Free calculators for everyday questions — percentages, BMI, TDEE, GPA, age, tips, compound interest, word count, solar savings, AI ROI, EV costs, and more. No sign-up, no cost, instant results.
Convert any hourly wage to annual, monthly, weekly, and daily pay instantly.
Calculate NowCalculate overtime pay for any number of extra hours worked above your standard 40-hour week.
Calculate NowFind out how much to save each month to reach your financial goal by a target date.
Calculate NowSee how your money grows over time with compound interest. Get a full year-by-year breakdown.
Open ToolCalculate your monthly mortgage payment, total interest paid, and full repayment cost for any home loan.
Open ToolCalculate your monthly loan repayment, total interest, and full repayment schedule for any personal or car loan.
Open ToolCalculate your recommended daily water intake based on weight, activity level, and climate.
Calculate NowConvert any hourly wage to annual, monthly, weekly, and daily pay instantly.
Calculate NowCalculate overtime pay for any number of extra hours worked above your standard 40-hour week.
Calculate NowFind out how much to save each month to reach your financial goal by a target date.
Calculate NowSee how your money grows over time with compound interest. Get a full year-by-year breakdown.
Open ToolDetermine if your AI tool subscription is worth it by calculating ROI based on time saved.
Open ToolFind out how many years it takes for solar panels to pay for themselves and estimate lifetime savings.
Open ToolCompare the total cost of owning an electric vehicle vs a gas car. See fuel savings and break-even timeline.
Open ToolCalculate your monthly mortgage payment, total interest paid, and full repayment cost for any home loan.
Open ToolCalculate your monthly loan repayment, total interest, and full repayment schedule for any personal or car loan.
Open ToolCalculate your recommended daily water intake based on weight, activity level, and climate.
Calculate NowEstimate your one-rep max (1RM) for any lift using the Epley, Brzycki, or Lombardi formula.
Calculate NowCalculate your ideal body weight range using the Hamwi, Devine, and Miller formulas based on height and sex.
Calculate NowCalculate your Total Daily Energy Expenditure and BMR. Get calorie targets for weight loss or gain.
Open ToolCalculate your Body Mass Index with metric or imperial units. See your BMI category and scale visualization.
Open ToolCalculate your daily calories, protein, carbs, and fat targets based on your body stats, activity level, and goal.
Open ToolEstimate your body fat percentage using the US Navy tape method. Enter height, neck, and waist measurements for an instant result.
Open ToolFind the best times to wake up or go to bed based on 90-minute sleep cycles. Wake up refreshed, not groggy.
Open ToolCalculate your running pace, finish time, or distance. See projected race finish times for 5K, 10K, half marathon, and marathon.
Open ToolEstimate how long it takes to read or speak any number of words at different speeds.
Calculate NowCount words, characters, sentences, and paragraphs instantly. Get reading and speaking time estimates.
Open ToolConvert text between UPPER CASE, lower case, Title Case, Sentence case, camelCase, and snake_case.
Open ToolCalculate the square root, cube root, or any nth root of a number instantly.
Calculate NowCalculate any base raised to any power (exponent). Supports decimal and negative exponents.
Calculate NowCalculate the factorial of any whole number from 0 to 12 instantly.
Calculate NowCalculate percentages instantly — find X% of a number, percentage change, or increase/decrease by a percentage.
Open ToolCalculate your college GPA on a 4.0 scale. Add courses, grades, and credit hours for instant results.
Open ToolFind the minimum exam score needed to reach your desired course grade. Enter current grade and exam weight.
Calculate NowFind out how much you spend on coffee per year and whether switching to home brew would save you money.
Calculate NowCalculate how much your pet food costs per day, month, and year based on pack size and price.
Calculate NowCalculate how many litres of paint you need to cover walls and ceilings, accounting for doors and windows.
Calculate NowCalculate how many tiles you need for any floor or wall area, with a wastage buffer.
Calculate NowFind your exact age in years, months, and days. See birthday countdown, zodiac sign, and total days lived.
Open ToolCalculate the volume of concrete needed for any slab, footing, or pour. Get cubic metres, cubic yards, and number of bags.
Open ToolEvery calculation runs directly in your browser — no waiting, no server round-trips. Get your answer the moment you click Calculate.
From everyday math like percentages and tips to bigger decisions like AI ROI, solar break-even, mortgage payments, and EV cost savings — plus text tools, GPA calculators, and calorie tracking.
Every tool on WorthIt Tools is completely free. No account required, no email gate, no premium tier. Just open the tool and use it.
Whether you need to check a percentage, convert text case, count words, calculate a tip, figure out your daily calories, compute your GPA, or decide if solar panels are worth it — Worth It Tools gives you a clean, focused calculator with no distractions. Stop guessing. Start calculating.
Use our Percentage Calculator to find X% of a number, calculate percentage change between two values, or work out what percentage one number is of another — all without doing the math yourself.
Paste or type any text into the Word Counter and it instantly counts words, characters (with and without spaces), sentences, and paragraphs. It also estimates reading time and speaking time.
Enter your date of birth in the Age Calculator and it shows your exact age in years, months, and days — along with your next birthday countdown, zodiac sign, and total days you've been alive.
Enter your bill amount and select a tip percentage in our Tip Calculator. It instantly shows the tip amount, total bill, and per-person split if you're sharing the bill with others.
Yes — every tool on WorthIt Tools is completely free. No account, no email address, no hidden paywall. The site is supported by ads, so the tools stay free for everyone.
All calculations use standard formulas. Simple tools like the percentage and word counter are exact. The TDEE calculator uses the Mifflin-St Jeor equation. Estimation tools like solar and EV calculators use real-world averages and clearly state their assumptions.