Personal Finance

  • Original Price Calculator (Percent Off)
    Find the original price before a discount. Enter the sale price and percent off to reverse-calculate the pre-discount price and the discount amount.
  • Rent-to-Income Ratio Calculator
    Calculate your rent-to-income ratio instantly. See what percentage of your monthly income goes to rent and whether it fits the 30% affordability rule.
  • 50/30/20 Budget Calculator
    Split your monthly income with the 50/30/20 rule: 50% needs, 30% wants, 20% savings. Free budget calculator with instant category amounts.
  • MPH to KPH Converter
    Convert miles per hour (mph) to kilometers per hour (km/h) instantly. Accurate vehicle speed conversion using the exact 1.609344 factor.
  • Social Security PIA Calculator (US)
    Estimate your US Social Security Primary Insurance Amount (PIA) from AIME using the 90%/32%/15% bend-point formula. Enter bend points for your year.
  • 401(k) Employer Match Value Calculator
    US 401(k) employer match calculator. Find your annual free match dollars from salary, your contribution %, the match cap, and the match rate.
  • Per Diem Travel Allowance Calculator
    Calculate your total per diem travel allowance from daily rate and trip length, with an optional 75% rate for the first and last travel day.
  • Discount + Tax Final Price Calculator
    Find the final price of an item after applying a percentage discount and then sales tax. See savings, taxed amount, and total payable instantly.
  • How Much to Save Per Day Calculator
    Find out how much money to save per day to hit your savings goal by a target date. Enter your goal, days remaining, and current savings.
  • Traditional IRA Calculator (US)
    Estimate the future value of your US Traditional IRA with monthly contributions and compound growth. See projected balance, contributions, and interest earned.
  • Savings Needed for Target Passive Income Calculator
    Find how much you need to invest to generate your target annual passive income at a given yield. Free, instant principal calculator.
  • Foreign Currency Price Comparison Calculator
    Convert a foreign-currency price into your home currency using the current exchange rate. Quickly compare prices while traveling or shopping online.
  • What Time to Leave for the Airport Calculator
    Find out exactly what time to leave for the airport. Subtract check-in, drive, and parking time from your flight departure to never miss a flight.
  • Linear Luggage Dimensions Calculator
    Add your bag's length, width and height to get its linear dimensions and instantly check whether it fits an airline's L+W+H size limit.
  • Kilometers to Miles Converter
    Convert kilometers to miles instantly with this free calculator. Uses the exact factor 1 mile = 1.609344 km for accurate distance conversion.
  • Pounds to Kilograms Baggage Weight Converter
    Convert your baggage weight from pounds (lb) to kilograms (kg) instantly. Check against airline weight limits before you fly. kg = lb / 2.20462262.
  • Home Equity Calculator
    Calculate your home equity and equity percentage from your home's value and mortgage balance. See your loan-to-value (LTV) ratio instantly.
  • Present Value of Uneven Cash Flows Calculator
    Compute the present value (PV) of even or uneven future cash flow streams. Supports compounding per period and beginning/end-of-period timing.
  • Overtime Pay Calculator
    Calculate your overtime pay from OT hours, hourly rate and multiplier (1.5×, 2×). See extra weekly, monthly and yearly income from overtime.
  • Hourly to Monthly Budget Calculator
    Convert your hourly wage into monthly take-home pay. Enter your rate, weekly hours, and tax rate to see net monthly, weekly, and annual income for budgeting.
  • Road Trip Time Calculator
    Estimate total road trip time from distance, average speed, and rest stops. Adds driving time plus break time for a realistic arrival estimate.
  • Interest-Only Monthly Income from Deposit Calculator
    Calculate the monthly interest income from a savings deposit or lump sum. Enter your principal and annual rate to see your monthly payout.
  • Inflation-Adjusted Pension Calculator
    Calculate the real, inflation-adjusted value of your pension. See how much purchasing power your fixed pension loses over time at a given inflation rate.
  • NPV Calculator for Uneven Cash Flows
    Calculate the Net Present Value (NPV) of even or uneven cash flows. Discount each period at a chosen rate, with intra-period compounding and begin/end timing.

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