The 100 Envelope Challenge made simple. Open two random envelopes each week, save the amounts, and watch your savings grow to exactly 5,050.
Start 2026 Challenge →The 100 Envelope Challenge has become a viral savings phenomenon, helping thousands of people worldwide build their savings in a fun, gamified way. Originally done with physical envelopes numbered 1-100, it turns saving money into an exciting game rather than a chore. It's a perfect way to kickstart a new financial habit for the new year!
No need to buy 100 physical envelopes or find a safe place to store them. This website does the envelope selection for you automatically each week. Skip the paper clutter and track your progress online—it's the modern way to take on this classic challenge.
Saving is easier when you're not doing it alone. Share this challenge with friends, family, or coworkers and hold each other accountable. When everyone saves the same envelope amounts each week, you can celebrate milestones together and keep the motivation going strong.
With physical envelopes, cash sits at home earning nothing. By going digital, you can deposit your weekly savings directly into a high-yield savings account and earn interest as you go. Consider opening a dedicated savings account just for this challenge—watch your money grow even faster!
Each week, two random envelope numbers (1-100) are revealed. Each number is the amount you save — no decisions needed!
Save twice per week for 50 weeks. Watch your savings grow and see which envelopes remain as you hit each milestone.
The sum of 1 + 2 + 3 + ... + 100 equals exactly $5,050. Complete 50 weeks and you're guaranteed to hit your goal!
Join the 2026 challenge and transform your savings habits one envelope at a time.
View 2026 Tracker →