Calculator Tools
13 free browser tools
Run quick business, marketing, date, finance, and unit calculations with copyable results.
Unit Converter
Convert values among common units for length, weight, and temperature with immediate results and summary details.
Percentage Calculator
Solve common percentage questions with three modes: X% of Y, X is what % of Y, and change Y by X%.
Aspect Ratio Calculator
Compute a simplified ratio from a source width and height and scale one target dimension to the matching value.
Random Number Generator
Generate random values from a min and max range in-browser, support integer or decimal mode, and control result count.
Date Calculator
Calculate date differences, deadlines, return windows, renewal dates, and simple calendar math without uploading anything.
Discount Calculator
Work out sale prices, coupon savings, tax impact, and final checkout totals for quick purchase decisions.
Tip Calculator
Calculate tips, split a bill, and copy a simple payment summary for restaurants, delivery, and shared expenses.
Loan Payment Calculator
Estimate monthly payments for mortgages, car loans, equipment purchases, or simple installment planning.
Simple Invoice Generator
Draft a clean invoice summary for small jobs, freelance work, and quick payment requests without creating an account.
Profit Margin Calculator
Work out margin, markup, and profit for products, services, quotes, and quick pricing decisions.
ROAS Calculator
Measure campaign return from spend, revenue, orders, and optional cost of goods for quick marketing checks.
CPM and CPC Calculator
Convert ad campaign metrics into CPM, CPC, and CTR so you can compare media buys quickly.
Time Duration Calculator
Calculate hours and minutes between start and end times for work logs, meetings, shifts, and simple scheduling.