🗓️ Date & Other

🕐 Time Zone Converter Convert a date and time between world time zones, with the exact time difference. 🌐 IP Subnet Calculator Calculate the network, broadcast, mask, host range and host count for any IPv4 address and CIDR. 🔐 Base64 & URL Encoder / Decoder Encode or decode text with Base64 and URL encoding, right in your browser. 🎂 Age Calculator Calculate your exact age in years, months and days. 📅 Date Difference Calculator Count the days, weeks and months between two dates. 📏 Length Converter Convert between meters, kilometers, miles, feet and inches. 🌡️ Temperature Converter Convert between Celsius, Fahrenheit and Kelvin. 🚀 Speed Calculator Calculate average speed from distance and time. 🔠 Roman Numeral Converter Convert numbers to Roman numerals (1–3999). 📐 Height Converter Convert height between centimeters and feet/inches. ⛽ Fuel Cost Calculator Estimate the fuel cost of a trip. 🧪 Density Calculator Calculate density, mass or volume. 🚙 Gas Mileage Calculator Calculate your vehicle's fuel economy. ➕ Day Counter Calculator Add or subtract days from a date. ⚖️ Weight Converter Convert between kilograms, grams, pounds and ounces. 🏗️ Square Footage Calculator Calculate the area of a room in square feet and meters. ❄️ BTU Calculator (AC) Estimate the cooling BTU needed for a room. 🎓 GPA Calculator Calculate your grade point average from grades and credits. ⏱️ Hours Calculator Calculate hours worked between a start and end time. 😴 Sleep Calculator Find the best bedtimes for your wake-up time using sleep cycles. ❤️ Love Calculator A fun compatibility score between two names. 🥶 Wind Chill Calculator Calculate how cold it feels with wind (wind chill). 🥵 Heat Index Calculator Calculate how hot it feels with humidity (heat index). ⏰ Time Calculator Add or subtract hours, minutes and seconds. 🐎 Horsepower Calculator Calculate horsepower from torque and RPM. 🧱 Concrete Calculator Calculate the concrete volume needed for a slab. 🔲 Tile Calculator Find how many tiles you need for a floor or wall. ⚡ Ohm's Law Calculator Solve for voltage, current, resistance or power. 💡 Electricity Cost Calculator Estimate the running cost of an electrical appliance. 💧 Dew Point Calculator Calculate the dew point from temperature and humidity. 🪜 Stair Calculator Calculate the number of steps and rise for a staircase. 🪨 Gravel Calculator Calculate the volume and weight of gravel needed. 🎰 Random Number Generator Generate random numbers within a range. 🎲 Dice Roller Roll any number of dice with any number of sides. 🔐 Password Generator Generate a strong random password. 📅 Day of the Week Calculator Find the day of the week for any date. 🌱 Mulch Calculator Calculate how much mulch you need for a garden bed. 🏠 Roofing Calculator Estimate roof area from the building footprint and pitch. 📝 Grade Calculator Find the final exam score you need for a target grade. 🧪 Molarity Calculator Calculate the molar concentration of a solution. ⏳ Time Duration Calculator Find the duration between two dates and times. 🚗 Mileage Reimbursement Calculator Calculate travel reimbursement from distance and rate. 🎨 Paint Calculator Find how much paint you need for a room. 🔲 Flooring Cost Calculator Estimate the cost to floor a room. 🏷️ Unit Price Calculator Find the price per unit to compare products. 🛞 Tire Size Calculator Calculate the overall diameter of a tire from its size. 🧱 Wallpaper Calculator Find how many rolls of wallpaper you need. 🖼️ Aspect Ratio Calculator Simplify a width-to-height ratio for screens and images. ⚡ Voltage Drop Calculator Estimate the voltage drop along a cable run. 👟 Steps to Distance Calculator Convert step count into distance and calories. 🥄 Cooking Volume Converter Convert between cups, milliliters, tablespoons and teaspoons. 🚀 Speed Converter Convert between km/h, mph, m/s and knots. 💾 Data Storage Converter Convert between bytes, KB, MB, GB and TB. 🗺️ Area Converter Convert between square meters, square feet, acres and hectares. 🌡️ Pressure Converter Convert between Pa, bar, psi, atm and mmHg. ⚡ Energy Converter Convert between joules, calories, watt-hours and BTU. 🧴 Volume Converter Convert between liters, milliliters and gallons. 📐 Angle Converter Convert between degrees, radians and gradians. 🔌 Power Converter Convert between watts, kilowatts, horsepower and BTU/h. ⛽ Fuel Consumption Converter Convert between L/100km, MPG and km/L. 📶 Download Time Calculator Estimate how long a file takes to download. 🔧 Torque Converter Convert between newton-meters, pound-feet and kg-meters. 💪 Force Converter Convert between newtons, pound-force and kilogram-force. 🔤 Number to Words Converter Spell out a number in words, in your chosen language. 🏃 Pace Converter Convert running pace between per-kilometer and per-mile. 🧱 Brick Calculator Estimate how many bricks you need for a wall. ⏱️ Time to Decimal Calculator Convert hours and minutes into decimal hours. 🌊 Wavelength Calculator Calculate the wavelength of a wave from its frequency. 🌙 Weight on the Moon Calculator Find how much you would weigh on the Moon and Mars.