Calculator

Use the 50/30/20 split as an optional planning guide for needs, wants, and savings or debt repayment. It is not a required budget rule.

Food Budget Calculator

Divide the food budget you enter across days, weeks, people, and meals. This tool contains no national recommended food budget.

Rent Vs Buy Calculator

Compare buying and renting using your own purchase price, rent, loan terms, ownership costs, growth rates, and sale assumptions. No local tax or closing cost is supplied automatically.

Shrinkflation Calculator

Compare two package sizes and prices for the same product to see how the price per unit has changed.

Price History Calculator

Compare up to twelve dated prices and package quantities that you enter yourself. This tool does not fetch product prices or store a price history.

Remote Work Savings Calculator

Estimate remote work savings from your actual avoided commute and meal costs, added home costs, and any allowance you enter. No tax schedule is applied.

Recipe Cost Calculator

Estimate recipe cost from the ingredient quantities, package sizes, and prices you enter. No food price database is used.

Savings Calculator

Project a future savings balance from starting money, end-of-month contributions, an assumed effective annual interest rate, and duration. Goal mode solves for a monthly contribution. Enter your own rate; the calculator has no live savings rate.

Electricity Rate Calculator

Compare a single electricity rate against peak and off-peak rates using your own annual kWh, rate prices, allocation, and annual fixed charges. No utility schedule or regional rate is assumed.

Electricity Bill Calculator

Estimate average monthly and annual electricity costs from your entered kWh, rate structure, and fixed charge. Optional percentage changes make a second scenario. It does not reproduce a utility bill or add local taxes.

Rent Increase Calculator

Apply the percentage change you enter to the current monthly rent. This is arithmetic only; check the rules that apply where the property is located.

Car Ownership Cost Calculator

Estimate car ownership cost from your purchase price, estimated resale value, distance, energy use, and annual costs. Resale value is your scenario; depreciation is spread evenly over the selected holding period.

Gas Vs Electric Car Calculator

Compare a gas car and an electric car for the same holding period and annual distance using purchase and resale amounts, energy use, rates, insurance, and maintenance you enter. No incentive or market price is supplied.

Inflation Calculator

Compare U.S. dollar purchasing power between two years using published BLS annual CPI-U averages.

Salary Inflation Calculator

Compare a monthly salary with CPI-U inflation and calculate its change in start-year dollars.

Pension Inflation Calculator

Compare a monthly pension with CPI-U inflation and calculate its change in start-year dollars.