Find a calculator for the decision you are making, from a monthly budget to a savings deadline, debt repayment or retirement scenario. This directory includes published US guides with calculation tools; each guide explains its inputs, assumptions and limits.
Choose a topic or search for a tool
Use the topic links to browse, or type a name such as rent, wedding, dividend or electricity. Open a guide to use the calculator alongside its explanation.
Calculators & guides
54 tool guides
Saving
10 tool guides
100 Envelope Challenge Planner: Weekly Pace and Per-Paycheck Cost
Plan the 100 envelope challenge around your paycheck: total saved, weeks to finish, the average and heaviest week, and an even amount to set aside…
Calculator and guideCD Ladder Calculator: Three Rungs at Their Original Maturities
Estimate what three fixed-rate CD rungs pay at their original maturities from principal, term and assumed APY, without a rollover forecast.
Calculator and guideChristmas Savings Plan: How Much to Save Per Paycheck
Work out how much to set aside each payday before your holiday spending deadline, with a hypothetical 2026 example and a Christmas club account checklist.
Calculator and guideHow Much to Save for a Wedding: Check Deposits Before the Big Day
Build a wedding cash target from unpaid quotes and test early deposits before relying on an affordable monthly saving plan.
Calculator and guideHow Much to Save for Maternity Leave: Plan the Cash Gap
Plan a maternity leave savings target around changing household cash receipts, one-time expenses, and the deepest cash shortfall, not just lost salary.
Calculator and guideHow to Save for a House in 2 Years: Total Cash and Monthly Plan
Turn a two-year home goal into one cash target: down payment, 2% to 5% closing costs and move-in cash, then the monthly and per-paycheck amount…
Calculator and guideHow to Save for a Vacation: Trip Cost and Per-Paycheck Plan
Price a trip line by line, count the paychecks before each payment is due, and see how much to set aside from every payday, including…
Calculator and guideMonthly Savings Interest Calculator: Add a Deposit or Withdrawal
Estimate simple savings interest from a nominal rate, earning days, and one deposit or withdrawal. Keep principal, earned interest, and credited balance separate.
Calculator and guideRebuild Your Emergency Fund After Using It: A Refill Plan
Rebuild your emergency fund after using it: work out the refill gap and scheduled contributions, and compare $50 and $30 biweekly plans for replacing $600…
Calculator and guideSinking Fund Calculator: Plan Each Payday Deposit by Due Date
A sinking fund assigns each known future bill its own target and deadline. Calculate the deposit needed on each remaining payday and adjust it when…
Calculator and guideEveryday Costs
23 tool guides
1500-Watt Space Heater Electricity Cost: Per Hour, Day, and Month
At an illustrative $0.20/kWh, 1,500 watts costs $0.30 per active hour. Use your own rate and operating time, and distinguish thermostat cycling from continuous use.
Calculator and guideALDI Prices vs Walmart: Compare Your Actual Basket
Use your local matched grocery quotes to compare actual whole-pack item cash, not just prorated cost. Check eligibility and leftovers before choosing a store.
Calculator and guideAmerican Airlines Overweight Bag: Pay or Split It?
Compare one overweight checked bag with two standard bags using your actual American Airlines quotes, suitcase cost and separate return charges.
Calculator and guideAnnual vs. Monthly Subscription: Calculate Your Break-Even Point
An annual plan costs less only when the months you expect to pay monthly would cost more than the annual price, with refund terms checked…
Calculator and guideCar Lease vs. Buy Calculator: Compare Net Cost Over the Lease Term
Compare leasing and buying the same car over the lease term, counting loan payments, the balance still owed, assumed resale value and lease fees.
Calculator and guideCheap Date Ideas: Compare Three Plans Before You Spend
Choose a date you both enjoy, then compare the full cash cost for two, including food, transportation, parking, and extras.
Calculator and guideCost Per Mile Calculator: Fuel, Running Costs and Ownership
Estimate your consumer vehicle cost per mile with fuel, insurance, maintenance, registration and optional depreciation. Keep financing and cash flow separate.
Calculator and guideCost Per Use Calculator: Compare Two Products Fairly
Compare purchase, setup, maintenance and expected resale over the same planned uses. See net cost per use without confusing it with affordability.
Calculator and guideDiscount Calculator: Sale Price, Savings and Sequential Discounts
Work out one item's discounted price and real dollar savings without adding sequential percentages. Optional tax assumptions and cent rounding are explicit.
