Finance calculators

Compare loans, savings and investments, check discounts and pricing, or convert gross pay and estimate commission. Review formulas, examples and assumptions alongside each result.

Loan Calculator

Estimate fixed-rate payments, interest, and repayment balances.

Mortgage Calculator

Separate loan payments from taxes, insurance, and housing costs.

Interest Calculator

Compare simple and compound balances under matching inputs.

Simple Interest Calculator

Calculate fixed-principal interest with explicit time units.

Compound Interest Calculator

Project compounded balances with deposits and timing choices.

Savings Calculator

Find monthly savings needed to reach a target balance.

Investment Calculator

Compare return assumptions, fee drag, and purchasing power.

ROI Calculator

Measure total return and profit after entered costs.

Discount Calculator

Find sale prices, savings, successive discounts and original prices.

Markup Calculator

Compare selling price, gross profit, markup and margin.

Commission Calculator

Calculate flat or tiered commission with optional base pay.

Salary Calculator

Convert gross pay between hourly and annual pay periods.

Clear tools for everyday decisions

Every NumUtility calculator is designed for quick use and careful understanding. Your entries stay in your browser, results update immediately, and each tool includes the formula, examples, and answers to common questions.

Choose a tool above, or visit our number guides to learn the method behind the result.