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Calculators that just work.

Financial planning, health metrics, math & engineering tools, and everyday calculations — fast, private, and free. Everything runs in your browser; nothing is uploaded anywhere.

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Financial

Loans, real estate, small-business, and personal-finance calculators — 13 in total.

Loan/Mortgage Refinance Rental ROI Compound Interest Investment Growth Retirement Savings Goal Debt Payoff Budget Break-Even Margin/Markup Tax Estimator Currency Converter

Health & Fitness

BMI, calorie targets, body composition, pregnancy, and heart-rate zones — 6 in total.

BMI Calorie/TDEE Body Fat % Pregnancy Due Date Heart Rate Zones Water Intake

Math & Engineering

Unit conversion, geometry, algebra, statistics, matrices, and a full scientific calculator — 6 in total.

Unit Converter Geometry Scientific Statistics Algebra Solver Matrix Calculator

Everyday

Tips, discounts, age, and date math for quick everyday calculations — 4 in total.

Tip Calculator Discount Calculator Age Calculator Date Difference