Productivity Calculators

Add assets and liabilities across categories to calculate and visualize your net worth in real time - 6 currencies, asset breakdown chart, no signup required. Free online net worth calculator.

Calculate break-even units, revenue, contribution margin, and margin of safety from fixed costs, variable cost, and selling price - with a live chart. Free online break-even calculator.

Calculate how much to save monthly, weekly, or bi-weekly to reach any financial goal by your target date - supports interest rates, existing savings, and multiple contribution frequencies. Free online savings goal calculator.

Calculate investment returns with compound interest. Input principal, rate, time, and compounding frequency. Visual growth chart, monthly additions (SIP), and yearly breakdown. Free online investment return calculator, no signup required.

Calculate estimated due date from last menstrual period or conception date using Naegele's Rule (LMP + 280 days). Shows weekly pregnancy timeline with trimester markers, key developmental milestones, current week, and progress percentage. All processing runs locally in your browser - free online Pregnancy Due Date Calculator, no signup required.

Comprehensive investment calculator with monthly contributions, inflation adjustment, and tax considerations. Shows projected vs inflation-adjusted real value with a year-by-year growth chart and detailed monthly schedule. Supports annual return rate, inflation rate, and capital gains tax rate. Free online investment calculator, no signup required.

Calculate percentages online with four modes: what is X% of Y, X is what % of Y, X is Y% of what, and percentage change. Quick preset buttons for common calculations (10%, 15%, 20%, 25%, 50%) - all processing happens locally in your browser, no signup required. Free online percentage calculator.

Convert between 250+ units across 15 categories - length, mass, volume, area, temperature, speed, time, pressure, energy, power, data storage, fuel economy, angle, force, and frequency. Smart search, real-time conversion, and all common unit pairs.

Calculate Body Mass Index using WHO-recommended thresholds for Asian populations. Asian-specific BMI categories: underweight (<18.5), normal (18.5-23), overweight (23-27.5), obese (≥27.5). Visual Asian BMI scale with category markers, healthy weight range, weight to lose/gain, and personalized recommendations. Supports metric and imperial units. All processing runs locally in your browser - free online Asian BMI Calculator, no signup required.

Estimate trip costs including fuel, accommodation, food, and activities with per-person and total cost breakdown - supports 12 currencies, km/miles units, no signup required.

Full scientific calculator with trigonometric functions (sin, cos, tan, and inverses), logarithms (log and ln), exponents (x², x³, xʸ, 10ˣ, eˣ), square roots, factorials, pi, e, memory functions (MC/MR/M+/M-/MS), and degree/radian mode. Calculation history panel stores up to 50 entries. Keyboard input supported. All processing runs locally in your browser - free online Scientific Calculator, no signup required.

Convert Arabic numbers (1-3999) to Roman numerals and back with bidirectional conversion. Shows step-by-step breakdown of each conversion with detailed explanations. Includes conversion history of recent conversions. All processing runs locally in your browser - free online Roman Numeral Converter, no signup required.

Calculate the exact age difference between two dates in years, months, days, hours, and minutes with birthday countdowns, zodiac signs, birth weekday, and a visual age comparison - all running locally in your browser, no signup required. Free online age difference calculator.

Convert between 150+ currencies with live exchange rates via the Frankfurter API. Features favourites, offline caching via localStorage, inverse rates, and a 30-day historical trend chart - no signup required.