Calculator Tools

13 free browser tools

Run quick business, marketing, date, finance, and unit calculations with copyable results.

Convert values among common units for length, weight, and temperature with immediate results and summary details.

Solve common percentage questions with three modes: X% of Y, X is what % of Y, and change Y by X%.

Compute a simplified ratio from a source width and height and scale one target dimension to the matching value.

Generate random values from a min and max range in-browser, support integer or decimal mode, and control result count.

Calculate date differences, deadlines, return windows, renewal dates, and simple calendar math without uploading anything.

Work out sale prices, coupon savings, tax impact, and final checkout totals for quick purchase decisions.

Calculate tips, split a bill, and copy a simple payment summary for restaurants, delivery, and shared expenses.

Estimate monthly payments for mortgages, car loans, equipment purchases, or simple installment planning.

Draft a clean invoice summary for small jobs, freelance work, and quick payment requests without creating an account.

Work out margin, markup, and profit for products, services, quotes, and quick pricing decisions.

Measure campaign return from spend, revenue, orders, and optional cost of goods for quick marketing checks.

Convert ad campaign metrics into CPM, CPC, and CTR so you can compare media buys quickly.

Calculate hours and minutes between start and end times for work logs, meetings, shifts, and simple scheduling.