Collections
Curated sets of related tools, grouped by the problem they solve.
- Percentage Calculators
Every free Toolphy percentage tool in one place: percent of a number, increase, decrease, difference, X out of Y, percent off and more.
- Finance Calculators
Free finance calculators for loans, mortgages, savings, retirement and investing. Estimate payments, interest and growth entirely in your browser.
- Text Tools
Free online text utilities to count words and characters, convert case, remove duplicates, compare text and generate slugs — all in your browser.
- Developer Tools
Free, private developer tools: format and validate JSON, convert JSON/CSV, encode Base64, decode JWT and hash text — all client-side.