Date Duration Calculator - Online Calendar & Workdays
Calculate the exact number of days, weeks, months, and workdays between two dates. Visual calendar highlights. Perfect for projects.
UD5 Toolkit
Add up hours and minutes from multiple work intervals or direct duration inputs. Ideal for timesheets, freelance projects, and shift work.
Enter start and end times. If end time is earlier than start, it's assumed to be the next day.
Manually add hours and minutes (e.g., overtime, travel time).
Calculate the exact number of days, weeks, months, and workdays between two dates. Visual calendar highlights. Perfect for projects.
Calculate total work hours and pay from time-in/out entries. Supports overtime and breaks. Generate a printable timesheet. All local.
Enter clock-in/out times for each day and see total hours worked, overtime. Calculate weekly pay based on hourly rate. Local storage.
Enter regular hours, hourly rate, and overtime hours to calculate total weekly pay. Follows standard 1.5x rule.
Convert minutes to decimal hours and vice versa. Essential for billing and payroll. Instant conversion with a handy chart.
Enter appliance loads and battery capacity to estimate how long your RV can run without recharging. Local simulation.
Convert between all major length units: meter, kilometer, mile, yard, foot, inch, and more. Instant results in a clean interface. No registration.
Enter wallet size and get the exact length of duct tape strips needed to build a sheet. DIY crafting.
Enter total balance and limit to see utilization percentage. See how it affects credit score bands.
Estimate calories burned for various activities like running, cycling, swimming based on duration and body weight. Informational and motivational.
Select an activity, enter your weight and duration, and see the estimated calories burned. Based on MET values.
See how extra monthly or lump‑sum payments reduce your mortgage term and total interest. Dynamic chart. All local calculation.
Log daily sleep to see cumulative sleep debt or surplus over weeks. Visualizes chronic sleep loss trends. Stores data locally in your browser only.
Estimate monthly mortgage payments with amortization schedule. Input loan amount, interest rate, and term. All calculations performed securely on your device.
Calculate your Basal Metabolic Rate using the Mifflin‑St Jeor equation. Know how many calories you burn at rest. All data private.
Estimate due date from last menstrual period or conception date. Uses Naegele's rule and shows week-by-week milestones. Local calculator for informational use.
Measure your waist‑to‑hip ratio and learn about associated health risks. WHR interpretation. Educational only.
Estimate ovulation day and fertility window from last menstrual period. Displays probable conception dates. Informational only; processes locally in browser.
Fill out a clean budget worksheet with income and expense categories. See totals and print. No data stored.
Calculate power supply and controller requirements for any length of LED strip (5050, 2835, WS2812B). Prevents overloading. Local only.
For any latitude and date, calculate the exact daylight hours. See golden hour. Useful for gardening and travel.
Paste an SVG path and calculate its total length. Useful for stroke‑dasharray animations and drawing effects.
Enter your body measurements and get approximate bike frame size, saddle height, and reach. For cyclists. Local.
Simple interface for kids to log reading minutes and pages. Add book titles. Print weekly report. Local.
Check your Body Mass Index using standard or metric units. Get a health category analysis instantly. Educational purpose only; data stays private.
Project your retirement savings growth with monthly contributions, employer match, and CAGR. Interactive chart. Financial data stays on your device.
Select meat type and enter weight to get recommended cooking time and temp. Built-in timer with alarm.
Approximate monthly child support obligation based on both parents incomes and number of children. Uses simplified model for educational reference. Not legal advice.
Find the optimal go‑to‑sleep or wake‑up times based on 90‑min sleep cycles. Wake up between REM cycles and feel refreshed.
Enter rolls remaining and household size to estimate weeks of supply. A humorous yet practical aid.