计算器

Count how many groups can be formed when order does not matter.

Count how many ordered arrangements are possible when selecting r items from n items.

Calculate DTI percentage for mortgage prep, loan screening, and budgeting scenarios.

Work out an affordable rent target from gross monthly income and your preferred rent percentage.

Calculate right-triangle hypotenuse length for geometry, construction checks, 课堂作业, and layout planning.

Estimate fuel used and trip cost for commuting, road trips, delivery routes, and driving budget checks.

计算 GCD, 液晶模组, 以及多个整数的简化比率.

根据跑步的距离和时间计算配速和速度, 步行, 和赛事策划.

以复利估算未来储蓄增长, 每月存款, 以及选定的时间段.

Estimate simple interest, total interest, and the final amount using principal, annual rate, 和岁月.