Math & Finance Tools
Free math and finance tools: percentage calculator, mortgage calculator, loan calculator, and more. Calculate and convert numbers.
Percentage Calculator
Calculate percentages. Increase, decrease, difference. Free percentage calculator. For math, finance. Instant. No signup. Use instantly. No signup required.
Try it nowAge Calculator
Calculate age from birthdate. Years, months, days. Free age calculator. Next birthday. For forms, records. No signup. Process in browser. Instant results.
Try it nowDate Calculator
Calculate date difference. Add, subtract days. Free date calculator. Between two dates. For planning. No signup required. Use instantly. No signup required.
Try it nowBMI Calculator
Calculate BMI. Body Mass Index. Free BMI calculator. Health category. For weight, height. Metric, imperial. No signup. Process in browser. Instant results.
Try it nowLoan Calculator
Mortgage calculator with payoff simulator. PMI, property tax, insurance. Extra payment = pay off faster, save interest. Free. Amortization schedule. No signup.
Try it nowMortgage Calculator
Free mortgage calculator. Estimate monthly payment, total interest, amortization. Home price, down payment, rate, term. PMI, property tax, insurance. No signup.
Try it nowTip Calculator
Calculate tips. Split bills. Free tip calculator. Percentage, per person. For restaurants. Round up. No signup required. Use instantly. No signup required.
Try it nowHex/RGB/HSL Color Converter
Convert HEX, RGB, HSL. Free color converter. For designers. Copy hex codes. Instant conversion. No signup required. Process locally. Free. No registration.
Try it nowAspect Ratio Calculator
Calculate aspect ratios. Resize dimensions. Free aspect ratio calculator. 16:9, 4:3. For video, images. No signup. Process locally. Free. No registration.
Try it nowCompound Interest Calculator
Compound interest & retirement calculator. Age, inflation, goal. Free. Monthly contributions. Real value in today's dollars. No signup.
Try it nowFraction Calculator
Add, subtract, multiply, divide fractions. Free fraction calculator. Simplify, convert. For math. No signup required. Process in browser. Instant results.
Try it nowCrypto Profit Calculator
Calculate crypto profit or loss with live prices. Free crypto PnL calculator. Real-time ROI. Binance, Coinbase. No signup. Works in browser. Instant.
Try it nowGold Price Forecast
Forecast gold price using ML in your browser. LSTM model. 1 week to 1 month horizon. Free. Daily USD/oz data. No signup.
Try it nowROI Calculator
Calculate return on investment (ROI) instantly. Free ROI calculator. Investment profit, loss, annualized ROI. Stocks, crypto, real estate. No signup.
Try it nowSalary Calculator
Calculate take-home pay from gross salary or find gross for desired net. Free salary calculator for US, UK, Australia, Vietnam, Germany, Canada. Tax years 2024–2026. Income tax, FICA, state tax. No signup.
Try it nowRSU Tax Calculator
RSU tax calculator. Estimate tax on vesting. RSU, ISO, NSO. Federal, FICA, state. For tech employees. Free. No signup.
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