OmniCalc All in One Calculator

OmniCalc is your ultimate all-in-one offline calculator and unit converter app — a single utility toolbox for every precision calculation and unit conversion you need in daily life, work, or study. With 35+ free offline tools across three categories, OmniCalc replaces a drawer full of separate utility apps with one clean, fast, and completely private multi tool experience. 100% OFFLINE CALCULATOR — No internet connection is ever required. Every smart calculator and unit conversion tool runs entirely on your device. Your data never leaves your phone. ZERO ADS — NO TRACKING — NO ANALYTICS This privacy calculator contains no advertisements, no analytics SDKs, no crash reporters, and no third-party trackers. What you do in this offline tools app stays on your device. ★ FINANCIAL & MATH CALCULATORS • Percentage Calculator — calculate discounts, markups, tips, and profit margins in seconds • Loan / EMI Calculator — calculate monthly installments and interest rates for any loan • ROI Calculator — return on investment financial calculator with clear breakdowns • Tax & VAT Calculator — add or remove tax from any amount instantly • Tip Splitter — split bills and calculate tips for any group size • Discount Calculator — find the final price after any sale discount • Salary Converter — hourly, daily, monthly, and annual salary calculator • Profit Margin — calculate gross and net margins easily • Compound Interest Calculator — visualize how money grows over time • Fraction Calculator — add, subtract, multiply, and divide fractions • Proportion Solver — solve math formulas like A/B = C/X in one tap ★ UNIVERSAL UNIT CONVERTERS • Length Converter — km, m, cm, ft, in, mi, nautical miles • Weight Converter — kg, lbs, oz, g, tonnes • Area Converter — m², km², acres, hectares, land measurements (feddan) • Temperature Converter — Celsius, Fahrenheit, Kelvin • Volume Converter — liters, ml, gallons, cups, fluid oz • Speed Converter — km/h, mph, m/s, knots • Time Units — seconds, minutes, hours, days, weeks, years • Data Size Converter — B, KB, MB, GB, TB, PB • Pressure Converter — bar, PSI, atm, Pa • Power Converter — watts, kilowatts, horsepower • Energy Converter — joules, calories, kWh, BTU • Angle Converter — degrees, radians, gradians • Data Rate — Mbps, MB/s, Gbps • Fuel Economy — MPG (US/UK), L/100 km ★ LIFESTYLE & PRODUCTIVITY TOOLS • Age Calculator — exact years, months, and days from any birth date • Password Generator — secure random passwords with custom rules offline • Counter / Tasbeeh — multi-purpose click counter with lap support • BMI Calculator — body mass index with health range guide • Stopwatch — precision timer with lap recording • Random Picker — decide randomly from a custom list • Color Converter — HEX, RGB, HSL instant conversion tool • Word & Character Count — live text counting for messages • Roman Numeral Converter — numbers to Roman and back • Water Intake Calculator — personalized daily hydration goal • Shoe Size Converter — US, UK, EU, CM across men/women/kids ★ DESIGN & USABILITY FEATURES • Beautiful dark-first UI with full light mode support • Bento grid dashboard — see all utility tools at a glance • Favorites — pin your most-used offline calculator for one-tap access • Adjustable text size — small, normal, large, extra-large • Haptic feedback for a satisfying tactile experience • Backup & Restore — export and import your data locally ★ MULTILINGUAL SUPPORT OmniCalc is fully localized in: - English - Português (Portugal) - Português (Brasil) - 中文 (简体) — Chinese Simplified - العربية — Arabic Switch language instantly from Settings with no restart required. OmniCalc is a free calculator, offline tool, and built to respect your privacy. No sign-up. No cloud. No nonsense. Just tools that work. Download OmniCalc today and simplify your daily calculations with the ultimate unit conversion and smart calculator app.