Birthday Countdown Timer
How many days until the party? More importantly — are you on track? This countdown timer shows you exactly how much time you have left AND what you should be doing right now. Because "the party's in 3 weeks" hits different when you realize invitations aren't sent yet.
Written by Baljeet Aulakh | Last updated February 2026
Quick Answer
Start planning a birthday party 6-8 weeks in advance. Pick a theme at 8 weeks, send invitations at 6 weeks, order supplies at 4 weeks, and finalize details at 1 week before. Use the free countdown below to track your timeline and get reminders for each planning milestone.
- 6-8 wk
- Start Planning
- 6 wk
- Send Invites
- 4 wk
- Order Supplies
- 1 wk
- Final Prep
When Should You Start Planning a Birthday Party?
A week-by-week guide to party planning. Use the countdown above to track where you are.
Fill Every Week Before the Big Day
Counting down is fun — but knowing what to DO each week is better. A free Party Genius plan includes a week-by-week planning checklist so every countdown milestone has a real task behind it.
Get My Planning TimelineRelated Tools
Get a week-by-week party planning checklist.
❓Theme QuizGet 3 personalized theme recommendations.
💌Invitation MakerCreate beautiful themed birthday invitations.
💰Budget CalculatorEstimate how much your party will cost.
📅Timeline GeneratorBuild a detailed day-of schedule for your party.
🎨Decoration CalculatorCalculate balloons, streamers, and decorations needed.
📦Supply CalculatorCalculate plates, cups, napkins, and all party supplies.
Pro Tip
Use the countdown as your planning schedule: 4 weeks out = book venue/send invites. 3 weeks = order decorations online (cheaper than in-store). 2 weeks = plan menu and buy non-perishables. 1 week = confirm headcount and prep activities. Day before = set up everything possible. Party day = just food prep and fun.