Finance Calculators

Calculate investment growth with compound interest, monthly contributions, inflation adjustment, and year-by-year breakdown.

Calculate 457(b) annual contribution limits, age 50+ and special 3-year catch-up amounts, plus estimated retirement savings.

Find the amount you need invested today for growth alone to reach your retirement target, with no further contributions, plus how your portfolio compares.

Calculate pre- and post-split share price, share count, and total investment value for common or custom stock split ratios.

Calculate reverse mortgage loan amount, monthly payments, and equity remaining over time with detailed amortization.

Calculate a property’s capitalization rate and net operating income from rental income and operating expenses, with benchmarks and price sensitivity.

Estimate home addition cost by square footage, room type, quality level, location factor, and optional foundation, HVAC, and permit add-ons.

Work out UK stamp duty band by band for England, Scotland and Wales, with first-time buyer relief, additional property and non-resident surcharges.

Find out how long your balance takes to clear and what it costs in interest, with a month-by-month schedule and what paying extra would save.

Calculate a roof depreciated value, accumulated depreciation and remaining useful life from its age, expected lifespan and replacement cost.

Find your new salary, raise amount and percentage increase from a percentage, fixed amount or target salary, across every pay frequency.

Calculate overtime pay at 1.5× your hourly rate, with regular pay, premium portion, blended rate and a check against the 40-hour federal rule.

Calculate the true cost of an employee including wages, employer taxes, benefits and overhead, with burden rate, loaded cost per hour and team totals.

Estimate Copart auction total cost: tiered buyer fees, gate and environmental charges, internet bid fees, storage, and grand total from your winning bid.

Calculate Stripe processing fees and net payout: percentage + fixed fee breakdown for US, international, ACH, SEPA, and custom rates.

Calculate Venmo fees for personal, business, Tap to Pay, and instant transfer transactions with total fee and net amount breakdown.

Estimate Grailed seller payout with commission tiers, domestic/international processing fees, total fees, and net amount received.

Calculate trade-up cost, sales tax, fees, and total out-of-pocket when trading in a phone, car, or device—compare trade-in vs private sale.

Find a vehicle’s true total cost with sales tax, title, registration and dealer fees, minus trade-in and rebates, fully itemized.

Find the pre-tax price and sales tax amount from a total that already includes tax, with a breakdown that always reconciles to the total.

Estimate a water bill from tiered usage rates, sewer charges and fixed fees, with an itemized breakdown by tier and the marginal cost per unit.

Calculate return on ad spend as a multiple, ratio and percentage, with profit, ACoS and the breakeven ROAS your gross margin actually requires.

Build a year-by-year IRS MACRS depreciation schedule with rates, accumulated depreciation and book value for every property class and convention.

Calculate earnings before interest and taxes from revenue, net income or EBITDA, with EBIT margin, gross profit and interest coverage.

Calculate EBITDA from EBIT, net income or revenue, with EBITDA margin, implied EBIT and how far EBITDA sits above the stricter measure.

Measure how demand responds to a price change using the standard or midpoint method, with elastic/inelastic classification and revenue impact.

Measure how demand responds to income changes and classify a good as luxury, necessity or inferior, with budget share impact and both calculation methods.

Measure how demand for one good responds to a price change in another, classifying the pair as substitutes, complements or unrelated goods.

Calculate the value buyers gain above what they paid, using the market demand triangle or a single buyer’s gap, with surplus per unit and price sensitivity.