All calculators, organized by what you are trying to figure out.

Start with the core percentage tool, then move into finance, real estate, freelance, or education calculators when the job gets more specific.

Percentage

Core percentage work for discounts, markup, reverse percentages, change over time, and quick number checks.

Calculate percentages, percentage change, markup, discounts, reverse percentages, and simple compounding from one clear tool.

Money-focused calculators for loans, investment growth, rates, present value, and related planning work.

Run compound interest, loan payment, ROI, APR, investment growth, and present value calculations with practical breakdowns.

Project investment growth across different compounding schedules and review the year-by-year balance change.

Property-focused tools for mortgage payments, commissions, appreciation, rental yield, and tax estimates.

Estimate commissions, appreciation, mortgage payments, rental yield, ROI, and property tax without opening a spreadsheet.

Practical support tools for freelancers, students, and anyone pricing work or tracking academic results.

Estimate hourly rates, project pricing, profitability, and tax impact for independent work and client quotes.

Calculate weighted grades and GPA with editable rows for assignments, exams, credits, and course grades.