Track the classic escalating weekly savings challenge progress.
Deposits rise by the week-one amount every week, so the sum after a number of weeks follows the triangular number formula. Small escalating amounts end near $1,378 at one dollar a week, turning spare change into a meaningful reserve by year's end.
52 Week Savings Challenge
Total = starting + week-1 amount x weeks x (weeks + 1) / 2
Total = starting + week-1 amount x weeks x (weeks + 1) / 2 Deposits rise by the week-one amount every week, so the sum after a number of weeks follows the triangular number formula.
Small escalating amounts end near $1,378 at one dollar a week, turning spare change into a meaningful reserve by year's end.
This calculator takes 3 inputs: Week 1 amount, Weeks completed, Starting amount. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.