Calculator and guideDry Cleaning Cost: Delivery Fees vs. Membership
Compare Rinse order minimums and delivery fees with feasible bundling, monthly Go, and the full annual membership commitment using your own subtotals.
Calculator and guideElectricity Cost Calculator for Appliances: Watts, Hours and kWh
Use watts and actual operating time for a rough incremental cost; use measured kWh or an EnergyGuide estimate for cycling appliances.
Calculator and guideEOB vs Bill: Match One Claim Without Counting a Payment Twice
Compare one processed EOB with its current provider balance. Count confirmed patient payments once and ask about differences without assuming a refund.
Calculator and guideEV Charging Cost Calculator: Home vs Public per Mile
Convert battery kWh to grid kWh with your charging efficiency, then compare home, public and gasoline fuel costs per mile for the same distance.
Calculator and guideGrocery Budget for a Family of 4: USDA Food Plan Calculator
Build a monthly grocery target for your family from August 2026 USDA food plan costs, adjust it for ages and household size, compare it with…
Calculator and guideIs a Warehouse Club Membership Worth It? Count Real Trips
Subtract the extra cost of each club trip from genuine same-basket savings, then see how many planned visits cover the annual fee.
Calculator and guideIs Buying in Bulk Cheaper After Food Waste?
Bulk is cheaper only if its lower price covers what you will actually use, and sometimes a smaller package wins even at a higher shelf…
Calculator and guideLaundry Cost Calculator: Home Washer vs. Laundromat per Load
Compare home and laundromat costs per load, month and year using your electricity, water, detergent, ownership allowance and local laundry prices.
Calculator and guideNo-Spend Challenge: What Did You Actually Save?
Reconcile one completed no-spend challenge with added substitute costs and matched later purchases, without counting ordinary next-month bills.
Calculator and guideProrated Rent Calculator: Compare Three Daily-Rate Methods
Enter monthly rent and the first and last days charged to compare actual-month, 30-day and 365-day prorated rent for one partial month.
Calculator and guideRent Split Calculator for 2–4 Roommates: Equal, Income or Area
Compare three agreed ways to divide rent without treating any method as uniquely fair or legally required.
Calculator and guideRent vs. Commute Cost Calculator: Compare Both Addresses Fairly
A lower rent is not automatically a cheaper month. Compare each home's housing charges and actual travel cash over the same period, with commute time…
Calculator and guideUnit Price Calculator for Groceries: Compare Matching Units
Divide the amount you pay by the matching quantity, but never compare a weight ounce with a US fluid ounce or confuse a cheap unit…
Calculator and guideWork-From-Home Cost Calculator: Compare Your Own Cash, Not a Slogan
Remote work can change utilities, equipment and travel spending. Compare the same number of workdays with your actual employer terms, and keep commute time separate…
Calculator and guideBudgeting
3 tool guides
50/30/20 Rule Calculator: Adjust the Split to Your Bills
Enter take-home pay to see 50/30/20 needs, wants, and savings targets. Compare a $4,000 budget at 50/30/20 and 60/20/20, then choose a split your bills…
Calculator and guideHow to Get One Month Ahead on Bills Without Counting Savings Twice
One month ahead on bills means next month’s known bills are funded before that month starts. Define the target clearly and keep it distinct from…
Calculator and guideThree-Paycheck Months 2026 Calculator for Biweekly Pay
Find three-paycheck months in 2026, 2027, or another year from a regular biweekly payday. See projected dates and net totals, then check holidays and when…
Calculator and guideDebt
2 tool guides
Balance Transfer Calculator: Fee, Promo APR and Payoff
Compare keeping one credit-card balance with a balance transfer: the fee, promo APR, standard APR and one fixed payment decide whether it saves money.
Calculator and guideDebt Avalanche Calculator: Avalanche vs. Snowball for Three Debts
Compare debt avalanche and snowball payoff orders for up to three debts with fixed minimums and one constant monthly budget, including same-month rollover.
Calculator and guideInvesting & Retirement
9 tool guides
Barista FIRE Calculator: Part-Time Pay After Tax and Your Number
Estimate your Barista FIRE number after FICA or self-employment tax on part-time pay, health coverage, and the hours your current portfolio still needs.
Calculator and guideCoast FIRE Calculator: Today's Target and Real-Dollar Gap
Estimate how much you would need invested today to reach a retirement target with no new contributions, with the gap and projections in today's dollars.
