Free Online Calculators

• ├── Age Calculator Free age calculator to find your exact age in years, months, and days from your date of birth, on any past or future date. See the day you were born, your zodiac sign, a birthday countdown, and the difference between two dates. Runs in your browser.
• ├── Aspect Ratio Calculator Free online aspect ratio calculator. Calculate ratios from width and height, or drag and drop an image to instantly find its exact aspect ratio locally.
• ├── Auto Loan Calculator Free auto loan calculator with sales tax and trade-in: find your monthly car payment, total interest, amount financed and a full amortization schedule for 60, 72 or 84 month terms. Works as a car loan and car payment calculator. Runs in your browser.
• ├── Calorie and TDEE Calculator Free calorie and TDEE calculator. Find your BMR, maintenance calories, and daily targets to lose, maintain, or gain weight, plus a balanced macro split. Metric and imperial. Runs in your browser.
• ├── Chmod Calculator Free online chmod calculator. Instantly convert Linux file permissions between octal, symbolic, and visual checkboxes. Copy the exact chmod command you need.
• ├── Compound Interest Calculator Free compound interest calculator: see how your savings grow with regular contributions or withdrawals, daily, monthly, yearly or continuous compounding, total interest and a year by year schedule. Runs in your browser.
• ├── GPA Calculator Free GPA calculator to work out your semester and cumulative GPA from your grades and credit hours. Handles weighted and unweighted grades, 4.0 and 5.0 scales, and the GPA you need next term to hit a target. Runs in your browser.
• ├── Grade Calculator Free grade calculator to find your weighted course grade, the score you need on a final exam, and a test score from the number of questions wrong. Letter or percentage input, instant results, runs in your browser.
• ├── IP Subnet Calculator Free online IP Subnet Calculator. Instantly calculate network addresses, broadcast addresses, usable host ranges, and CIDR masks.
• ├── Loan Calculator Free loan calculator: find your monthly payment, total interest, payoff date and full amortization schedule. Add extra payments and fees to see real APR. Runs locally in your browser.
• ├── Mortgage Calculator Free mortgage calculator: estimate your monthly payment with property taxes, home insurance, PMI and HOA, plus total interest, a full amortization schedule, and a 28/36 affordability check. Runs in your browser.
• ├── Multiple Calculators Free online multiple calculators. Run two calculators side by side at once, view calculation steps and history, and process everything locally in your browser.
• ├── Net Worth Calculator Free net worth calculator. Add up your assets and subtract your liabilities to see your net worth, debt-to-asset ratio, liquid versus illiquid breakdown, a future projection, and where you land by age. Runs in your browser.
• ├── PayPal Fee Calculator Free online PayPal fee calculator. Calculate exactly how much PayPal charges for goods & services, international transfers, and see exactly how much you need to invoice to get paid your full amount.
• ├── Percentage Calculator Free percentage calculator: find what percent of a number, a percentage increase or decrease, percent off a price, and the percent difference between two numbers. Instant results that show the work. Runs in your browser.
• ├── Profit Margin Calculator Free online profit margin and markup calculator. Instantly calculate revenue, cost, gross margin, and net profit for e-commerce and dropshipping.
• ├── PX to REM Converter Free online PX to REM and REM to PX calculator. Instantly convert CSS units based on any root font size. Includes dynamic lookup tables and quick presets.
• ├── Square Footage Calculator Free square footage calculator that adds up multiple rooms and areas at once, including rectangles, triangles, and circles. Switch between feet, inches, yards, meters, and centimeters, add a waste allowance for flooring, and get the total in square feet, square yards, and square meters. Runs in your browser.
• ├── Standard Deviation Calculator Free standard deviation calculator. Paste your numbers to get the sample and population standard deviation, variance, mean, and a clear step by step of the math. Runs in your browser.
• ├── Time Duration Calculator Free online time duration calculator. Instantly calculate hours and minutes between times, days between dates, and decimal work hours for payroll.
• ├── Tip Calculator Free tip calculator to work out how much to tip and split the bill per person. Add tax, tip on the pre-tax or post-tax amount, round to whole dollars, and share a link. Runs in your browser.
• ├── Unix Timestamp Converter Free online Unix Timestamp and Epoch converter. Instantly convert seconds, milliseconds, and dates to UTC, Local Time, ISO 8601, and Discord tags.
• └── Water Intake Calculator Free water intake calculator. Find how much water to drink a day based on your weight, exercise, and climate. Results in litres, millilitres, cups, and ounces. Runs in your browser.