Daily PPC Budget Calculator

Budgets are where PPC plans meet reality. You decide to spend $3,000 a month on ads, feel good about the round number, and never translate it into what that means per day, per click, per sale. This calculator does that translation so the budget actually connects to your ACOS target.

Type your monthly budget, your target ACOS, your average CPC, and your conversion rate. The tool splits the month into a daily budget, then estimates how many clicks that buys and how many sales those clicks should produce.

The chain

Daily budget is just the monthly number divided by ~30. From there, clicks per day equal the daily budget divided by your CPC. At $100 a day and $0.50 a click, that's 200 clicks. Sales per day are those clicks times your conversion rate — 200 clicks at a 10% conversion rate is 20 orders.

The part people skip: check that the sales this implies match your ACOS target. If your daily budget buys 200 clicks at $0.50 and you convert 10%, your ad spend per day is $100 and your ad-attributed sales are 20 orders × your AOV. Divide spend by those sales and you should land near your target ACOS. If you don't, your CPC or conversion rate is off from what you assumed.

Keep it simple

This is deliberately a back-of-envelope tool, not a forecast. It assumes a steady CPC and conversion rate, which real campaigns never hold — placements shift, bids+ kicks in, competition spikes on weekends. Use it to sanity-check the plan before you set the campaign budget in Seller Central, not as a promise of what next month earns.

One thing it makes obvious: a low conversion rate quietly demands a bigger budget for the same sales. If the clicks-per-sale number looks ugly, the fix is usually the listing or the targeting, not another hundred dollars a day. Spend there first, then come back and re-run the numbers with a better conversion rate.