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268+ free online tools for PDF, images, SEO, developers, color, and productivity. Fast, browser-based, and private — no signup, no installs, no limits. Search above or browse by category below.
Total tools26810.8K total uses
Categories13Active categories
Most usedJSON Formatter4.1K uses
Recently addedExperiment RandomizerNewest tool
Freelancer Rate Calculator
Calculate the hourly, daily, and project rates you need to hit your income goals after taxes, expenses, and non-billable time.
Used 0 times•Updated never
Timesheet Calculator
Log daily work hours from clock times or direct entries, then calculate weekly totals, overtime, and gross pay.
Used 0 times•Updated never
Expense Tracker
Log daily expenses by category, see spending totals, and review a breakdown — saved in your browser.
Used 0 times•Updated never
ROI Calculator
Calculate return on investment (ROI), net gain, and annualized ROI from your initial investment and returns.
Used 0 times•Updated never
Calories Calculator
Estimate calories burned during workouts and daily activities from your weight, duration, and activity intensity.
Used 0 times•Updated never
Nutrition Calculator
Convert between macronutrient grams and calories, or split a calorie target into protein, carbs, and fat.
Used 0 times•Updated never
Water Intake Calculator
Estimate your daily water needs from body weight, activity level, climate, and exercise duration.
Used 0 times•Updated never
Body Fat Calculator
Estimate body fat percentage using the US Navy circumference method with neck, waist, and hip measurements.
Used 0 times•Updated never
Macro Calculator
Plan daily protein, carbs, and fat from your calorie target or estimated needs, with per-meal macro splits.
Used 0 times•Updated never
Restaurant Profit Calculator
Calculate restaurant net profit, food and labor costs, prime cost ratio, and profit margins from sales and operating expenses.
Used 0 times•Updated never
Time Calculator
Calculate time differences and add or subtract hours, minutes, and seconds from any clock time.
Used 0 times•Updated never