Shoe & Clothing Size Converter International size charts never agree. A men’s US 10 shoe is a UK 9.5, an EU 44, and a 28-centimeter footprint in Japan. A women’s US 6 top might map to a 34 in the EU, a 10 in the UK, and a small letter-sized S everywhere else. Rather than ...
Try the Tool »Sprint Velocity & Capacity Calculator Plan your next sprint with math, not guesswork. Feed in your velocity history, team size, PTO, and focus factor, and get an evidence-based commitment range in story points and hours. How to Use Enter your team size and sprint length in working days. Set productive hours per person per day ...
Try the Tool »Solar Panel Output Calculator Estimate the real-world energy output of a solar panel array in daily, monthly, and annual kWh, along with projected savings, CO₂ offset, and a battery size recommendation. Unlike vague AI-generated estimates, this tool accounts for system losses and panel degradation over a 25-year lifetime so you get a realistic picture instead ...
Try the Tool »Screen Size Comparison Calculator Compare two screens side by side at true physical scale. Enter a diagonal size and pixel resolution for each display and instantly see the accurate scaled visual, PPI (pixels per inch), pixel pitch, viewing area, aspect ratio and density category for both screens — together with a plain-language summary of which ...
Try the Tool »Stair Rise & Run Calculator Design a code-compliant staircase from a total floor-to-floor rise and an optional total run. The calculator picks the optimal step count, computes each riser height and tread depth, and flags whether the result passes IRC residential or IBC commercial limits. It also draws a side-view SVG diagram and reports the ...
Try the Tool »LLM API Cost Calculator Estimate what an LLM API call will actually cost before you deploy it. Enter the input tokens, output tokens, and your daily call volume, pick a model, and this tool shows you the per-call, per-day, per-month, and per-year spend across OpenAI, Anthropic, Google, and Meta models — using the current published ...
Try the Tool »Paint Coverage Calculator Figure out exactly how much paint to buy before you head to the hardware store. The Paint Coverage Calculator turns your room dimensions into the number of litres or gallons you need and the exact number of cans to buy, with standard deductions for doors and windows, multi-coat support, and a waste ...
Try the Tool »Sales Tax & VAT Calculator Instantly calculate sales tax and VAT on any price. Enter an amount and tax rate to see the pre-tax price, tax amount, and total. The calculator supports both adding tax to a price and removing tax from a tax-inclusive total (reverse VAT), making it useful for invoicing, receipt verification, and ...
Try the Tool »BMR & TDEE Calorie Calculator Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using scientifically validated formulas. Whether you are planning a calorie deficit for weight loss or a surplus for muscle gain, this calculator gives you the precise numbers you need to reach your goals. How to Use Enter your ...
Try the Tool »Date Countdown Calculator The Date Countdown Calculator lets you create a real-time countdown to any future date or event. Watch the days, hours, minutes, and seconds tick away live on screen. You can also see how much time has passed since a past event, count only working days (excluding weekends), and share your countdown with ...
Try the Tool »Working Hours & Overtime Calculator Track your daily work hours, calculate overtime, and estimate gross pay with this free online timesheet calculator. Whether you are a freelancer, shift worker, or manager reviewing timesheets, this tool handles break deductions, configurable overtime thresholds, and multiple overtime multipliers so you get accurate results every time. How to Use ...
Try the Tool »Resistor Color Code Calculator Quickly decode resistor color bands to find resistance values, or enter a resistance value to find the correct color band combination. This calculator supports both 4-band and 5-band resistors and displays an interactive visual diagram with real-time results. How to Use Select whether you have a 4-band or 5-band resistor from ...
Try the Tool »Electricity Cost Calculator Quickly estimate how much electricity any device or appliance costs you per day, week, month, and year. Enter the wattage, usage hours, and your electricity rate to get instant cost breakdowns and CO₂ emission estimates. How to Use Enter your device wattage in watts (check the label on your appliance or its ...
Try the Tool »Side Hustle Income Tax Calculator Estimate your federal taxes on side hustle and gig income with this free calculator. Whether you drive for a rideshare service, freelance on weekends, or sell products online, understanding your tax obligations is essential. This tool calculates self-employment tax (Social Security and Medicare), federal income tax using 2025 brackets, and ...
Try the Tool »1099 vs W2 Income Comparison Calculator Compare your true take-home pay between working as a 1099 independent contractor and a W2 employee. This calculator accounts for self-employment tax, FICA contributions, health insurance costs, retirement contributions, business deductions, and employer benefits to give you an accurate side-by-side comparison. How to Use Enter your annual gross income ...
Try the Tool »Date Calculator The Date Calculator lets you quickly find a future or past date by adding or subtracting days, months, and years from any starting date. Whether you are planning deadlines, calculating due dates, or figuring out milestones, this tool gives you instant results with detailed information about the resulting date. How to Use Select ...
Try the Tool »Hours Calculator Quickly calculate the number of hours and minutes between any two times. Whether you’re tracking work hours, planning schedules, or calculating shift durations, this tool gives you an instant, accurate result. How to Use 1. Enter a Start Time using the time picker or by typing in HH:MM format.2. Enter an End Time ...
Try the Tool »Age Calculator Calculate your exact age down to the day with the Age Calculator. Enter your date of birth and instantly see a complete breakdown of your age in years, months, days, weeks, and hours. Whether you need it for official documents, curiosity, or planning, this tool gives you precise results in seconds. How to ...
Try the Tool »Time Between Dates Calculator Calculate the exact duration between any two calendar dates and times. This tool provides a comprehensive breakdown showing years, months, weeks, days, hours, minutes, and seconds between your chosen dates. Whether you need to know how many days until a deadline, the exact age difference between two dates, or the precise ...
Try the Tool »Geo Distance Calculator Calculate the exact great-circle distance between two geographic coordinates using the Haversine or Vincenty formula. Enter locations as decimal degrees or DMS (degrees, minutes, seconds), get results in kilometers, miles, nautical miles, meters, and feet — plus initial bearing and an interactive map. How to Use Select your input mode (decimal degrees ...
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