About ToolNest

ToolNest is a growing collection of free online calculators and everyday tools. We build tools we wanted ourselves: fast, accurate, ad-supported but uncluttered, and private by design.

Our principles

• Accuracy — every calculator uses standard, published formulas and explains them.
• Privacy — calculations run in your browser; we do not store what you type.
• Free — the site is supported by advertising so the tools stay free for everyone.

Results are estimates for planning and education. For major financial, medical or legal decisions, consult a qualified professional.