Everyday Calculators

Purchasing power in both directions, the cumulative erosion of a fixed sum, and the income you’d need to keep pace.

Map your real expenses into the 50/30/20 needs/wants/savings buckets, see which one you overspend, and find your savings rate.

How many months you’re covered today, a recommended 3–6 month target band, and how long it takes to get there at your pace.

Turn a mix of weekly, monthly, and yearly subscriptions into one true annual cost — and see what investing it instead would be worth.

Tip on the pre-tax subtotal (not the tax), split the bill any number of ways, round up, and compare common tip percentages.

Categorized assets and liabilities, your liquid vs illiquid split and debt-to-asset ratio, and a multi-year net-worth projection.

Compare two cities and find the salary you’d need to keep your standard of living — with a category-by-category breakdown.

Per-card and overall utilization against the 30%/10% guidance — plus the exact paydown to reach a target ratio.

How much coverage you need via the DIME method (debt, income, mortgage, education) — not a crude multiple of your income.

Split a wedding budget across categories using typical industry percentages, with the per-guest cost that drives the total.

Sale price and amount saved — including stacked discounts (which multiply, not add) and the real out-the-door price with tax.

Work out the sale price and dollars saved for any percent off — plus stacked "extra % off" coupons (which multiply, not add) and the final price with tax.

Turn a percentage discount into the price you actually pay and the amount you save — with support for a second stacked discount and sales tax.

Gross pay with time-and-a-half and double-time tiers, the overtime premium, and a weekly-to-annual breakdown.

Split your take-home pay into needs, wants, and savings on the 50/30/20 rule — a simple, flexible budget framework with the dollar targets worked out for you.

Fuel cost of a trip from distance, fuel economy, and price per gallon — plus cost per mile, to compare routes, vehicles, and the price of a commute

What an appliance costs to run — daily, monthly, and yearly — from its wattage, hours of use, and your price per kWh. Find the quiet energy hogs in your home.

Three percentage questions in one: what is X% of Y, X is what percent of Y, and the percentage change from one number to another — each with the working shown.