Free Online Calculators and Tools

Estimate monthly mortgage payments with taxes, insurance, PMI, and HOA fees.

Compare renting and buying using mortgage equity, transaction costs, housing expenses, appreciation, and investment opportunity cost.

Calculate monthly loan payments, total interest, and repayment cost.

Estimate salary, hourly pay, monthly income, and simple paycheck-style breakdowns.

Estimate driving costs per day, active week, average month, and year from fuel, parking, tolls, and wear.

Estimate regular pay, overtime pay, and total gross pay from hours, rate, and multiplier.

Estimate car loan payments, interest, and total vehicle financing cost.

Calculate sales tax, before-tax price, and final total.

Calculate tips, split bills, and estimate per-person totals quickly.

Convert amounts between currencies for travel, shopping, and planning.

Calculate sale price, discount amount, and final price after savings.

Compare product prices by unit, weight, volume, quantity, and package size to find the better value.

Calculate percentages, increases, decreases, and percentage differences.

Estimate how much house you may be able to afford from income, debts, down payment, mortgage rate, and U.S. or Canadian qualification assumptions.

Calculate VAT-inclusive and VAT-exclusive prices quickly.

Build low, expected, and high renovation budgets from your own project items, rates, quotes, and costs.

Estimate moving costs from service quotes, labor, transportation, packing, storage, fees, and contingency.

Estimate small, medium, large, and wardrobe boxes by home size and belongings level.

Compare 5x5 to 10x30 storage units for studio through five-plus-bedroom contents, with dimensions and roomier options.

Estimate appliance energy use and running cost from power, runtime, quantity, and your electricity rate.

Estimate tile quantity, waste allowance, boxes needed, and grout requirements.

Estimate wallpaper rolls, wall area, waste allowance, and paste packs.

Plan curtain rod width, fullness, panel dimensions, finished length, and ready-made panel quantities.

Calculate area rug size for living rooms, bedrooms, dining tables, hallways, and custom shapes. Compare stock sizes and plan a rug pad.

Estimate paint needed, containers to buy, and approximate project cost.

Estimate flooring or carpet area, waste, materials, installation, and total cost.

Estimate drywall area, sheets, waste allowance, and approximate material cost.

Estimate fence length, panels, posts, gates, materials, and approximate cost.

Estimate daily calories and dry, wet, or mixed food portions for your cat.

Estimate litter needs, how long supplies may last, and approximate ongoing cost.

Estimate daily calories, food portions, package duration, and feeding costs.

Estimate a parrot's life stage and human-age equivalent by species.

Estimate practical cage and housing dimensions from adult body length, wingspan, bird count, and planning goal.

Estimate terrarium length, width, height, floor area, and volume from species and expected adult length.

Estimate a reptile's human-age equivalent and life stage by species.

Estimate calories burned by walking time, distance, steps, terrain, or grade.

Calculate walking time from distance and speed, pace, or steps and cadence.

Calculate walking pace and speed from distance and elapsed time, with an optional population reference.

Convert steps to miles or kilometres from measured, entered, or height-estimated step length, or estimate steps from distance.

Estimate trip fuel cost based on distance, mileage, and fuel price.

Estimate driving time with planned stops and an optional arrival time.

Estimate EV charging time from battery capacity, current and target charge, charger power, and an optional vehicle charging limit.

Estimate total travel budget, per-person cost, and daily spending from transportation, lodging, food, activities, fees, and contingency.

Estimate total hotel cost from room rates, nightly fees, taxes, one-time fees, and parking.

Estimate the total rental cost and effective cost per day, including fees, insurance, fuel, parking, and tolls.

Split shared travel costs across people fairly and quickly.

Calculate age from a birth date in years, months, and days.

Add or subtract days, weeks, months, or years from a date.

Compare times across different time zones quickly.

Calculate daily work time, subtract breaks, handle overnight shifts, and estimate weekly hours.

Count business days between dates or add and subtract workdays while excluding weekends and custom holidays.