Kostenlose Online-Tools
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
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
Scientific Calculator
Perform basic and scientific calculations with trigonometry, logarithms, powers, and degree or radian mode.
Used 0 times•Updated never
Tip Calculator
Calculate tip amount, total bill, and fair split per person with quick percentage presets.
Used 0 times•Updated never
SKU Generator
Generate product SKU codes from brand, category, product, color, size, and variant fields with custom separators and sequences.
Used 0 times•Updated never
Unsloth Dataset Builder
Unsloth dataset builder free — create fine-tuning JSONL for Alpaca, chat messages, tool calls, or raw text. Import, validate, split train/eval, export.
Used 0 times•Updated never
Molar Mass Calculator
Molar mass calculator free — parse chemical formulas like H2O or Ca(OH)2 and get g/mol with an element breakdown. Browser-based, instant, no signup.
Used 0 times•Updated never
Mole Calculator
Mole calculator free — convert between grams, moles, and particles using molar mass. Instant chemistry stoichiometry in your browser, no signup.
Used 0 times•Updated never
Solution Concentration Calculator
Solution concentration calculator free — molarity, mass/volume, and dilution (C1V1=C2V2). Chemistry lab prep in your browser, no signup.
Used 0 times•Updated never
Molarity Calculator
Molarity calculator free — find M, moles, or volume with M=n/V. Convert mass to molarity using formula lookup. Instant chemistry in your browser.
Used 0 times•Updated never