Ferramentas online gratuitas

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

Ferramentas científicas

Lab Timer

Countdown and stopwatch timer for lab work. Presets for 1, 5, 10, 15, 30, and 60 minute incubations. Lap times, audio alert on completion. Free, runs in your browser.

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Ferramentas matemáticas

Data Plotter

Plot data as line, scatter, or bar charts from x,y pairs or separate columns. Enter lab results, calibration curves, or trial data — get an instant SVG chart with axis labels. Free, browser-based.

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Ferramentas matemáticas

Graph Generator

Graph mathematical functions y = f(x) instantly. Enter expressions like sin(x), x^2, exp(x), or multiple functions — get an SVG plot with axes, grid, and auto-scaling. Free, browser-based.

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Ferramentas científicas

Experiment Randomizer

Randomize experiment run order, assign samples to treatment groups, or shuffle replicate blocks. Fisher–Yates shuffle with optional seed for reproducible lab randomization. Free, browser-based.

Used 0 timesUpdated never

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