Calculator and guideDividend Calculator: Annual and Monthly Estimates, DRIP vs. Cash
Estimate annual dividends and monthly averages from an assumed yield, then compare reinvesting with retaining cash. Examples hold prices constant and exclude taxes, fees, and…
Calculator and guideIs a Financial Advisor Worth It? Compare Your Fee Quotes
Compare comparable advisor quotes over one period, with confirmed cash savings and optional personal time value kept separate.
Calculator and guideMega Backdoor Roth: How Much After-Tax 401(k) Room You Have in 2026
Work out how much after-tax 401(k) money your plan could accept in 2026, which limit binds first, and what to check before a mega backdoor…
Calculator and guidePay Off Mortgage or Invest? Compare the Same Monthly Budget
Compare investing, mortgage prepayment and a split strategy under one monthly budget, including reinvestment after payoff and remaining debt.
Calculator and guideRoth vs. Traditional 401(k): Reinvesting Your Tax Savings
Compare Roth and Traditional 401(k) contributions using the same gross salary budget. Test how reinvesting tax savings changes the future withdrawal-tax break-even rate.
Calculator and guideStock Profit Calculator: Fees, Return and Break-Even Price
Estimate before-tax profit on one stock purchase and sale after separate buy and sell fees, with return on the full investment and the break-even sell…
Calculator and guideStock Split Calculator: Forward and Reverse Splits
Model theoretical post-split shares, adjusted price and unchanged total value for a forward or reverse split, with fractional results kept visible.
Calculator and guideMoney Basics
6 tool guides
Biweekly vs. Semimonthly Pay: What Changes in Your Monthly Budget
Biweekly pay means 26 checks a year and semimonthly means 24. Compare check size, two- and three-payday months, bill set-asides and overtime timing with hypothetical…
Calculator and guideBreak-Even Calculator: Contribution Margin and Target Profit
Calculate a single product's contribution margin and the minimum whole-unit sales needed to cover fixed costs or reach a target operating profit.
Calculator and guideEtsy Fee Calculator for One US Etsy Payments Sale
Estimate one US Etsy sale with the 6.5% transaction fee, 3% + $0.25 processing and $0.20 listing fee, keeping sales tax out of seller revenue.
Calculator and guideMarkup and Gross Margin Calculator: Price from Cost or Check a Sale
Price one item from a direct cost or compare an actual price without mistaking gross margin for net profit.
Calculator and guideOvertime Calculator: Weekly Gross Pay With Federal and State Rules
Enter a regular hourly rate, hours in one workweek, a threshold and a premium to split regular and overtime gross pay, with federal and state…
Calculator and guidePay Raise Calculator: New Gross Pay and Real Value After Inflation
Enter your salary or hourly rate, a percentage or dollar raise and a same-period price change to see new gross pay and what it is…
Calculator and guideMore tool guides
1 tool guide
Frugal Living: Is This Habit Worth Your Money and Time?
Test one frugal living habit with your own spending, setup costs, realistic active months, and extra time before making a longer savings claim.
Calculator and guideNo matching tool guides.
Before relying on a result
- Match the currency, dates and periods in the guide to your own records.
- Check fees, taxes and eligibility that a calculator does not cover.
- Treat scenarios as estimates, not guaranteed returns, provider quotes or personalised advice.
Our calculator code runs in your browser and does not send or save your entries. Normal site visits and contact messages are covered by our Privacy Policy.
Browse all money topics
Browse topics
Budgeting
Build a household budget around take-home income, paydays and essential spending. Compare budget splits and envelope plans, then use the guide beside each calculator.
6 articles
Browse articlesSaving
Plan savings goals, emergency funds and dated expenses with your own numbers. Compare contribution schedules and interest assumptions without treating estimates as guarantees.
14 articles
Browse articlesDebt
Compare debt repayments, balance-transfer costs and payoff approaches. Check each guide’s interest assumptions, fees and limitations before changing a repayment plan.
4 articles
Browse articlesEveryday Costs
Compare groceries, subscriptions, utilities, housing and transport costs over the same period. Use itemised inputs and avoid counting the same expense twice.
36 articles
Browse articlesMoney Basics
Understand pay, pricing and everyday financial calculations. The guides separate gross amounts, fees and planning estimates so that unlike numbers are not compared.
8 articles
Browse articlesInvesting & Retirement
Explore dividend, stock and retirement-planning calculators. Test your own assumptions and read the limits: market returns, prices, dividends and future income are not guaranteed.
9 articles
Browse articles