💰 Finance & Money Calculators
Loans, taxes, investing and everyday money math, with every rate sourced.
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Reverse Sales Tax Calculator
Strip sales tax out of a total to find the pre-tax price and the tax paid.
Open calculator →Break-Even Calculator
Find how many units you must sell to cover fixed and variable costs.
Open calculator →ROAS Calculator
Measure return on ad spend as a ratio and a percentage.
Open calculator →Doubling Time Calculator
Find how long money or anything takes to double at a growth rate.
Open calculator →Basis Points (BPS) Calculator
Convert between basis points, percent and decimal.
Open calculator →Prorate Calculator
Prorate rent or any amount by days used out of a period.
Open calculator →Stock Profit Calculator
Work out profit and return on a stock trade, including commissions.
Open calculator →Out the Door Price Calculator
Total a car's real cost after tax, fees, trade-in and rebate.
Open calculator →Connecticut Mortgage Calculator (CT)
Estimate a CT monthly payment with property tax from the town mill rate.
Open calculator →Bridge Loan Calculator
Estimate interest-only payments and total cost of a short-term bridge loan.
Open calculator →MIRR Calculator
Modified internal rate of return from a cash-flow series.
Open calculator →Seller Financing Calculator
Monthly payment and balloon balance on an owner-financed sale.
Open calculator →Mobile Home Loan Calculator
Monthly payment and total interest on a manufactured-home loan.
Open calculator →Retirement Calculator (Ramsey-Style 12%/4%)
Project a nest egg and income using the 12% growth / 4% withdrawal method.
Open calculator →Barista FIRE Calculator
The portfolio you need when part-time income covers part of your costs.
Open calculator →Divorce House Buyout Calculator
Estimate the buyout to keep the house in a divorce.
Open calculator →Savings Bond Calculator (I & EE Bonds)
Estimate the growth of a US Series I or EE savings bond.
Open calculator →IUL Calculator (Illustrative)
Model indexed universal life cash value with cap, participation and floor.
Open calculator →Diminished Value Calculator (17c)
Estimate a car's lost value after an accident with the 17c formula.
Open calculator →Enterprise SEO ROI Calculator
Turn organic traffic and conversions into SEO return on investment.
Open calculator →Productivity Calculator (Output per Hour)
Measure output per hour and its dollar value.
Open calculator →Explore Other Categories
- 🏗️ Construction & Materials
- ➗ Algebra & Math
- 🩺 Health & Medical
- ⚖️ Legal & Insurance
- 🧮 Calculus & Symbolic Math
- 🏅 Sports & Hobbies
- ⚙️ Physics & Engineering
- 🧬 Biology & Genetics
- 📊 Statistics & Probability
- 🏎️ Automotive & Racing
- 🧪 Chemistry
- 🧵 Sewing & Crafts
- 🎓 Education & Academic
- 🍞 Food & Baking
- 🗓️ Lifestyle & Misc
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