मुफ़्त ऑनलाइन टूल
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
Expense Tracker
Log daily expenses by category, see spending totals, and review a breakdown — saved in your browser.
Used 2 times•Updated 32 minutes ago
Scientific Calculator
Perform basic and scientific calculations with trigonometry, logarithms, powers, and degree or radian mode.
Used 2 times•Updated 6 minutes ago
Molecular Formula Calculator
Molecular formula calculator free — find true formula from empirical formula and molar mass, or composition plus experimental M. No signup.
Used 2 times•Updated 5 minutes ago
Boyle's Law Calculator
Boyle's law calculator free — solve P1V1=P2V2 for pressure or volume at constant temperature. atm, kPa, L, mL. No signup.
Used 2 times•Updated 39 minutes ago
Population Growth Calculator
Calculate population growth with exponential and logistic models — solve for N, growth rate r, time, or N₀ with projections and doubling time. Free, browser-based.
Used 2 times•Updated 40 minutes ago
Phylogenetic Tree Generator
Build phylogenetic trees from distance matrices, aligned DNA sequences (UPGMA), or Newick strings — SVG diagram, ASCII tree, and export. Free, browser-based.
Used 2 times•Updated 6 minutes ago
Vector Calculator
Compute 2D and 3D vector operations — add, subtract, dot product, cross product, magnitude, unit vector, angle, and projection — with steps.
Used 2 times•Updated 2 minutes ago
GCD Calculator
Find the greatest common divisor (GCD) and LCM of two or more positive integers with Euclidean algorithm steps and prime-factor method.
Used 2 times•Updated 33 minutes ago
Statistics Calculator
Compute mean, median, mode, standard deviation, variance, quartiles, range, and more from any dataset with step-by-step formulas.
Used 2 times•Updated 42 minutes ago
Star Distance Calculator
Calculate star distance from parallax or magnitude. Convert between parsecs, light-years, AU, and km. Free, instant, browser-based astronomy tool.
Used 2 times•Updated 43 minutes ago
Soil Density Calculator
Calculate soil bulk density, moisture content, porosity, and void ratio from sample mass and volume. Supports metric (g, cm³) and imperial (lb, ft³). Free, browser-based.
Used 2 times•Updated 9 minutes ago
Used 1 times•Updated 41 minutes ago