CalcKit: All-in-One Calculator

CalcKit is 33 calculators in one clean, fast app — the money, health, school, and everyday math you actually run, without the ads-first clutter or the spreadsheet. Every calculator is built for real decisions: enter your numbers, see the answer instantly, and get the supporting detail — charts, breakdowns, and full amortization tables — right underneath. BUILT FOR THE US AND CANADA Most calculators guess at your country. CalcKit asks once and then gets it right: • Take-home pay with federal and state or provincial brackets • Sales tax that knows GST, HST, and PST — not just a flat rate • Retirement savings modeled as 401(k)/IRA or RRSP/TFSA • Closing costs including land transfer tax • Imperial or metric units, set to match your region FINANCE & TAX (15) Mortgage Payment • Take-Home Pay • Sales Tax • Loan Payoff • Compound Interest • Retirement Savings • Savings Goal • Rent vs Buy • Currency Converter • Tip Calculator • Profit Margin • ROI • CAGR • APR • Commission REAL ESTATE (5) Cap Rate • Cash-on-Cash Return • Rental Yield • Closing Costs • Amortization Schedule HEALTH & FITNESS (5) BMI • TDEE / Calories • Macro Calculator • Body Fat % (Navy method) • Water Intake STUDENT (3) GPA Calculator • Final Exam Grade • Student Loan EVERYDAY (5) Percentage • Discount • Unit Converter • Unit Price • Age Calculator DESIGNED TO BE FAST • Favorites — pin the calculators you use weekly to the top • History — every calculation saved automatically, ready to reopen • Charts and tables that make long-term numbers make sense • Light and dark themes that follow your system setting • Seven languages: English, Español, Français, 简体中文, 繁體中文, 日本語, 한국어 PRIVATE BY DESIGN CalcKit works entirely offline. There is no account, no sign-up, and no server — your salary, your mortgage, and your health numbers stay on your device and are never uploaded anywhere. CALCKIT PRO A single one-time purchase — no subscription: • Remove banner ads • Extended history: 100 calculations instead of 20 • Unlimited saved calculations instead of 5 Note: the currency converter uses built-in offline reference rates for eight major currencies and is intended for quick estimates, not for trading or settlement. Questions or a calculator you want added? Get in touch — CalcKit is actively developed and the list keeps growing.