Science Tools – Small Tools. Big Help.

Welcome to SmallToolsOnline.com — your go-to toolkit for performing quick and accurate scientific calculations and conversions. Our collection of smart browser-based science tools helps you convert units, calculate formulas, analyze data, and explore scientific concepts — all without installing any software or sending your data anywhere.

From simple unit converters and molecular weight calculators to advanced physics formulas, chemistry tools, and astronomy calculators, every tool runs directly in your browser using fast JavaScript processing.

Whether you're a student studying science, a teacher preparing lessons, or a researcher performing calculations — Small Tools Online helps you do it faster, smarter, and safer.

All Science Tools

det
Matrix Determinant Calculator
Compute the determinant of a numeric matrix in the browser.
inv
Matrix Inverse Calculator
Calculate the inverse of a given matrix online.
Ax=b
Solve Linear System
Solve for x in A x = b using numeric methods in browser.
FFT
Fourier Transform Tool
Compute discrete Fourier transform (DFT) of a signal online.
R²
Statistical Regression Calculator
Perform linear regression and find R², slope, intercept in browser.
Probability Distribution Visualiser
Visualise normal, binomial, Poisson distributions interactively.
λ
Matrix Eigenvalue Calculator
Find eigenvalues and eigenvectors of a matrix in browser.
Curve Fitting Tool
Fit polynomial/regression curves to data points online.
Signal Filtering Tool
Apply low-pass, high-pass filters to signals in browser.
a+bi
Complex Number Calculator
Perform arithmetic of complex numbers (a+bi) online.
Heatmap Generator
Generate heatmap from tabular data inside browser.
MC
Monte Carlo Simulation Tool
Run Monte Carlo experiments (random sampling) on data in browser.
∫
Numeric Integration Calculator
Compute definite integrals using browser-based numeric methods.
dy/dx
Differential Equation Solver
Solve ordinary differential equations (ODEs) in browser.
H₀
Statistical Hypothesis Tester
Perform t-tests, chi-square tests and more in browser.
Data Normalization Tool
Normalize dataset columns (z-score, min-max) online.
PCA
Principal Component Analysis (PCA) Tool
Perform PCA on numeric dataset directly in browser.
3D Surface Plotter
Create interactive 3D surface plots in browser.
Waveform Generator
Generate sine, square, sawtooth waveforms interactively.
Fractal Generator
Generate fractal patterns (Mandelbrot, Julia) in-browser.