From restaurant tip splitting and sales tax to BMI, mortgage payments, recipe scaling, and work timesheets. Instant calculations with zero signup, fully responsive, and country-adaptive.
Click any tool below to calculate immediately. Filter by category or use the live search above.
Quickly calculate restaurant tips, tax, and split the final bill evenly among friends.
Find the final discounted price and how much money you save on shopping sales and coupons.
Add or reverse sales tax, VAT, or GST with pre-loaded country rates for US, UK, EU, India, Canada & more.
Convert between USD, EUR, GBP, INR, CAD, AUD, JPY, AED and major global currencies with custom exchange rate override.
Compute monthly EMI repayments, total interest payable, and full loan amortization for personal, auto, or business loans.
Estimate monthly mortgage payments including principal, interest, property taxes, home insurance, and PMI.
Track income vs. fixed & variable expenses following the 50/30/20 rule to determine net monthly savings.
Calculate fuel cost, gallons/liters consumed, and per-person travel expenses for road trips.
Estimate your take-home net pay after income taxes, social security, pension, and payroll deductions.
Forecast how your wealth grows over time with initial deposit, recurring monthly contributions, and compounding interest.
Determine how long it will take to be debt-free or how much you need to pay monthly to eliminate credit card balances.
Calculate how inflation erodes purchasing power over time and what future goods will cost.
Calculate your Body Mass Index (BMI) and health category based on World Health Organization standards.
Estimate your Total Daily Energy Expenditure (TDEE) and target calories for weight loss, maintenance, or muscle gain.
Find out how much water you should drink daily based on weight, workout intensity, and climate.
Calculate the best bedtime or wake-up time based on natural 90-minute REM sleep cycles to avoid waking up groggy.
Determine your aerobic, fat burn, and anaerobic heart rate training zones using the Karvonen formula.
Convert daily step count into kilometers, miles, and estimated active calories burned.
Split your daily calorie target into exact grams of protein, carbohydrates, and healthy fats based on your fitness goals.
Plan and track your eating and fasting windows for 16:8, 18:6, 20:4, and OMAD protocols.
Compare clinical ideal weight formulas (Devine, Robinson, Miller, and Hamwi) based on gender and height.
Estimate baby delivery date, current gestational week, and trimester based on your last menstrual period (LMP).
Scale recipe ingredient quantities up or down for any number of dinner guests or batch sizes.
Convert between cups, tablespoons, teaspoons, grams, ounces, milliliters, and fluid ounces for cooking and baking.
Convert oven temperatures between Celsius, Fahrenheit, Fan-Forced (Convection), and British Gas Mark.
Calculate exact oven roasting time and safe internal temperatures for Beef, Chicken, Turkey, Pork, and Lamb by weight.
Formulate artisan bread recipes using Baker's math where flour equals 100% and water, salt, and yeast are ratios.
Calculate safe thawing times in the refrigerator or cold water bath for meat and poultry to prevent foodborne illness.
Calculate floor and wall surface area in square feet, square meters, square yards, and perimeter for remodeling.
Determine exactly how many gallons or liters of paint and primer you need for walls, subtracting windows and doors.
Calculate how many floor tiles, wood planks, or boxes you need, including a recommended 10% to 15% cutting waste margin.
Calculate daily, monthly, and yearly running costs of home appliances based on wattage and electricity tariff (kWh).
Find the ideal AC cooling capacity in BTU/hr and tonnage based on room dimensions, ceiling height, sunlight, and occupants.
Calculate how many rolls of wallpaper are needed for a room, accounting for pattern repeat drops and wall height.
Calculate the volume and water storage capacity of cylindrical or rectangular tanks in Liters, US Gallons, and cubic meters.
Estimate the weight of grass seed and fertilizer bags needed for new lawns or seasonal overseeding.
Calculate total days, weeks, months, weekdays, and weekend days between any two calendar dates.
Calculate your exact age in years, months, days, hours, and minutes, plus a countdown to your next birthday.
Calculate daily and weekly worked hours, unpaid lunch breaks, overtime hours, and gross wages.
Convert times between international cities and find golden overlapping working hours across time zones.
Schedule and structure your study or work blocks with 25-minute Pomodoro sessions and short/long breaks.
Live countdown of days, hours, minutes, and seconds until upcoming exams, vacations, weddings, or deadlines.
Estimate how long it will take to read an article or deliver a speech based on word count and reading speed.
Solve for speed, distance, or travel duration, and calculate estimated arrival time (ETA) from departure time.
Convert between Miles per Gallon (US MPG, UK MPG), Liters per 100km (L/100km), and Kilometers per Liter (km/L).
Calculate total elapsed travel time, flight in-air hours, and connection layover durations across time zones.
Convert suitcase weights between kg and lbs and estimate airline overweight baggage fees before reaching the airport.
Solve everyday percentage queries: What is X% of Y? X is what percent of Y? Percentage increase/decrease from A to B.
Compute weighted or unweighted college and high school GPA on a 4.0 scale with credit hour weighting.
Estimate how long a game, video, or software file download will take based on your internet connection speed (Mbps).
In everyday modern life, we make dozens of fast numerical decisions—from dividing the dinner check and estimating sales tax at checkout, to calculating compound interest on our monthly savings or adjusting recipe ingredients for family dinners.
Unlike generic calculators that only work in US dollars and US sales tax, Wishoo lets you set your home country (US, UK, India, Canada, Australia, Germany, France, Japan, UAE) to automatically adapt local tax rates (VAT, GST, Sales Tax) and currencies.
Calculations happen instantly in your browser as you type. Your personal numbers, financial data, and health stats are never uploaded or stored on any server.
Whether you are standing in a supermarket aisle on your phone or planning monthly budgets on your widescreen desktop, enjoy clean layouts, tap-friendly controls, and easy copy-to-clipboard results.