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PercentMaster is a free, mobile-friendly collection of calculators and small utilities—percentages, interest, tips, discounts, loans, tax estimates, BMI, GPA, salary, and more—plus helpers like JSON format, Base64, UUIDs, image compression, and unit/date tools. Everything runs in the browser with readable explanations and optional guides, so you get the number and the logic behind it.
PercentMasterFree calculators & utilities in your browser - no signup
Khader Valileft a comment
Hey PH, we built PercentMaster because we were tired of calculator sites that hide the math, spam ads, or ask you to sign up for something simple. It’s one place for percentages through loans/tips/tax-style estimates, plus small dev utilities (JSON, Base64, UUIDs, image compress) that never upload your data. Would love feedback: which calculator do you use most, and what’s missing?
PercentMasterFree calculators & utilities in your browser - no signup